Best Myron L in 2026

LSI/Hardness Calculator

Auto ranging

Adjustable Temperature Compensation

Measure Conductivity, pH, ORP, FCE, Resistivity and Temperature

DS Conductivity Meter: 0-5000 µM/µS

Automatically temperature compensated from 50° to 160°F (10° to 71°C)

Power One 9 volt battery supplied; Battery Life: >2000 tests/1 year

TDS 0-10,000 parts per million (PPM)

Temperature Automatic (to 25°C/77ºF) for conductivity Compensation samples between 10-71°C/50-160°F

Power One 9 volt battery supplied; Battery Life: >2000 tests/1 year

Product Type: multiparameter meter

Meter style: portable

Range (pH): 0.00 to 14.00

Its Ideal for Commercial Use

Its Includes a Carrying Case with Belt Clip

Hold Function: Saves Measurements for Convenient Reading and Recording

✅ OUR SIMPLEST, FASTEST TDS METER YET - Just dip in the meter, stir, and get your results in seconds. No calibration or setup needed, you can use it straight out of the box. Follow the step-by-step instructions then check the easy-to-read screen.

✅ UPGRADED ACCURACY THAT LASTS - With the titanium alloy probe and the latest sensors, you can get almost exact readings every time. What’s more, the meter can be easily recalibrated for extended precision whenever needed.

✅ SUITABLE FOR ANY TYPE OF TDS OR EC TESTING - Check the TDS or EC of your aquarium, pool, or any water source. You can determine the effectiveness of your RO, DI, or distillation unit, check the nutrient levels of your hydroponic setup, and more.

Measures pH/EC/TDS (ppm)/Salinity/Temp. in a quick and professional manner

Replaceable multi-parameter probe with easy installation

When the smiley face icon stays on screen, it's the right time to record the measurements.

APERA's unique BPB (Brush-resistant Platinum Black) probe ensures high accuracy and consistency in a wide-range conductivity measurement

EASY Auto Calibration with auto buffer recognition; Auto Temp. Compensation (ATC) ensures accuracy in variant temperatures (0-50.0˚C)

LARGE CLEAR LCD with DUAL Display of temp./ppt, and REMINDERS of completed calibrations and stable readings

APERA's unique Replaceable Platinum Black sensor ensures high accuracy and consistency in a wide-range conductivity measurement

EASY Auto. Calibration with auto buffer recognition; Auto Temp. Compensation (ATC) ensures accuracy in variant temperatures (0-50. 0˚C)

LARGE LCD with 3 backlit color (indicating 3 different modes), DUAL Display of temp. /EC, and indications of completed calibrations and stable readings

✅【TEST YOUR WATER PURITY】: With our handy TDS water meters can test how pure is your water? Just stick it in about 1 inch deep of water, then TDS water tester can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million).

✅【 4 IN 1 MODEL FUNCTION】: Our advanced 3 in 1 ppm meter conductivity pen professional in TDS, EC and Temperature testing, 4 in 1 model for your free choice. And upgraded with big backlit LCD for easy reading, easily use with auto lock function.

✅【 ACCURATE AND WIDE MEASUREMENT RANGE】: Equipped with premium quality titanium alloy probe to achieve high accuracy, and reliable Automatic Temperature Compensation (ATC) ensures reading always be accurate at various temperatures. Testing range from 1000 to 9990 ppm, the resolution is in increments of 10 ppm, indicated by a blinking 'x10' image.

The EC-3 is ideal for all water purification applications, waste water regulation, aquaculture, hydroponics, and colloidal silver

The Handheld Conductivity Tester is ideal for consumer as well as commercial use

The Conductivity Tester is highly efficient and accurate due to its advanced microprocessor technology

6 PARAMETER in one Meter: pH / Conductivity / ORP / Temperature (°C, °F) / TDS (Total Dissolved Solids) and Salinity. Multi Parameter pentype water quality tester with large, easy to read and clear LCD.

APPLICATION: an ideal tool for all water quality testing like Agriculture, Anti-freeze Recycling, Aquarium, Boiler, Chemical Industry, Cooling tower, Drinking Water, Fish Farming, Food industry, Garden husbandry, Hydroponic, Laboratory usage, Plating industry, Swimming pool & Spa, Water Treatment, etc.

MEASUREMENT RANGES:  pH -2~16pH; Temperature 0~90°C (32~194°F); Conductivity 0~2000μs / 2.00~20.00mS;  TDS 0~1300ppm / 1.30~13.00ppt; ORP -1000~1000mV; Salinity 0~1000ppm / 1.00~12.00ppt

Electrical Conductivity tester that reads in Millisiemens (mS) ATC Built-in digital thermometer

Ideal For Commercial Use, Includes A Carrying Case With Belt Clip

Hold Function: Saves Measurements For Convenient Reading And Recording

LSI/Hardness Calculator

Auto ranging

Adjustable Temperature Compensation

Designed for lab-grade measurement of up to 8 water quality parameters in the field, including pH, ORP, DO, conductivity, TDS, salinity, resistivity, and temperature

Intelligent functions –– auto. calibration, auto. temperature compensation, self-diagnosis, data logging, auto. power off, and more.

4 quality probes included in the kit (pH, conductivity, DO, ORP) for field test at lab-grade accuracy

Measure Conductivity, pH, ORP, FCE, Resistivity and Temperature

Test, measure and control (doser) pH and nutrients (tds) in solution to make precise up and down adjustments with lab quality probes for use in hydroponic system and grows with reservoirs; multi-part nutrient dosing with Peripods

EASY two point calibration for pH sensor, and auto temperature compensation, with backlit LCD display and calibration reminders; EC probe is factory calibrated; Data logging with Bluelab Connect software (Connect stick sold separately)

24/7 meter for your nutrient and ph level to maximize your grow and ensure plants get the balanced feed they need; high and low alarm when outside parameters; tester parameters can be viewed on mobile phone

Comes with an all-in-one ATC pH electrode, measuring pH in a quick and reliable manner

The high quality platinum black conductivity electrode generates accurate EC readings in a wide measuring range (0 to 200 mS/cm)

Quick and easy multi-points Auto calibration with calibration guide and self-diagnosis

Range: K 0.1 - 0.5 µs/cm to 50,000 µs/cm

Cable Length 1 Meter

Response Time: 90% in 1s

Kit Includes: 1 EZO-EC Embedded Circuit

1 Conductivity Probe K 0.1 Range: 0.07 µS/cm to 50,000 µS/cm

1 125ml (4oz) Conductivty Calibration Solutions 84µS

Classical benchtop conductivity meter is suitable for research and education applications.

Platinum conductivity electrodes provide accurate and reliable measurements.

1 to 3 points calibration with automatic recognition for conductivity standards of 10 µS/cm, 84 µS/cm, 1413 µS/cm, 12.88 mS/cm and 111.8 mS/cm.

Confidence in results

Save time and money

Ease of use

3 in 1: EC and pH are vital measurements in Hydroponic systems. With the AEROSPRING 3-in-1 Multifunction Digital Meter you can accurately measure EC, pH and temperature values, accurate to +/- 2% EC, +/- 0.01 pH: and Temp: 0.9F. Comes with a lanyard.

Automatic Calibration: Featuring three-point calibration, the meter can automatically identify calibration solutions of pH 4.00, pH 6.86 and pH 9.18. Included 3-pack pH buffer solution (4.00, 6.86 and 9.18). EC calibration solution not included. Recommended to calibrate every 4-6 weeks for accurate measurements.

High Accuracy: Highly sensitive probe gives you a full measurement range of 0-19990μS/cm EC and 0-14 pH, Rsolution 0.01 pH; 1μS/cm; 0.1℃; 0.1°F; Multifunction Digital Meter green backlit display ensures you can read the measuring results under any lighting conditions.

Made in: Taiwan

Commercial brand: Extech

Test Instruments & Gauges

Takes quick and accurate measurements of EC, TDS, salinity, and resistivity simultaneously in a wide measurement range (0 to 200 mS/cm)

GLP data management (500 Groups of data storage) with USB data export

Quick and easy 1 to 4 points Auto calibration with calibration reminder function (standard calibration solutions included)

Monitor pH up and down, temperature, nutrient (TDS) level in water to maximize your grow and ensure plants get a balanced feed; General uses includes growing tent and reservoir; Selectable conductivity units include TDS, EC, ppm 500, ppm 700 and CF

This hydroponics tester has ATC that provides consistent reading regardless of any fluctuations in temperature; High and low alarm when outside parameters; Data logging with Bluelab Connect software

Lab quality glass pH probe with easy two point calibration; Conductivity / temperature probe comes factory calibrated so it's ready to be used; Double junction probe is more accurate than test strips and drops

DS Conductivity Meter: 0-5000 µM/µS

Automatically temperature compensated from 50° to 160°F (10° to 71°C)

Power One 9 volt battery supplied; Battery Life: >2000 tests/1 year

Kit includes: 1 EZO-EC Embedded Circuit

1 Conductivity Probe K 1.0 Range: 5 µs/cm to 200,000 µs/cm

1 125ml (4oz) Conductivty Calibration Solutions 12,880µS

Product Type: conductivity meter

Meter style: portable

Range (conductivity): 0 µs to 200 MS