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1. VIVOSUN

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0.05ph High Accuracy Pen Type pH Meter +/- 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter, VIVOSUN pH and TDS Meter Combo

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VIVOSUN #ad - 3-in-1 tds meter: measurement range 0-9990ppm, 01- 800°c, 0-9990µs/cm; accuracy ± 2%, 32. 0-176. 0°f. Due to recently reviews about 1413 solution, please note that tds Meter had been calibrated by 1413 solution in advance; You can use it directly and it could last for 1 year without second calibration; So 1413 calibraiton solution is not included.

Note: this meter can't test sea water. Great for all home and laboratory TDS & pH testing applications including aquariums, swimming pools. Ph meter: full measurement range of pH 0 - 14, reliable and quick readings. Comes with protective case; Lightweight, handheld design for portability and convenience.
BrandVIVOSUN #ad
ManufacturerVIVOSUN #ad
Part Number4336465266

2. Bluelab

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Bluelab PENCON Conductivity Pen Fully Waterproof Pocket Tester, PPM 700, PPM 500, CF, EC

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Bluelab #ad - Made in new zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment; 1 Year Limited Warranty with proof of purchase.

Complete your monitor and controller system with other testers and meters from Bluelab. Auto temperature compensation makes this digital meter a handy tool with backlit LCD display and selectable units. Conductivity pen can monitor your nutrient level to maximize your grow and ensure plants get the balanced feed they need; calibration optional. Other features: auto off function, low battery indicator, units for temperature; KIT INCLUDES: AAA battery.
BrandBluelab #ad
ManufacturerBluelab Corporation Limited - Import (NZ) #ad
Height1.3 Inches
Length9.8 Inches
Weight0.24 Pounds
Width2.2 Inches
Part NumberBLU2221
ModelBLU2221
WarrantyOne year free repair or replacement guarantee

3. HM Digital

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3% Readout Accuracy, 0-9990 ppm Measurement Range, 1 ppm Resolution, HM Digital TDS-EZ Water Quality TDS Tester

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HM Digital #ad - Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. Economy model that is ideal for end-users. Measurement range: 0-9990 ppm. Fun, the resolution is in increments of 10ppm, the resolution is in increments of 1ppm.

Meters can be recalibrated with a mini-screwdriver. Tds-ez meters are calibrated with a 342 ppm nacl solution. 1000 hours of usage and power source is 2 x 1. 5v button cell batteries included LR44 or equivalent. Hold function: saves measurements for convenient reading and recording and battery life is approx.

From 1000 to 9990 ppm, translucent blue housing that's very strong and durable. Display: large and easy-to-read LCD screen. Includes a tds chart sticker on the back of the meter that explains TDS values. From 0-999 ppm, indicated by a blinking 'x10' image. Highly efficient and accurate due to its advanced microprocessor technology.
BrandHM Digital #ad
ManufacturerHM Digital, Inc. #ad
Height6.1 Inches
Length1 Inches
Weight0.06 Pounds
Width1.25 Inches
Part NumberTDS-EZ
ModelTDS-EZ

4. Gain Express

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

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Gain Express #ad - Measure 5 parameters, continuously monitoring shows readings on its large-screen triple display with backlight. Best in aquariums, spas, laboratory, hydroponics, swimming pools and other water systems.

Powered by its rechargeable battery installed in the main unit or the power adapter included which supports a long period of monitoring.  . Ph calibration powders and EC calibration solution are included in the set. Proven high accuracy and Auto Temperature compensation ATC, comes with removable BNC electrode. Measurement range: ec: 000~19. 99ec; ph: 000~14. 00ph; cf: 00~199cf; temp: 0~55°c 32~131°f; tds: 10~19990ppm. Calibrates easily and offer safer and precise measurement.
BrandGain Express #ad
ManufacturerGain Express Holdings Ltd #ad
Part NumberModel Number
ModelWQM-242

5. BLANDSTRS

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TDS Meter Digital Water Tester, Ideal ppm Meter for Drinking Water, 0-9999ppm, Spas, Swimming Pools, Temperature and EC Meter with Carrying Case, 3-in-1 TDS Meter, Aquariums, hydroponics

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BLANDSTRS #ad - Measurement range tds test range: 0-999 ppm. The tds test pen temperature test range: 01 °c to 800 °c. Accuracy range of±2%. Easy to use turn on the tds meter then put titanium alloy probe into water and stir water gently,  stable reading  will be auto-blocked on LCD in seconds,  ppm meter will automatically shut off after 2 minutes if without operation to save battery life.

Healthy lifestyle you can use it to test drinking water purity to make sure that if health to your body, hydroponicstest nutrients, maintenance aquarium, whether filter need replaced, pool and spa and so on. It can automatic temperature compensation ATC ensures reading is always accurate at various temperatures, accuracy range of±2%.

Widely use you can test drinking water,  swimming pools,  aquariums,  hydroponics,  it is convenient to test the quality of water anytime,  spas and other water systems wine and beer and so on. Lightweight and portable, anywhere. It can also check the water temperature, there are 2 temperature units to choose Fahrenheit or degree celsius. High accuracy tds meter water quality tester is professional hand-held test pen with TDS, EC and liquid temperature 3-in-1.
BrandBLANDSTRS #ad
ManufacturerBLANDSTRS #ad
Part Number20200226

6. Hofun

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Ppm Meter for Hydroponics Aquarium, Hydroponics EC Meter, TDS Temperature & Conductivity Meter 3 in 1, Digital Water Testers for Drinking Water, TDS Meter Digital Water Quality Tester, 0-9999 ppm

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Hofun #ad - Reliable tds meter -- accurate & quick equipped with premium quality titanium alloy probe, making it fits multiple usages, hydroponics meter,ideal water testers for drinking water test, swimming pool, aquarium, Hofun TDS water quality tester enables quick and convenient test. High quality tds meter hofun water quality test meter is manufactured under extra high standards and of excellent quality.

Three different measurement needs can be fulfilled by one digital water quality tester. In addition, advanced and reliable automatic Temperature Compensation ATC ensures measurement accuracy, laboratory, 0-9999 ppm, RO/DI Water etc. Thus we have absolute confidence of our water test meter. Easy reading big backlit lcd display & qualified water tester hofun water quality test meter for hydroponics ec meter with big backlit lcd is far superior than other ones, which allows wider angles of data reading and night reading.

Easy operation & energy saving hofun ppm meter allows one button operation. Green backlight ppm figure below 40 indicates TDS figure qualified for direct drinking water Notes: International standard adopted TDS figure 40 as a dividing line. Put the probe into water and LCD shows accurate results in seconds. Bonus 3 in 1 digital tds temperature & conductivity meter hofun 3 in 1 tds, but also saves your time and money, Electric Temperature & Conductivity Meter features the most advanced and updated technology. Not only been convenient for you, absolutely a helpful kit for your life.
BrandHofun #ad
ManufacturerHofun #ad
Height0.62 Inches
Length6.4 Inches
Weight0.06 Pounds
Width1.14 Inches
Part NumberTDS-03
ModelTDS-03

7. Bluelab

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And Conductivity Measures, Easy Calibration and Wall Mounted, Temperature, Bluelab MONGUA Guardian Monitor for pH

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Bluelab #ad - 24/7 monitor 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.

Mountable unit measures ph, ppm 700 and cf with lab quality glass that can be used for the pool, brewing, ppm 500, temperature and tds EC, hydroponics, drinking water, and growing. Made in new zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment; 2 Year Limited Warranty with proof of purchase. Easy two point calibration and auto temperature compensation makes this digital meter a handy tool with backlit LCD display and calibration reminders. Other features: international power supply, high RF tolerance, units for temperature; KIT INCLUDES calibration solution.
BrandBluelab #ad
ManufacturerBluelab Corporation Limited - Import (NZ) #ad
Height1.57 Inches
Length7.6 Inches
Weight0.48 Pounds
Width4.92 Inches
Part Number716336
ModelBLU27100
WarrantyTwo year free repair or replacement guarantee. 6 month guarantee for ph probe

8. KETOTEK

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KETOTEK Water Quality Test Meter, Fishpond and Swimming Pool…, Drinking Water, PH Meter TDS Meter 2 in 1 Kit with 0-16.00 ph and 0-9990 ppm Measure Range for Hydroponics, Aquariums, RO System

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KETOTEK #ad - Auto-off function and easy to use. Widely used and accurate. Cost-effective product partner. The pen meter partner also can be separately used whenever you need. It would be more economical and convenient than purchasing it separately.

Digital tds meter has measurement range 0-9990ppm and ±2% accuracy, PH meter has measurement range 000- 14. 00ph, 001ph accuracy and 001ph resolution. Small size and pocket portable. Digital tds meter and ph meter both have the function of auto-off, just need to press “on/off” to open and use it, it will automatically shut off with inactivity to save the battery’s life. The testing data from PH meter and TDS meter all are practical. Automatic temperature compensation atc.

Tds tester and ph tester have small size and low weight as a pen, they are easy to be carried, and convenient for you to take it in your pocket when you go out. The tds meter and ph meter both are easy to use, and just need to press “ON/OFF” to close it. Digital ppm tester and ph tester both have the function of ATC, the measuring data won’t be influenced by the water temperature, no matter testing the ppm or ph of the water.
BrandKETOTEK #ad
ManufacturerKETOTEK #ad
Part NumberKT-3-2 portable
ModelKT-3-2

9. HYCT

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PH Tester with 0-14 pH Rang and 0.01 Accuracy for Hydroponics,Aquariums,RO System etc by HYCT, PPM Meter and pH Meter Combo,TDS-EC-Temp3-in-1 TDS Meter with 0-9999PPM Range and ±2% Accuracy

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HYCT #ad - Automatic calibration and stable reading - ppm meter and ph meter kit has been calibrated in factory, you can use them directly and stable reading from big LCD screen, we provide 4 Packs buffer powders also in order to calibration if it not used for a long time.

Ppm meter and ph meter combo wide use - include a tds meter and a pH meter digital kit which can detect water quality in the hydroponic system, wine, wild water, aquarium, pools, water treatment, spring, rice fields, spas, reverse osmosisRO/DI system and lab etc. Family must-have and cost-effective - this ppm meter and pH meter combo set is must-have product for your family health and most water test scenarios, it is multifunction set and more economical than separately purchasing also.

Ppm meter and ph meter high quality&precision - is 3 in 1 tds meter digital water tester include tds meter, ec meter and automatic temperature compensationATC feature with high-quality titanium probes which improved accuracy upto ± 2%, 0-9990 ppm Measurement Range. Ppm meter and ph meter for water high quality&precision - configure a sensitive electrode sensor which can quickly and accurately detect pH value, which improved accuracy upto 001ph, 0-14 ph measurement Range.
BrandHYCT #ad
ManufacturerHYCT #ad
Height0.25 Inches
Length5.5 Inches
Weight0.2 Pounds
Width3.2 Inches
Part NumberHYCT---006

10. Luoleina

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EC & Temperature Meter 3 in 1,PPM Meter Pen for Hydroponics Aquarium, Digital TDS Meter, Ideal Water Quality Tester for Drinking Water, 0-9990 ppm

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Luoleina #ad - The lower the tds level in the water, which is any salt, higher TDS levels can indicate water that is more difficult for your body to use and has more contaminants that can pose health risks. Wide usage tds water quality - drinking water, hydroponics, whole house filtration system water, Aquarium, laboratory, Swimming Pool, RO/RD system,food & beverage, res tank, spring water, ppm tested works well.

What is tds tds = total dissolved solids, the more efficiently your bodys cells can use the water. It's light and fairly easy to carry in a pocket while working in the garden. Advanced 3-in-1 smart pen combines tds, ec, and a temperature meter for improved accuracy. Conversely, metal or mineral in the water. 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.

With an automatic temperature compensation and the measuring range of 0-9999 ppm +/- 2%, it is an extremely handy device to have around. Seems to be reliable. Measurement range easy-to-read backlit lcd screen, tds: 0-9999 ppm conductivity: 0-9990 μs/cm temperature range: 32-176°f and 1-80°c. Battery: 1 x 3v button cell cr2032 auto data-hold: lock and record readings Auto-off function for extended battery life , It is easy to use, the large back lit color-coded display is helpful and easy to read without glasses.
BrandLuoleina #ad
ManufacturerLuoLeiNa #ad
Part NumberLuoLeiNa-TDS115