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Best Multiparameter Meters - Buying Guide

Last Updated: 05/21/2019

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Bestselling Multiparameter Meters on Amazon

  1. TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carry...
  2. Apera Instruments PC60 Premium 5-in-1 Waterproof pH/Conductivity/TDS/Salinity/Temp. Multi-Parameter ...
  3. HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester, 0-5000 ppm TDS Range, 1 ppm Res...
  4. 5-in-1 Water Quality Multi-Parameter PH EC CF TDS (ppm) Temperature Test Meter Backlight, Wall-mount...
  5. Extech PH100 ExStik pH Waterproof Meter
  6. pH/EC Conductivity Meter with ATC Water Quality Tester 0.0-14.0pH / 0~19.99ms/cm Aquarium, Hydroponi...
  7. Hanna Instruments Grochek LCD pHep 4 Waterproof PH Temperature Meter | HI98127
  8. Extech EC400 ExStik Waterproof Conductivity, TDS, Salinity, and Temperature Meter
  9. DLAND Digital PH Meter + TDS Tester Aquarium Pool Hydroponic Water Monitor 0-9999 PPM
  10. Lamotte 1749-KIT-01 Tracer Salt PockeTester with Carrying Case, 0-9999 ppm TDS, 32.0 Degree F-149 De...

  #1

TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More (LX-TDS1)

Model: LX-TDS1   |    Mpn: LX-TDS1   |    Ean: 0665059111802   |    PartNumber: LX-TDS1   |   Asin: B079DN9DRS

water meter tds water conductivity meter tds test kit water hardness test kit water quality monitor tds stick tds meter kit nutrient tester tds meter tds water filter TDS monitor teds meter

Features

  • TEST YOUR WATER: How Pure is Your Water? With the push of a button, the TDS water tester can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million)
  • EASY TO USE AND ACCURATE: Just stick it in about 1 inch of water instantly you get the reading. It's compact and doesn't need any maintenance. The TDS water tester is a rugged model that includes a protective carrying case with belt clip
  • AUTO-OFF AND HOLD FUNCTION: The TDS tester shuts off automatically after 2 minutes of non-use to conserve batteries. Features a hold function that saves measurements for convenient reading and recording
  • MEASUREMENT RANGE: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image
  • WHAT YOU GET: Lxuemlu water tester, user manual, our fan-favorite 18-month warranty and friendly customer service
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Brand: Lxuemlu   |   Manufacturer: Lxuemlu

Item Dimensions: 0.6 x 1.1 x 6.3 inches (1.5 x 2.8 x 16.0 cm)   |   Package Dimensions: 1.2 x 1.6 x 6.7 inches (3.0 x 4.1 x 17.0 cm)

Amazon Price: $13.97 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $20.97

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  #2

Apera Instruments PC60 Premium 5-in-1 Waterproof pH/Conductivity/TDS/Salinity/Temp. Multi-Parameter Pocket Tester, Replaceable Probe

Model: AI316   |    Mpn: AI316   |    Ean: 0858718006094   |    PartNumber: AI316   |   Asin: B01ENFOIKA

The Apera Instruments PC60 Multi-parameter Tester simply tests pH, EC, TDS, Salinity &Temperature in an ACCURATE, QUICK & Professional manner for all kinds of regular water solutions such as hydroponics, aquaculture, pools& spas, tap/drinking water, water treatment, cooling towers, etc. The multi-parameter probe is replaceable.

1 to 3 points of Auto Calibration and 0 to 50 C Auto Temperature Compensation (ATC), 0.01 pH, 1% F.S, 0.5 C accuracy with -2.00 to 16.00 pH & 0 to 20.00 mS/cm measuring range, auto recognition and reminders of stable values improves consistency, saving you the trouble of guessing when to manually hold measurement (auto hold function available).

Easy menu setting, customizing your tester s functions according to your needs. Smart self-diagnosis, warning of out-of-range measurement and incorrect calibrations. IP67 waterproof and dustproof, floating on water so you don t have to worry if it falls into water by accident. Up to 2000 hours' continuous operation (without backlit) powered by AAA batteries (with low power warning and auto power off in 8 min if no operation).

Comes with a complete kit of premixed calibration solutions (4.00 and 7.00), soaking solutions (3M KCL), calibration bottles, AAA batteries, and a lanyard all in a portable carrying case.

The meter is CE certified and comes with a 2-YEAR Warranty (6 months for the probe). The company designs and manufactures scientific analytical instruments like meters and sensors for pH, conductivity, turbidity, and dissolved oxygen for over 25 years, and meets ISO 9001:2008 Standards.

NOTES: The instrument will NOT give accurate or stable readings for distilled or deionized water's pH testing (conductivity testing works well in distilled water). This is because distilled and deionized water do not have enough ions present for the electrode to function properly in pH measuring. To measure distilled or deionized water s pH, users need to use a specialized pH electrode. Do NOT store the probe in distilled water or deionized water because they will cause damage to the glass membrane of the pH probe. Only use distilled water for cleaning the pH probe.

Features

  • Simultaneously tests pH/EC/TDS/Salinity/Temp. in a quick,accurate, and reliable manner
  • EASY-TO-INSTALL Replaceable Multi-parameter Probe with EASY measuring mode switch
  • Auto recognition of stable values (with optional AUTO HOLD function) improves consistency so you don't have to guess when to manually hold measurement
  • LARGE CLEAR viewing angle screen with 3 backlit color (indicating 3 different modes), dual display of temp./pH/EC/TDS/Salinity, and indications of completed calibrations and stable readings
  • COMPLETE KIT with READY-TO-USE calibration solutions, calibration bottles, storage solutions, AAA batteries, and a lanyard all in a portable carrying case
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Brand: Apera Instruments, LLC   |   Manufacturer: Shanghai Sanxin Instrumentation

Item Dimensions: 1.6 x 1.6 x 7 inches (4.1 x 4.1 x 17.8 cm)   |   Package Dimensions: 2 x 8.5 x 10 inches (5.1 x 21.6 x 25.4 cm)

Amazon Price: $128.75 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $135.54

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  #3

HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, +/- 2% Readout Accuracy (Magnetic Body)

Model: HMDAP1   |    Mpn: HMDAP1   |    Ean: 0807032971472   |    PartNumber: HMDAP1   |   Asin: B007KDYOMU

Product Description: How Pure is Your Water? A TDS meter (aka ppm pen, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the AP-1 can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million). The lower the TDS level, the purer the water, with 0 ppm being pure H2O. The AP-1 is great for checking your tap water quality, or knowing when to change a filter. (The meter does not test for biological contaminants.) The AP-1 is a great tool for drinking water, water filtration and purification, hydroponics (test your nutrients), colloidal silver, aquariums, RO/DI systems, pools and spas, and more. HM Digital's AquaPro digital water tester has a sleek design that's perfect for today's modern kitchen. The AquaPro digital water testers are the next generation for today's tech-savvy and health-conscience consumer. Temperature Range: 0-80 C; 32-176 F

Features

  • Measures total dissolved solids (TDS) and temperature
  • Automatic Temperature Compensation (ATC)
  • Water-resistant housing
  • Digital Calibration (push button)
  • Magnetic body - store the meter on your fridge when not in use!
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Brand: HM Digital   |   Manufacturer: HM Digital

Item Dimensions: 1.1 x 0.5 x 5.9 inches (2.8 x 1.3 x 15.0 cm)   |   Package Dimensions: 0.55 x 1.57 x 6.3 inches (1.4 x 4.0 x 16.0 cm)

Amazon Price: $24.21 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $24.21

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  #4

5-in-1 Water Quality Multi-Parameter PH EC CF TDS (ppm) Temperature Test Meter Backlight, Wall-mountable Rechargeable Continuous Monitor Tester, Aquariums Hydroponics Pool Fish Tank Pond Drinking

Model: WQM-242   |    Mpn: Model Number   |    Ean: 0600316549158   |    PartNumber: Model Number   |   Asin: B07JJFPWT8

5-in-1 Water Quality Testing Tool PH/ EC/ CF/ TDS/ Temperature Measurement In One Unit. Perfect For Wide Applications Such As Aquariums, Hydroponics, Laboratory, Spas, Swimming Pools And Other Water Systems

Features:

Instant Triple Display Of Results Complete Kit Set With PH Calibration Powder & EC Calibration Solution Switchable C/ F Temperature Unit Automatic Temperature Compensation Clear LCD With Backlight User-friendly And Easy Calibration Specifications:

Measurement Range: EC: 0.00~19.99EC pH: 0.00~14.00pH CF: 0.0~199CF Temp: 0~55 C (32~131 F) TDS: 10~19990ppm Resolution: EC: 0.01EC pH: 0.01pH CF: 0.1CF Temp: 0.1 C (0.2 F) TDS: 10ppm Accuracy: pH: 0.1pH Temp: 1 C( 2 F) EC/CF/TDS: 2%F.S. Automatic Temperature Compensation: 0~50 C (32~122 F) Operating Temperature: 0~50 C (32~122 F) Power Supply: DC6V With Rechargeable Battery Installed Weight: 223gms Set Includes:

1 X 5 In 1 Water Quality Monitor 1 X PH Electrode With BNC Connector 1 X EC Electrode With BNC Connector 1 X 4.01ph Calibration Powder 1 X 6.86ph Calibration Powder 1 X 9.18ph Calibration Powder 1 X EC 12.88 Calibration Solution 1 X EC 1413 Calibration Solution 1 X Metal Hanging Bracket 2 X Mounting Plastic Brackets 1 X Mini Screwdriver 1 X 110V Power Adapter (US Plug) * English User Manual *Please Contact Us If You Need A 220V Power Adapter

Features

  • Measure 5 parameters, continuously monitoring shows readings on its large-screen triple display with backlight. Powered by its rechargeable battery (installed in the main unit) or the power adapter included which supports a long period of monitoring.
  • Measurement Range: EC: 0.00~19.99EC; pH: 0.00~14.00pH; CF: 0.0~199CF; Temp: 0~55 C (32~131 F); TDS: 10~19990ppm
  • Proven high accuracy and Auto Temperature compensation (ATC), comes with removable BNC electrode
  • pH calibration powders and EC calibration solution are included in the set. Calibrates easily and offer safer and precise measurement
  • Best in aquariums, hydroponics, laboratory, spas, swimming pools and other water systems
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Brand: Gain Express   |   Manufacturer: Gain Express Holdings Ltd

Amazon Price: $76.90 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 1-2 business days
List Price: $76.90

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  #5

Extech PH100 ExStik pH Waterproof Meter

Model: PH100   |    Mpn: PH100   |    Ean: 5053184545480   |    PartNumber: PH100   |   Asin: B00023RYQ8

Exstick Ph Meter, Ph Range 0. 00 To 14. 00, Waterproof Yes, Automatic Temperature Compensation Yes, Displayed Temperature Range 23 To 194 Degrees F, -5 To 90 Degrees C, Operating Temp. Range (F) 23 To 194 Degrees , Operating Temp. Range (C) -5 To 90 Degrees , Display Dual Line Lcd, Auto Power Off Yes, Memory Stores 15 Labeled Readings, Temperature Compensation Range Yes, Calibration 1, 2 Or 3 Pt. , Includes Built-In Smart Chip Predicts Ph Electrode Performance With Renew Indicator

Features

  • Flat surface pH electrode is waterproof and rugged enough to withstand harsh environments
  • LCD display shows pH from 0.00 to 14.00, temperature and bargraph of trends in acidity or alkalinity; device stores and recalls up to 15 labeled readings
  • RENEW feature tells you when it and' time to replace your pH electrode
  • CAL feature tells you when it and time to recalibrate your meter
  • Includes meter, protective sensor cap, sample cup, 4 SR44 button batteries and 1 48-Inch (1.2m) neck strap
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Brand: Extech   |   Manufacturer: Extech Instruments

Item Dimensions: 1.4 x 1.6 x 6.8 inches (3.6 x 4.1 x 17.3 cm)   |   Package Dimensions: 2.2 x 2.9 x 9.3 inches (5.6 x 7.4 x 23.6 cm)

Amazon Price: $71.99 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $99.99

Warranty: 1 year (meter only)

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  #6

pH/EC Conductivity Meter with ATC Water Quality Tester 0.0-14.0pH / 0~19.99ms/cm Aquarium, Hydroponics Tool

Model: KIB-231   |    Mpn: KIB-231   |    Ean: 0619317586482   |    PartNumber: KIB-231   |   Asin: B07KQ3X5PR

FEATURES:

2-in-1 pH & conductivity water quality tester With backlight function User friendly and simple calibration With Self-Locking function Water-resistant design Replaceable pH probe included With ATC Can be mounted on wall or hung Compact and easy to use Application: Ideal for agricultural, horticultural, hydroponics applications and even to other water quality procedure

SPECIFICATIONS:

Range: 0.00~14.00pH / 0~19.99mS/cm Resolution: 0.01pH / 0.01mS/cm Accuracy: 0.1pH / 2%F S Temperature Compensation: 0~50 C Power Supply: 6V DC (included) Operating Environment: 0~50 C Size: 88 x 55 x 22 mm Weight: 135g

SET INCLUDES:

1 x pH & EC Water Quality Meter 1 x EC Conductivity Electrode 1 x pH Electrode 3 x Calibration Solution (4.003pH / 6.864pH / EC 12.88 ) 2 x Hanging Bracket 1 x Metal Wire Holder 2 x Belcro Tape 1 x Mini Screwdriver 1 x Power Adaptor

Features

  • 2-in-1 Meter pH and EC Conductivity water quality tester with measurement range 0.00~14.00pH / 0~19.99mS/cm
  • Application: Ideal for agricultural, horticultural, hydroponics applications and even to other water quality procedure
  • With ATC, compact and easy to use, can be mounted on wall or hung and comes with replaceable pH electrode
  • Comes with Calibration Solutions (4.003pH / 6.864pH / EC 12.88)
  • Size: 88 x 55 x 22 mm / Weight: 135g / 6V DC Power Supply
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Brand: DANOPLUS   |   Manufacturer: DANOPLUS

Package Dimensions: 2.24 x 7.68 x 7.83 inches (5.7 x 19.5 x 19.9 cm)

Amazon Price: $39.99 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $39.99

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  #7

Hanna Instruments Grochek LCD pHep 4 Waterproof PH Temperature Meter | HI98127

 Ean: 2050002771031   |    PartNumber: FBA_HI-98127   |   Asin: B000CNKWNK

Hanna Instruments PH Tester. Made in Romania.

Features

  • pH Tester
  • Waterproof
  • pH -2.0 to 16.0 with +- 0.1 pH Accuracy
  • Automatic Shutoff and Temperature Compensation
  • Automatic Calibration
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Brand: Hanna Instruments   |   Manufacturer: Hanna Instruments

Item Dimensions: 1.5 x 3.2 x 8.5 inches (3.8 x 8.1 x 21.6 cm)   |   Package Dimensions: 1.3 x 2.7 x 8.2 inches (3.3 x 6.9 x 20.8 cm)

Amazon Price: $97.99 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $119.34

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  #8

Extech EC400 ExStik Waterproof Conductivity, TDS, Salinity, and Temperature Meter

Model: EC400   |    Mpn: EC400   |    Ean: 0793950054000   |    PartNumber: EC400   |   Asin: B00023RXFK

Extech EC400 ExStik Conductivity/TDS/Salinity Meter; Large 3-1/2 digit (2000 count) Digital Display; Simultaneous display of Conductivity, TDS, or Salinity Plus Temperature

The Extech EC400 ExStik features six units of measure, internal memory that stores up to 15 labeled readings for easy recall, adjustable conductivity to TDS ratio factor from 0.4 to 1.0, and self-calibration upon power up. The EC400 incorporates the latest microprocessor chip technology and patented sensor technology to enable the simultaneous measurement of conductivity, TDS, salinity, and temperature. With the touch of a button the EC400 allows you the flexibility of interchangeable cell constants and has made the job of testing fast, accurate, and repeatable.

Key Features Units of measure include S/cm, mS/cm, ppm, ppt, mg/L, and g/L Adjustable Conductivity to TDS ratio factor from 0.4 to 1.0 - conveniently calculates the TDS value Large 3-1/2 digit (2000 count) Digital display with analog bargraph to indicate sample trends Data Hold, Auto Power Off and low battery indication Automatic Temperature Compensation of 2% per C Simultaneous display of Conductivity, TDS, or Salinity plus Temperature Internal memory stores up to 25 labeled readings for easy recall Self calibration of electronics on power up Order Conductivity standards separately Specifications Conductivity: 0 to 199.9 S, 200 to 1999 S, 2.00 to 19.99mS TDS/Salinity/Fluoride: TDS/Salinity: 0 to 99.9ppm (mg/L), 100 to 999ppm (mg/L), 1.00 to 9.99ppt (g/L) Temperature: 32 to 149 F (0 to 65 C) Max. Resolution: 0.1 S, 0.1ppm (mg/L), 0.01pH, 0.1 F/ C Basic Accuracy: 2%FS, 0.01pH, 1.8 F/1 C Dimensions: 1.4"x6.8"x1.6" (35.6x172.7x40.6mm) Weight: 3.8oz (110g)

Features

  • 6 selectable units of measurement--mS, mS, ppm, ppt, mg/L and g/L
  • Automatic temperature compensation
  • Automatic self calibration
  • Stores/recalls up to 15 labeled readings
  • Adjustable conductivity to TDS ratio factor from 0.4 to 1.0
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Brand: Extech   |   Manufacturer: Extech Instruments

Item Dimensions: 1.4 x 1.6 x 6.8 inches (3.6 x 4.1 x 17.3 cm)   |   Package Dimensions: 2.2 x 4 x 9.1 inches (5.6 x 10.2 x 23.1 cm)

Amazon Price: $85.77 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $104.99

Warranty: 1 year (meter only)

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  #9

DLAND Digital PH Meter + TDS Tester Aquarium Pool Hydroponic Water Monitor 0-9999 PPM

Model: PH Meter   |    Mpn: PH Meter   |    Ean: 0043968799517   |    PartNumber: PH Meter   |   Asin: B00ZUBIHJK

Description:

1,This digital pen style PH meter is an ideal instrument for any aquarium, the fishing industry, swimming pools, school laboratories, food & beverage, etc. And, this Digital TDS Water Quality Tester is ideal for all basic water testing applications.
2,This product is highly efficient and accurate due to its advanced microprocessor technology.
3,Hold Function: stores measurements for convenient reading and recording.
4,Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. Measurement Ranges is between 0-9990 ppm, and from 0-999 ppm, the resolution is in increments of 1ppm; from 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image.
5,Applied range: the production and drinking of purified water, Electroplating liquid, Boiler water, Water in fish tank, Water of swimming pools, Photograph flushing fluid, Well water, Deep phreatic water, Laboratory, Aquaculture, Food processing, etc.
What is included:

1 x PH meter
1 x Calibration Screwdriver
1 x PH meter English Manual
1 x Case
1 x TDS Meter
1 x TDS Meter English Manual
1 x Bag for TDS Meter

Features

  • With compact portable design;Size: (pH Tester) 14.2 x 2.7x 1.5 cm; Size:(TDS) 14.5 x 2.6 x 2.0 cm
  • This digital pen style pH meter is an ideal instrument for whatever you may need to test the pH levels.
  • Working temperature:0 - 50 ,Power source: 2 x 1.5 V (button cell),Zero: Adjust by the compensate potentiometer
  • Measuring pH Range: 0.0 - 14.0 PH; Resolution: 0.1 PH; Accuracy: in 0.1 pH (at 20 )
  • Typical EMC DEV: 0.2 PH
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Brand: DLAND   |   Manufacturer: DLAND

Package Dimensions: 1.26 x 5.51 x 7.28 inches (3.2 x 14.0 x 18.5 cm)

Amazon Price: $13.81 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 1-2 business days
List Price: $13.81

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  #10

Lamotte 1749-KIT-01 Tracer Salt PockeTester with Carrying Case, 0-9999 ppm TDS, 32.0 Degree F-149 Dergree F Temperature

Model: 1749-KIT-01   |    Mpn: 1749-KIT-01   |    Ean: 0637395461668   |    PartNumber: 1749-KIT-01   |   Asin: B00P8EKGRK

Designed for the pool professional. The tester's probe is dipped into a sample of pool water and the results are ready instantly. The Salt PockeTester measures the Sodium Chloride level in salt water pools with a range from 0 to 9,999 ppm. TDS is measured from 0 to 9,999 ppm and Temperature from 32.0 to 149 F. A memory feature saves up to 25 test results. The PockeTester is packages in a rugged carrying case with a special calibration standard.

Features

  • Salt, TDS, Temperature TRACER PockeTester with Carrying Case
  • Designed for the pool professional
  • The Salt PockeTester measures the Sodium Chloride level in salt water pools with a range from 0 to 9,999 ppm
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Brand: LaMotte   |   Manufacturer: Lamotte

Package Dimensions: 5.9 x 8 x 8.5 inches (15.0 x 20.3 x 21.6 cm)

Amazon Price: $166.10 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 3-4 business days
List Price: $166.10

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  #11

Hanna Instruments HI 9813-6N Waterproof pH/EC/TDS Temperature Meter Clean and Calibration Check for Growers, 0 to 50 Degree C, 9V Battery

Model: HI9813-6N   |    Mpn: HI 9813-6N   |    PartNumber: HI 9813-6N   |   Asin: B003L77LKG

The HI 9813-6N waterproof multiparameter meter measures pH, electroconductivity (EC), and total dissolved solids (TDS), making it suitable for designed specifically for agricultural applications such as hydroponics, greenhouses, farming and nurseries. The HI 9813-6N comes with a HI 1285-6 combination probe with DIN connector and 1 m/3.3 ft. cable, a starter set of calibration and cleaning solution sachets, a check solution sachet, a 9V battery and instructions. The attached HI 1285-6 polyprolylene probe features a fiber junction and gel electrolyte.

The meter has a calibration check function (Cal-Check) to validate instrument performance and an LCD screen. If the meter is calibrated, a message will indicate Probe is OK, but if the meter needs cleaning the device will direct the user to Clean Probe and Calibrate.

The HI 9813-6N tester functions in temperatures of 0.0 to 60.0 degrees C, and has a range of pH 0.0 to 14.0 (+ or - 0.1 pH) with a resolution of 0.1 pH. For EC, the device has a range of 0.00 to 4.00 mS/cm (+ or - 2% F.S. mS/cm) and a resolution of 0.01 mS/cm. For TDS, the device has a range of 0 to 1999 ppm (mg/L) (+ or - 2% F.S. ppm) and a resolution of 1 ppm (mg/L). Dimensions are 144.6 x 79.5 x 37 mm/5.7 x 3.1 x 1.5 inches (H x W x D) with a weight of 230 g (8.1 oz.). (H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.)

pH meters and testers measure the acidity or alkalinity of a substance and are commonly used by researchers, manufacturers, and hobbyists in aquaculture, agricultural, wine-making and water-testing and for scientific applications.

Hanna Instruments manufactures analytical instrumentation and supplies, including pH meters, electrodes, chemical reagents, and buffer solutions. The company, founded in 1978 and headquartered in Woonsocket, RI, meets International Organization for Standardization (ISO) 9001 standards.

What s in the Box? HI 9813-6N meter HI 1285-6 combination probe with DIN connector and 1 m/3.3 ft cable HI 70007 pH 7.01 calibration solution (20 mL) HI 70442 1500 ppm (mg/L) calibration solution (20 mL) HI 70031 1413 S/cm calibration solution (20 mL) Two HI 700521 cleaning solution sachets (20 mL) Carrying case (1) 9V battery Instructions

Features

  • Starter set with portable, water-resistant meter for testing pH, electroconductivity, and total dissolved solids, provided with solutions and sachets
  • Calibration check function to validate instrument performance
  • Automatic temperature compensation (ATC) to eliminate the need for extra calculations
  • Alert system when low battery and potential measurement error
  • On-screen user and calibration guides
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Brand: Hanna Instruments   |   Manufacturer: Hanna Instruments

Item Dimensions: 3.7 x 11.6 x 9.4 inches (9.4 x 29.5 x 23.9 cm)   |   Package Dimensions: 6 x 11.1 x 13.2 inches (15.2 x 28.2 x 33.5 cm)

Amazon Price: $224.80 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 1-2 business days
List Price: $199.00

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  #12

UEi Test Instruments DTH35 Digital Psychrometer

Model: DTH35   |    Mpn: DTH35   |    Ean: 5915903829069   |    PartNumber: DTH35   |   Asin: B00M0EU6H6

The DTH35 Digital Psychrometer measures temperature, relative humidity and calculates wet bulb, dew point and enthalpy of moist air (air with humidity). The housing design is useful for in-duct measurement, as well as ambient or vent outlet applications.

From the Manufacturer

UEi Test Instruments has over 50 years experience designing and manufacturing a broad range of award-winning, industry-leading Test and Measurement Tools. Professionals recognize the UEi brand for quality and innovative features designed to solve real-world problems. UEi backs its products with dedicated technical support, service and repair teams.

Features

  • Triple Display
  • 32Degree to 122DegreeF (0Degree to 50DegreeC)
  • 0 to 100% RH
  • -69Degree to 122DegreeF (-21.6Degree to 49.9DegreeC) Wet Bulb Range; -90.4Degree to 122DegreeF (-68Degree to 49.9DegreeC) Dew Point Range
  • Min/Max/reset Data Hold Auto Power Off
  • Measures: Temperature, Relative Humidity
  • Calculates: Wet Bulb, Dew Point, Enthalpy
  • Min/Max, Data Hold, Large Backlit Display, Magnetic mount, Probe cover used as an extension
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Brand: UEi Test Instruments   |   Manufacturer: UEi Test Instruments

Item Dimensions: 9.37 x 1.7 x 0.72 inches (23.8 x 4.3 x 1.8 cm)   |   Package Dimensions: 0.87 x 7.8 x 11.89 inches (2.2 x 19.8 x 30.2 cm)

Amazon Price: $76.96 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $94.92

Warranty: 1-Year limited warranty

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  #13

Gain Express 3-in-1 ORP PH Temperature Combo Meter Tester, Pen Type ATC -1999~1999mV 0.00-14.00pH 0~50 C, Water Quality Aquarium, Tank, Swimming Pool, Lab, Spa

Model: PHM-224   |    Mpn: PHM-224   |    Ean: 0600316548281   |    PartNumber: PHM-224   |   Asin: B07CZ8V9JJ

A waterproof meter designed to simultaneously measure pH and ORP in one go. It also reads temperature, which is continuously displayed on the dual level LCD. All pH readings are automatically temperature compensated (ATC). Measurements are highly accurate with a unique stability indicator right on the LCD. Comes with a removable electrode which can be replaced easily by the user. The housing has been completely sealed against humidity and designed to float.

FEATURES:

* Conforms with IP55 standard * Included calibration (buffer) solution , pH4.003, 6.864, 9.182 * Waterproof and it floats! * With Automatic Temperature Compensation



SPECIFICATIONS:

Range: 0~14.00pH ; -1999~1999mV ; -50~70 C Resolution: 0.01pH ; 1mV ; 0.1 C Accuracy: 0.1 pH ; 5mV ; 1 C ATC: 0~50 C Operating Environment: 0~50 C Power Supply: 4 x 1.5V AG13 button battery Size: 17 x 2.4 x 4cm Weight: 85g (no battery)



SET INCLUDES: 1 X PH ORP Meter 1 x 6.864 pH calibration solution 1 x 9.182 pH calibration solution 1 x 4.003 pH calibration (buffer) solution 1 x Mini Screw Driver User Manual Sturdy Carrying Case

Features

  • Range: 0~14.00pH ; -1999~1999mV ; -50~70 C / Resolution: 0.01pH ; 1mV ; 0.1 C / Accuracy: 0.1 pH ; 5mV ; 1 C
  • Waterproof meter designed to simultaneously measure pH, ORP & temperature in one go
  • Comes with ATC, measurements are highly accurate with a unique stability indicator right on the LCD
  • Comes with a removable electrode which can be replaced easily by the user
  • Completely sealed against humidity and designed to float on water. Include pH4.03, pH6.86, pH9.18 calibration solution
  • See more on Amazon...

Brand: Gain Express   |   Manufacturer: Gain Express Holdings Ltd

Package Dimensions: 1.73 x 3.78 x 7.8 inches (4.4 x 9.6 x 19.8 cm)

Amazon Price: $52.90 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $52.90

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  #14

Hach 9531600 Pocket Pro Salinity Tester

Model: 9531600   |    Mpn: 9531600   |    PartNumber: 9531600   |   Asin: B00R3EIODG

Hach pocket Pro and Pro+ deliver accurate results with built in Diagnostics, replaceable batteries, and a large, easy-to-read LCD screen.

Features

Brand: Hach Company   |   Manufacturer: Hach Company US

Package Dimensions: 2.3 x 4.7 x 8.7 inches (5.8 x 11.9 x 22.1 cm)

First Available: 2018-02-21

Amazon Price: $92.50 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $92.50

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  #15

Milwaukee MW102 Digital pH / Temperature meter w/ ATC

 Ean: 0730792962605   |    PartNumber: MW 102   |   Asin: B016N2G8F4

Milwaukee MW 102 a microprocessor based pH / Temperature meter with an extended range (-2.00 to 16.00 pH). It features Automatic Temperature Compensation, automatic calibration in 2 points and 0.02 pH accuracy.

Features

  • Double junction electrode with 1 meter cable
  • Range 2 to 16 pH - Resolution 0.01 pH - Automatic Calibration
  • Temperature Range -5 to 70C Resolution 0.1C
  • Easier & Faster To Calibrate
  • Longer 9V Battery Life
  • See more on Amazon...

Brand: Milwaukee   |   Manufacturer: Milwaukee

Item Dimensions: 1.6 x 3.1 x 5.7 inches (4.1 x 7.9 x 14.5 cm)   |   

Amazon Price: $118.00 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 1-2 business days
List Price: $129.99

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  #16

AUTOUTLET TDS Meter Digital Water Quality Tester Professional TDS EC & Temperature Meter (3-in-1) 0-9999 ppm Tester Pen for Drinking Water, Aquariums, Hydroponics, Pools, Spa

Model: AUTOUTLET   |    Mpn: AUTOUTLET   |    Ean: 0711583484544   |    PartNumber: AUTOUTLET   |   Asin: B07CTMC298

Feature:
Digital TDS Meter Tester - To Test the Filter Water Quality Purity, to Check the Performance of Your Water Filter, to Check for Hardness (1grain=17ppm),to Make Sure You Always Drink Pure Water
Shift between TDS and Conductivity - Hold Button Saves Measurements for Convenient Reading and Recording New Arrival
Wide Measurement Range - EC: 0-9990us/cm. TDS: 0-9990ppm. Dearees Celsius: 0.1-80.0 Celsius. Fahrenheit: 32.0-176.0 Accuracy: 2%
Auto-off Function - Turns off Meter after 5 Minutes of Non-use to Conserve Batteries Automatic Temperature Compensation
Multifunctional - Can be Used in Water Ppurifiers and Filters, Instantly Check on the Overall Quality of the Water You and Your Family Drink.
Specifications:
1.Measurement range:
EC: 0-9990us/cm. TDS: 0-9990ppm. Dearees Celsius: 0.1-80.0 Celsius.Fahrenheut: 32.0-176.0 Accuracy: 2%
2.Size: 154mm*30mm*14mm
3.Color: White How to use it:
1.Please unplug the electrode sleeve before use.
2.Press the switch ,place the electrode into the testsolution.
3.After the numerically stable ,press the HOLD button and take it out of the solution to read.
4.After reading,turn off the meter,wipe clean the electrode before sleeving it. Package include:
1 X Water Quality Tester
1 X User Manual
1 X Free Leather Bag

Features

  • Digital TDS Meter Tester To Test the Filter Water Quality Purity, to Check the Performance of Your Water Filter, to Check for Hardness (1grain=17ppm),to Make Sure You Always Drink Pure Water
  • Shift between TDS and Conductivity Hold Button Saves Measurements for Convenient Reading and Recording New Arrival
  • Wide Measurement Range EC: 0-9990us/cm. TDS: 0-9990ppm. Dearees Celsius: 0.1-80.0 Celsius. Fahrenheit: 32.0-176.0 Accuracy: 2%
  • Auto-off Function Turns off Meter after 5 Minutes of Non-use to Conserve Batteries Automatic Temperature Compensation
  • Multifunctional Can be Used in Water Ppurifiers and Filters, Instantly Check on the Overall Quality of the Water You and Your Family Drink.
  • See more on Amazon...

Brand: AUTOUTLET   |   Manufacturer: AUTOUTLET

Item Dimensions: 4.8 x 7.6 x 0.79 inches (12.2 x 19.3 x 2.0 cm)   |   Package Dimensions: 0.8 x 4.8 x 7.6 inches (2.0 x 12.2 x 19.3 cm)

Amazon Price: $8.95 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $8.95

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  #17

Water Quality Tester, KKmoon Mini Water Quality Tester Professional 2 in 1 Multi-Parameter Water Quality Monitor Online pH/EC Meter Acidometer Water Quality Analysis Device

 Ean: 0798881592430   |    PartNumber: GSY3034608234944SB   |   Asin: B077GTS63J

The 2 in 1 water quality monitor is professional and useful tool for testing pH / EC of solution level. Perfect for wide applications, such as beverage, fish hatcheries, food processing, aquarium, photography, laboratory, quality control, school & colleges, swimming pools, water conditions.
Features:
Separate pH and EC electrode, precise measurement. Can online monitor for a long time. Apply in water sources, aquarium, hydroponics, spas, swimming pools and other water systems. Automatic temperature compensation. Use to measure the pH / EC of solution. Easy calibration of pH and EC with just a mini-screwdriver. Large and clear LCD with backlight, easy to read and accurately measuring functions.
Specifications:
Range: pH: 0.00 14.00pH EC: 0.00 19.99ms/cm Resolution: pH: 0.01pH EC: 0.01 ms/cm Accuracy: pH: 0.1pH EC: 2%F.S Temperature Compensation: 0 50 (32 122 ) Working temperature: 0 50 (32 122 ) Length of EC/pH Electrode Line: Approx. 118cm / 46.5in Power supply: DC 6V (Power-supply Adaptor) Plug Type: US Battery: 4 1.5V AG-13 Button Cell Batteries (NOT Included) Color: Blue Material: ABS Item Body Size: Approx. 75 * 55 * 28mm / 2.9 * 2.2 * 1.1in (Excluding the EC Electrode) Item Weight: Approx. 96.3g / 3.4oz Package Size: Approx. 21 * 10.4 * 5cm / 8.3 * 4.1 * 2.0in Package Weight: Approx. 337.2g / 11.9oz
Package List:
1 * pH / EC Meter with EC Electrode 1 * User Manual 1 * pH Electrode 1 * AC-DC Adapter 2 * Suction Cups 1 * Bracket 1 * Mini Screwdriver

Features

  • PH&EC ELECTRODE Separate pH and EC electrode, precise measurement.Can online monitor for a long time.
  • APPLICATION Apply in water sources, aquarium, hydroponics, spas, swimming pools and other water systems.
  • PH&EC MONITOR Automatic temperature compensation.Use to measure the pH / EC of solution.
  • EASY CALIBRATION Easy calibration of pH and EC with just a mini-screwdriver.
  • LCD DISPLAY Large and clear LCD with backlight, easy to read and accurately measuring functions.
  • See more on Amazon...

Brand: KKmoon   |   Manufacturer: KKmoon

Package Dimensions: 2.05 x 4.72 x 9.02 inches (5.2 x 12.0 x 22.9 cm)

Amazon Price: $38.99 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $38.99

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  #18

Hanna Instruments HI 98121 Combination pH/ORP/Temperature Tester

Model: HI98121   |    Mpn: HI 98121   |    Ean: 0000099908805   |    PartNumber: HI 98121   |   Asin: B002NX0VWO

The HI 98121 pH/ORP/Temperature Tester is a waterproof combination pocket pH, Oxidation Reduction Potential (ORP), and temperature tester with a replaceable electrode and a non-clogging, replenishable fiber junction.

The meter features a large LCD screen for readability, an ergonomically designed waterproof casing, and automatic temperature compensation to eliminate the need for additional calculations. It has a replaceable electrode and renewable reference junction, which helps prolong the life of the tester.

The HI 98121 tester functions in temperatures of -5.0 to 60.0 degrees C/23.0 to 140.0 degrees F (+ or - 0.1 degrees C / 0.1 degrees F), and has a range of -2.00 to 16.00 pH (+ or - 0.05) with a resolution of 0.01 pH. The meter can be calibrated at one or two points for pH with auto-buffer recognition, and against five memorized buffer values. For ORP (Oxidation Reduction Potential) readings, the tester has a range of + or - 1000mV (+ or - 2) with a resolution of 1mV and automatic factory set calibration. Dimensions are 163 x 40 x 26 mm (6.4 x 1.6 x 1.0"), with weight 100 g (3.5 oz.).

pH testers measure the acidity or alkalinity of a substance and are commonly used by researchers, manufacturers, and hobbyists.

Hanna Instruments manufactures a wide variety of analytical instrumentation, including pH meters, multi-parameter meters, electrodes, chemical reagents, and buffer solutions. Founded in 1978, Hanna is headquartered in Woonsocket, RI, with subsidiaries in 32 countries. Hanna Instruments holds many firsts in the field of analytical instrumentation, including a pH electrode with a built-in temperature sensor, an electronic pocket-sized pH tester, and a replaceable electrode pH pocket tester. To ensure the quality of its products, Hanna is a vertically integrated manufacturer and does not subcontract any part of its manufacturing.

What s in the Box?

Protective cap Calibration screwdriver Four 1.5V batteries Instructions

Features

  • One- or two-point manual pH calibration for obtaining results across a wide range
  • Non-clogging fiber junction and replaceable electrode to prolong life of meter
  • Automatic Temperature Compensation (ATC) eliminates need for extra calculations
  • Waterproof and floats if dropped in water
  • Large LCD screen for readability
  • See more on Amazon...

Brand: Hanna Instruments   |   Manufacturer: Hanna Instruments

Item Dimensions: 1.2 x 2.6 x 8.3 inches (3.0 x 6.6 x 21.1 cm)   |   Package Dimensions: 1.5 x 2.7 x 8.4 inches (3.8 x 6.9 x 21.3 cm)

Amazon Price: $184.69 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $118.75

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  #19

AMTAST Waterproof pH/ORP/Conductivity/TDS/Salt/Temp Tester ORP Probe Meter (with ORP Probe)

 Ean: 0792855829140   |    PartNumber: AMTAST   |   Asin: B07HR8B53Q

PH:

Range: -2~16.00

Accuracy: +-0.01+1 digit

Resolution: 0.01 pH

ATC: 0~90

Calibration: 4.00, 7.00, 10.01



ORP:

Range: -1000~1000

Accuracy: +-2+1 digit

Resolution: 1mV



Temp.:

Range: 0~90

Accuracy: +-2 +1digit

Resolution: 0.1



Conductivity:

Range: 0~2000uS, 2.00~20.00mS

Accuracy: +-2% FS (Cond.)

Resolution: 1 Us/0.01 mS



TDS:

Range: 0~1300ppm, 1.30~13.00ppt

Accuracy: +-2% FS (TDS)

Resolution: 1 ppm/0.01 ppt



Salinity:

Range: 0~1000ppm, 1.00~12.00ppt

Accuracy: +-2% FS (Salt)

Resolution: 1 ppm/0.01 ppt



Conductivity/ TDS/ Salinity:

ATC: 0~50

Calibration: 0 uS, 1413 uS, 12.88 mS



Power: 4 x AAA battery (1.5V)

Features

  • LARGE LCD DISPLAY: pH, ORP, Conductivity, TDS, Salinity and Temperature simultaneously. Displays Maximum/Minimum value and data hold
  • Automatic Temperature Compensation (ATC) and degree / switchable
  • Waterproof IP-57 standard and rugged design for field use conveniently. It can float on water
  • Low battery and consumption indicator. Auto shut off after 10 minutes of non use
  • APPLICATION: Wide range of performing multifunctional testing on pH, ORP(mV), Conductivity(us), TDS(ppm), Salinity(ppm) and Temperature with a replaceable electrode. Note: This meter has ORP(mV) testing function.
  • See more on Amazon...

Brand: AMTAST   |   Manufacturer: AMTAST

Package Dimensions: 2.24 x 8.74 x 9.41 inches (5.7 x 22.2 x 23.9 cm)

Amazon Price: $155.99 | as of 05/21/2019(4:03am pst)
Availibility: Usually ships in 24 hours
List Price: $155.99

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