Top 10 Best bidi in 2026

Last Updated - 6/10/2026

🏆Best Choice

MEXYBE

2025 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Reliable Brand: MEXYBE was founded with a simple yet important mission: to provide everyone with a accurate and reliable way to test their water quality. We believe that access to clean and safe drinking water is a basic human right, and our tds meter digital water tester is one professional way that can help people achieve that. We are committed to providing high-quality products and excellent customer service. Join us in our mission to make clean and safe water accessible to everyone
•Accurate and Reliable Results: Tired of getting unreliable readings from other water testers? Look no further. The MEXYBE 2025 ALL-NEW water quality tester features a high-precision chip and a premium titanium alloy probe, ensuring accurate and reliable results every time. Equipped with cutting-edge technology and advanced features, it's the ultimate choice for precise water testing. So why wait? Experience dependable testing performance for you and your family today
•Multifunctional (4 in 1) and 5 Upgraded: Professional TDS (Total Dissolved Solids), EC (Electrical Conductivity), Temperature (Degree Centigrade) and Temperature (Fahrenheit) Meter 4 in 1. Upgraded with big backlit LCD for easier reading, auto-lock function for easier use, factory calibrated and hold function for direct use and auto-0ff in 2 minutes to conserve battery. These enhancements make it a user-friendly tds meter digital water tester for a variety of applications
•Two User-Friendly Features:1. 25% Larger Backlit LCD: The MEXYBE 2025 4-in-1 water quality tester has a screen that's 25% bigger than older 3 in 1 models the market, making it easier to read for everyone, including seniors and children. 2. Convenient TDS Chart: A colorful TDS chart is placed on the back of the tester and in the user guide, so you can quickly understand PPM values without searching online—saving you time with every test
•Multipurpose Tds Tester: Test the purity of drinking water to ensure it's safe and healthy, monitor if Reverse Osmosis (RO)/Deionization(DI) System works properly, whether filter need replaced, maintenance aquarium, hydroponics(test nutrients), well, pool, hot tub, spa and testing tap water, bottle water etc
•Give the Gift of Health: Looking for the perfect gift for your family and friends? Look no further than our water testing kit for drinking water! Our easy-to-use device lets you quickly and accurately test the purity of any water source, giving you peace of mind that you're drinking clean and healthy water. Whether you're shopping for a health-conscious loved one, a new homeowner, or someone who enjoys outdoor activities like camping and hiking, our tds water test kit makes the perfect gift
•Experience our live customer support: a dedicated team of water quality experts ready to offer rapid and efficient responses round the clock through live chat and email. We are committed to taking our customers' feedback seriously, as our sole aim is to deliver products and services that hold genuine value for you
•💖 Better water, better life. Experience the difference of pure and healthy water with your FAMILY by MEXYBE 2025 all-new 4 in 1 tds meter digital water tester!

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$10.99

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Craft911

Craft911 2025 Upgraded 4-in-1 Turbidity TDS Meter – Digital Water Tester for TDS, EC & Temperature (°C/°F) – Accurate 0-9999 ppm Reading – Ideal for Drinking Water, Aquarium, Hydroponics, Pool, Etc.

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Accurate and Reliable Turbidity TDS Meter: Equipped with a premium quality titanium alloy probe and an intelligent chip, our TDS meter, Electric Conductivity Meter, digital water tester ensures stable performance and exceptional accuracy for reliable water quality and turbidity testing. Ideal for testing Turbidity, PPM or EC for drinking water, filter water, bottle purified water, RO filters, aquariums, and hydroponics turbidity testing.
•4-in-1 Multifunctional Water Tester: Craft911 water quality tester measures Total Dissolved Solids (TDS), Electrical Conductivity (EC), and temperature (°C/°F), providing a comprehensive water quality test. Perfect for use as a water tester for drinking water.
•Easy-to-Read Backlit LCD Display: Features a large backlit screen for clear readings, even in low light conditions. The auto-lock function holds the reading for ease of use, making it an excellent tds water tester.
•Instant and Simple Operation: Just turn on the ppm water tester and dip it into the water for quick, accurate readings. The auto-off feature conserves battery life by shutting down the ec meter after 2 minutes of inactivity. Great for use as a digital TDS turbidity water tester or ppm meter.
•Customer Satisfaction Guaranteed: Includes a 3-year warranty and a 90-day money-back guarantee for complete peace of mind with your purchase. Trust our total dissolved solids meter for all your water quality testing needs.

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$9.49

$12.99

-27%

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HoneForest

HoneForest TDS Meter, Digital Water Tester - Accurate and Reliable, Measures TDS, EC & Temperature (°F/°C), 0-9990ppm, Water Test Meter for Drinking Water, RO/DI System, Aquariums, etc

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•ACCURATE AND RELIABLE: To achieve high accuracy, the TDS water tester is equipped with a premium quality titanium alloy probe, and an efficient intelligent chip that not only ensures stable performance but also contributes to exceptional accuracy, making it a trustworthy water quality tester
•MULTIFUNCTIONAL AND UPGRADED: Professional TDS (Total Dissolved Solids), EC (Electrical Conductivity) and Temperature Meter 3 in 1. Upgraded with big backlit LCD for easier reading, and auto-lock function for easier use. These enhancements make it a user-friendly tds meter digital water tester for a variety of applications
•EASY AND INSTANTLY: Just turn TDS meter on and stir water gently, then stabilized readings will be auto-locked on LCD in seconds, and the tds ppm meter will shut off automatically if without operation over 2 minutes
•MULTIPURPOSE TDS TESTER: Test the purity of drinking water to ensure it's healthy, monitor if Reverse Osmosis (RO)/DI System works properly, whether filter need replaced, maintenance aquarium, hydroponics(test nutrients), pool and spa, etc
•OUTSTANDING AFTER-SALES SERVICE: We are committed to providing exceptional after-sales customer service for the digital TDS water tester meter, ensuring a worry-free purchase

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$13.97

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Sper Scientific

Sper Scientific Turbidity Meter, Water Quality Tester, Portable Water Quality Meter for Field and Lab, Turbidimeter for Water Test with Carry Case (860040)

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•EASY TO USE: Our turbidity meters are incredibly accurate, meeting ISO 7027 standards with the nephelometric method. By measuring light scattering in water, they provide precise results crucial for maintaining water quality and meeting regulatory requirements.
•WIDE APPLICATION: Use across different industries including power plants, water treatment facilities, sewage treatment plants, beverage factories, environmental agencies, industrial water management, pharmaceuticals, healthcare, and more.
•LARGE DISPLAY: This Sper Scientific Turbidity Meter displays the turbidity level of aqueous solutions on a large, bright LCD screen. It can measure numerous different types of aqueous solutions and offers an automatic, pushbutton 2point selfcalibration feature that can be performed in under a minute. Features include autoranging and minmax recall.
•CARRY CASE: Includes calibration solutions for 0 NTU and 100 NTU, sample cell bottles, distilled water, and cleaning cloth. With the convenience of additional calibration solution availability, users can rely on this all-inclusive solution for accurate turbidity measurements.
•HEAVY-DUTY: This turbidity meter is equipped with a reliable circuit system and a long-lasting light source, ensuring consistent and accurate performance even after extended periods of use.

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$438.99

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BriSunshine

BriSunshine Lab Turbidity Meter, Handheld Portable Turbidimeter, Measuring Range 0-200 NTU, 9001 Certification Compliant (Formazine Standard Calibration Solution Included)

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•【Practicality】 - The portable laboratory turbidimeter is easy to operate, stable and highly accurate, enabling fast, accurate and consistent turbidity measurements.
•【Liquid Crystal Display】 - The turbidimeter LED LCD with backlight allows accurate readings, easy operation and high usability.
•【Optical System】 - The turbidimeter uses a high precision optical system. The measurement principle is based on the measurement of 90° scattered light from an infrared light source at turbidity. Capable of zero calibration.
•【Two Power Supply Methods】 - AC power and DC power, 4 batteries or 6V power supply can be supplied with power and easy to carry.
•【Application Range】 - Package comes with 400 NTU formazine standard solution (dilution needed) and two sample measuring bottles. The turbidity meter can be used for water quality testing, wine industry, drinking water, swimming pool water, pharmaceutical industry, waste water treatment, etc.

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$179.99

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Apera Instruments

Apera Instruments, LLC-AI481 TN400 Portable Turbidity Meter, Infrared Sensor, ISO 7027 Compliant, EPA Approved Standard Solutions for Easy Calibration, Accuracy: ±2%+Stray Light

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Infrared sensor — ISO7207 compliant cephalometric method (90°)
•Intuitive operation system on a large TFT screen— measure and calibrate at ease
•U. S EPA certified, non-toxic polymer standard solutions with 1-year shelf life, easy-to-use
•Continuous measurement mode available by holding the Measure button for 3 seconds
•CE and ISO 9001: 2015 certified

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$584.00

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AMTAST

AMTAST Turbidity Meter Digital Water Turbidimeter with Three Ranges (0~19.99NTU, 20~199.9NTU, 200~1000NTU) Handheld Turbidity Tester Meet ISO7027 Turbidity Gauge for Lab Water Treatment (Model AMT21)

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•𝐏𝐫𝐨𝐟𝐞𝐬𝐬𝐢𝐨𝐧𝐚𝐥 − 𝐆𝐫𝐚𝐝𝐞 𝐓𝐮𝐫𝐛𝐢𝐝𝐢𝐭𝐲 𝐌𝐞𝐭𝐞𝐫 – Featuring an integrated microprocessor, this turbidity meter delivers fast and accurate measurements fully compliant with ISO 7027 standards. Its sophisticated electronics ensure reliable performance across various water testing applications, providing results you can trust for both field and laboratory use.
•𝐇𝐢𝐠𝐡−𝐕𝐢𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐲 & 𝐋𝐚𝐫𝐠𝐞 𝐃𝐢𝐬𝐩𝐥𝐚𝐲 – Our handheld turbidity tester boasts an extra-large 45x25mm LCD screen that shows clear readings in switchable units (NTU/FTU/EBC). The optimized display layout ensures perfect readability even in challenging lighting conditions, making field measurements remarkably convenient.
•𝐄𝐱𝐭𝐞𝐧𝐬𝐢𝐯𝐞 𝐌𝐞𝐦𝐨𝐫𝐲 𝐂𝐚𝐩𝐚𝐜𝐢𝐭𝐲 – This turbidity gauge features built-in memory that stores and recalls up to 150 measurement points. The smart memory function allows users to track trends and compare historical data, significantly enhancing monitoring efficiency and data management capabilities.
•𝐄𝐧𝐞𝐫𝐠𝐲 & 𝐄𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭 – Our digital water turbidimeter incorporates automatic power management including low-battery warning and auto-shutdown after 10 minutes of inactivity. These intelligent features extend battery life while maintaining readiness for immediate use when needed.
•𝐂𝐨𝐦𝐩𝐥𝐞𝐭𝐞 𝐀𝐜𝐜𝐞𝐬𝐬𝐨𝐫𝐢𝐞𝐬 & 𝐏𝐨𝐫𝐭𝐚𝐛𝐥𝐞 – Each turbidimeter comes with a comprehensive accessory kit including calibration solutions, glass test vials, distilled water, cleaning cloth, measuring cup, and batteries. The included hard portable case provides optimal protection for both the instrument and its accessories during transportation.

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$379.99

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NEWTRY

NEWTRY Turbidity Meter, Portable Digital Water Turbidimeter, ISO7027 Compliant, Accuracy 0.1, 0-200NTU, LCD with Backlight, for Lab Water Treatment Plant Wine Industry

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•[Professional]: This turbidimeter works on the 90° scattered light principle. The instrument is calibrated with the standard solution of turbidity of Formazine as specified by ISO7027. The measurement range of this instrument is 0-200 NTU. The stability of the displayed value is ±1.5% (F.S30min), and the accuracy of the displayed value is 0.1.
•[Clear & Readable]: This turbidity meter is equipped with an LCD display with backlight for accurate readings, which can effectively avoid the influence of natural light on the readings. Therefore, it can clearly display the value whether indoor or outdoor. You can take readings at any time.
•[TWO Power Supply Options]: This turbidimeter can work on 4 batteries (DC power) or 6V power supply (AC power). The two power supply options make it easy to carry and convenient to measure. You can use it in the lab or take it outdoor. This instrument also has a low voltage indicator to remind you to replace the batteries.
•[Long Service Time]: This turbidity meter is equipped with a stable circuit system and a highly efficient long-life light source, so the instrument can work stably for a long time. Meanwhile, it is equipped with a high-precision optical path system, which can effectively improve the accuracy of the test results.
•[Wide Applications]: The turbidimeter is suitable for turbidity determination in labs, power plants, water plants, beverage plants, water quality testing departments, scientific research, wine industry and other departments.

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$179.90

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VTSYIQI

Portable Turbidimeter Turbidity Meter Kit Turbidity Tester with 4 PCS Calibration Solution Vials Range 0~1100 NTU/FNU 0~275 EBC 0~9999 ASBC 2-5 Point Calibration 100 Groups Storage USB Interface

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•★Turbidity measurement instrument Easy-to-use portable turbidity meter comes with a standard carrying case. 2 to 5 points push-button calibration using the Formazin Standards.
•★Turbidity measurement Selectable 4 turbidity units, including the NTU, FNU, EBC and ASBC. Single measurement mode automatically recognizes and holds the stable reading.
•★Turbidity measurement Device Continuous measurement mode can be used for indexing or matching the sample vials. Auto-Power Off effectively conserves battery life.
•★lab Turbidity Meters Setup menu allows setting the 7 parameters, including the number of calibration points, resolution, date and time, etc. Reset feature automatically resumes all settings back to factory default options.
•★Turbidity testing equipment Expanded memory stores and recalls up to 100 data sets. Stored data can be transferred into computer by USB communication interface. Multi-mode power scheme (battery, power adapter or USB port) ensures that use the meter smoothly.

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$425.00

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Extech

Extech TB400 - Portable Turbidity Meter – Measures 0.01 to 1000 NTU, Includes Calibration Standards, Batteries, and Hard Case

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Wide Measurement Range - Accurately measures turbidity from 0.01 to 1000 NTU, suitable for various water quality testing applications.
•User-Friendly Interface - Features a large LCD display with intuitive controls for easy operation and data interpretation.
•Portable Design - Compact and lightweight, making it ideal for field testing and on-the-go measurements.
•Comprehensive Kit - Includes calibration standards, batteries, and a hard carrying case for convenient storage and transport.
•Durable Construction - Built to withstand the rigors of field use, ensuring reliable performance in various environments.

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$580.60

$656.53

-12%

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