Best Apera Instruments Conductivity Meters in 2026

✔[ RELIABLE TDS METER WITH ACCURATE & QUICK MEASUREMENT ] Hofun ppm water tester is equipped with premium quality titanium alloy probe, which enables quick and convenient water total dissolved solids(tds) test. 0-9999ppm wide test range makes it fits multiple uses, like drinking water test, swimming pool, hot tub, laboratory, hydroponics, aquariums, well water, tap water, etc.

✔[ BONUS 3 in 1 TDS , EC & TEMP METER ] Hofun 3 in 1 TDS Meter, Electric Conductivity Meter & Temperature Meter features the most updated technology. Three different measurement needs can be fulfilled by one water tester meter. Not only been convenient for you, but also saves your time and money, absolutely a helpful water test kit for your water safety at home.

✔[ EASY READING BIG BACKLIT LCD DISPLAY & QUALIFIED WATER TELLER ] Hofun water hardness test meter with Big Backlit LCD is far superior than most digital water quality tester display, which allows wider angles of data reading and night reading. Besides, Red backlight ( ppm figure over 40 ) means non-drinking water. 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.)

✅ 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.

Product 1: 24/7 test, monitor control (doser) for your pH up and down in water to maximize your grow and ensure plants get a balanced feed (nutrients) with lab quality glass probe; General uses include growing tent and reservoir

Product 1: This hydroponics digital tester has ATC that provides consistent reading regardless of any fluctuations in temperature; High and low alarm when outside parameters with safety lockout

Product 1: Automated dosing with intuitive on-time/off-time for single-direction control; Combine with conductivity (TDS) pen and other meters for full garden nutrient monitoring in water and soil

※【One-click three tests, plug and play】：Are you still troubled by not knowing the soil condition of plants? The apine soil pH meter can help you relieve your worries and become your reliable gardening helper. You only need to put the sensor probe into the soil about 2-4 inches, switch soil moisture, Ph value, and light intensity with one key, the three kinds of data are read immediately plug and play, and help you quickly become a gardening expert!

※【Material upgrade, fast and accurate】: Our double-probes are made of high-quality aluminum and copper nickel-plated materials, which are more corrosion-resistant than the old pure copper. At the same time, they have high conductivity and high sensitivity, which greatly improves the speed and accuracy of soil moisture and pH detection and analysis, so that let your plants grow in the most comfortable environment.

※【No battery required, easy to carry】: Built-in silicon photovoltaic cell, which directly converts light into electrical energy, no need for additional batteries, environmentally friendly use. It is designed to be lightweight and portable for easy portability, suitable for indoor, outdoor use, and is an ideal soil testing tool for home plants, gardens, lawns, and farms. No special skills are required to help you enjoy your gardening journey with ease.

✅ 【Optimal Solution】 The ALANMOND soil meters is an advanced tool that allows you to check the volumetric water content in the soil, allowing you to make sure the plants are properly taken care of.

✅ 【Multiple Choices】 1 pack for practical use; 2 packs for sharing; 3 in 1 for overall testing. This meters can test soil moisture, sunlight and pH value; You can switch modes with one button; It makes gardening and planting more efficient.

✅ 【Practical Device】 Accurate and instant testing results, you can check for the humidity level of the soil immediately. The dial is large and clear, which makes it very easy to read, especially since it includes ten scales.

{Multiparameter pH EC TDS Temp Meters:} Grower’s good aid. YK-4 Pen Meter can measure pH, EC (Electrical conductivity), TDS (total dissolved solids), don’t need others, just press {MODE/CAL} key to switch readings of pH, EC (μS/cm / mS/cm), TDS (ppm).

{Easy to Calibrate-pH Meter:} Automatic pH calibration. Supports 3-point pH CAL at 7.00, 4.00, 10.01. Comes with 2 sets of pH meter calibration powders (4&7&10) for your calibration needs, (EC and tds meters are pre-calibrated). {Easy to Read:} The large screen display with green Backlight helps to read the pH tds ec meter at odd angles and in low light. Press the {HOLD/TEMP} key to lock the reading, which helps to easily record readings.

{Multiple Uses-pH Tester:} Multiparameter Meters can test pH, EC, tds levels and temperature of pH up and down in hydroponics to know your water is in the perfect range for maximum nutrient uptake. Widely used in DWC hydroponics system, RO/DI water, drinking water, tap water, beer, wine, kombucha, milk, home brewing, pool, aquarium, reef tank, hot tub, aquaculture, Spas, fish tank and urine.

Get accurate and reliable salinity readings with our advanced salinity testing equipment. Our testers are designed to measure levels of total dissolved solids (TDS) and conductivity in a range of water samples, making them perfect for agricultural, industrial, and

Measure temperature with a resolution of ±0.5°C and switch between °C/°F easily.

Enjoy maximum precision, even in extreme climates, thanks to this automated temperature coefficient system.

Very Easy to operate , quick testing, obvious results. simplest and cheapest way to test the water quality. buy your self & see the condition of your drinking water.

The electronic color tester is an effective sales tool that visually demonstrates the difference between high TDS water and low TDS water.

Prepare two transparent cups of water (100 to 150 ml ) one cup holds tap water, the other cup holds RO water.

Ease of Use: TDS water tester will lock the measure result when you press the "HOLD"button and automatically turn off after several minutes of non-use. PH tester has auto calibration function and you can quickly get readout.

Accurate and Reliable: PH resolution is 0.01pH, accuracy ±0.01pH.TDS meter rangs 0~9999ppm, Conductivity 0~9999 us/cm,accuracy ±2%.

Lasted Design: The digital TDS water meter and PH meter are portable to carry to anywhere, with the handhold size, you can read it easily while use ec meter.

Scientific maintenance: The three in one soil testing kit is more suitable for beginners, and can help you comprehensively understand the soil conditions of gardens and lawns, solving your confusion. You can adjust soil moisture and pH values based on numerical values to improve plant growth conditions in a timely manner, cultivate seedlings scientifically, and more importantly, it can help you test whether your soil is fertile, helping you make plants more prosperous.

Easy to Operate and Clear Reading: Simply insert the cleaned soil moisture tester probe into about 2/3 of the soil for a few minutes to immediately obtain test results from the indicator pointer, without the need for a battery, making it convenient and fast. We moisture meter have brighter colors and larger number windows, and a rotatable display that allows you to obtain test results more quickly.

Metal probes, Fast and Accurate: Our soil tester probes are made of high-quality metal materials, which are more corrosion-resistant than ordinary materials. Moreover, metal materials have high conductivity and sensitivity, greatly improving the speed and accuracy of soil moisture and pH detection and analysis, allowing you to quickly and accurately understand the growth environment of plants.

[5-in-1 pH METER] - Meter has a five-in-one function, which can measure PH, TDS, EC (Electrical Conductivity), Salinity %, Salinity ppm, and Temperature - with high precision every time. All-round measurement of water quality to ensure consistent results.

[Accurate pH Tester] - Featuring a solid glass probe, you can get a full measurement range of 0-14pH, 0.01 pH resolution. The pH meter uses a 3-point calibration for maximum accuracy, and includes extra calibration powder.

[TDS Measurement] - Fast and accurate TDS / PPM testing for hydroponics or anywhere TDS is critical. The TDS Range is 0~10,000ppm. Accuracy is ±2%.

3-in-1 Soil Tester: EC is the conductivity value in soil and is an important indicator of salt content in the soil. TDS is the total amount of all solid matter dissolved in water in the soil. CF is another representation of soil conductivity, and the CF value is a conversion unit of the EC value.

Accurate Measurement: Equipped with a high-precision electrode sensing probe, the EC soil tester is sensitive and responsive, allowing you to quickly and accurately measure soil EC, TDS, and CF values, helping you to better understand the soil.

Easy to use: Wide measuring range, high accuracy, small error, good stability, with automatic temperature compensation function. Easy to operate, just insert the electrode into the soil for quick measurement, easy to use.

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

✅3-in-1 Soil Tester: This meter can test soil moisture, light and pH value; You can switch modes with one button; It makes gardening and growing more efficient

✅Material: made of high-quality aluminum and copper nickel-plated materials, which are more corrosion-resistant than the old pure copper. At the same time, they have high conductivity and high sensitivity, which greatly improves the speed and accuracy of soil moisture and pH detection and analysis

✅Built-in silicon photovoltaic cell, which directly converts light into electrical energy, no need for additional batteries, environmentally friendly use

【3 IN 1 SOIL MOISTURE/PH/FERTILITY TESTER】We all know that Moisture/PH/Fertility is very important in the growth of plants, with our 3-in-1 Plant Moisture Fertility and PH Tester, you can know exactly when plants need which nutrients. Quick and easy to insert into the soil and get you more accurate data without batteries.

【LESS HURTS & FOLDABLE】Single moisture meter probe, less hurts to the Plant roots, doesn't dig up too much soil after test. The Head is 90 degree foldable, which makes it's easier to read, you don't need to bend over your waist when read scale. kindly note that DO NOT leave the meter in the soil for a long time, it will be corroded.

【LARGE SCREEN, EASY TO READ】Our Soil Moisture/PH/Feitility Tester has a large screen, which it's much easier for you to read. Clear reading dashboard and quick response. You only need to insert the probe into the soil for 2-4 inches, switch the soil moisture/PH/fertility with only one key, plug the 3-in-1 Soil Tester and read the data. Our Plant Care- Moisture Sensor will help you become a garden expert !

Quick and easy 1 to 4 points auto. Calibration with calibration guide and reminder

The quality 201T-F pH/temp. and 2301t-f conductivity/temp. Combination electrodes ensure stable & accurate measurements of regular water solutions for scientific research and quality control

GLP data management (500 groups of data storage) with usb data output

Product 1: Measures pH, temperature and (tds) EC, ppm 500, ppm 700 and CF with lab quality glass that can be used for the pool, drinking water, hydroponics, brewing, and growing

Product 1: EASY two point calibration and auto temperature compensation makes this digital meter a handy tool with backlit LCD display and calibration reminders

Product 1: Quickly monitor your nutrient level to maximize your grow and ensure plants get the balanced feed they need

HELP YOUR PLANTS GROW - Fast, reliable and versatile: Combo Meter Plus means you will be able to measure more and build a better understanding of your complete growing system. The multimedia Leap pH probe can be used to measure nutrient solution and directly in the rootzone in a range of growing substrates including soil, rockwool, coco coir and peat.

PLANT HEALTH IN THE PALM OF YOUR HAND - Manage, control & monitor your plant health & performance. The Bluelab Combo Meter Plus device will fit in the palm of your hand which will allow you to spot check wherever you are! The backlit, easy-to-read display and 2m/6’ cables give you the ability to measure in places previously inaccessible. Get answers at your fingertips.

SIMPLE & EASY TO USE - This device is all you need for simple, reliable nutrient solution and root zone management. Featuring a detachable pH probe with simple, 2-point calibration makes for ease maintenance. Get up and running fast. Quick and intuitive to use with simple one button presses to change between measurements. The Bluelab Combo Meter Plus a simple quick start guide to help you get started fast.

EASY TO READ & BATTERY NOT NEEDED: The Soil Moisture Meter with single probe wouldn't need battery to work. There's a tricolor dial area with clear dial and ten scales of our Soil Moisture Tester, which makes it easy to read.Red (1-3) DRY, Green (4-7) SUITABLE, Blue (8-10) WET. The plant moisture meter helps the plants grow healthy and make planting easy.

NEW PROBE, MORE SENSITIVE, PRECISE AND SAFE: The upgraded moisture tester is more durable and the probe is not easy to fall off or break off. The round tip can add more contact with the soil, which makes the test more accurate, meanwhile, it would be safer to use it. Please don not insert the plant soil moisture tester into the soil for a long time, or into water.

EXTREMELY ACCURATE ANDPRECISE：The Soil Tester makes advantage of different conductivity of 2 metals at the tip of the probe. Because water is a better conductor, so the more moisture in the soil, the greater the conductivity is. Throug this way, our Plant Water Meter Soil Meter relies on durable indicators, not batteries. Because it uses a mechanical device based on conductivity difference, the plant moisture meter is very accurate and precise.

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

No need for soil slurries with the steel penetration electrode.

Integrated temperature sensor for automatic temperature compensation.

Great for environmental and agricultural testing.

2-IN-1 FUNCTION: LAWNFUL 2-in-1 Soil Meter is a pocket tester specifically designed to directly measure soil Electrolytic Conductivity (EC) and temperature for quick and accurate readings. Testing the EC and temperature of your soil are a good start for healthy soil.

PROFESSIONAL TESTER: LAWNFUL Digital Soil Meter is INDUSTRIAL GRADE product with high precision. Triple-needled stainless-steel probes are highly sensitive. It shows if any parameters of your soil are either below or above the optimal range, helps measure and report your plant-available nutrient levels.

WIDE APPLICATIONS: Lightweight and portable design, can be widely applied at gardening, home or lab, etc. Test any soil type: lawn & turf, compost. Help you manage soil fertility & gardening conditions.

The 86031 Combo Water Testing Meter can measure the pH, Conductivity or TDS or Salinity and Dissolved oxygen depend on which kind of probe attach to the meter or user could attach three kinds of probes at the same time. So the 86031 Multiple Parameters Water Testers could be operated as the pH meter, conductivity meter, TDS meter, Salinity meter or D.O. meter as user needed.

We design different color connector on the meter, user only needs to screw on the probe with the same color, and then get the measuring reading accurate and fast.

User could change the probe or screw on the 86031 Combo Water Quality Measuring Instrument easily. And in order to avoid broken by the stone or particle attacking in the measuring environment, we have developed the specific anti-collision cap on each probe. So the 86031 Combo Water Testing Meter would be the best tool for all professional measuring purposes, including the Aquaculture, Aqua farm, LAB, swimming pool or water treatment business, or other related industry, no matter the fresh or sea water.

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.

INSTANT & ACCURATE – With stainless steel 4.8in(122mm) penetration probe, AMT301 Soil EC Tester provides fast and easy on the spot EC measurements for soil and hydroponics nutrient, etc.

COMPACT & PORTABLE – In a compact pocket size, you can take it everywhere easily. Use this portable EC meter, you can measure soil salinity in greenhouse soil or solution media right on the spot.

ATC FUCTION – With automatic temperature compensation function, the measurement is more accurate.

💧[EASY READING BIG BACKLIT LCD DISPLAY] PH and TDS meters with double color Bigger Backlit LCD which allows wider angles of data reading and night reading.

💧[PH Meter] The pocket size digital PH pen is equipped with (ATC) auto temperature compensation function. No more need to worry about the temperature of to-be tested liquid. It can accurately determine pH value of the sample at any temperature in a range of 32°F - 140°F (0°C - 60°C). The tester can be calibrated with using Buffer Powder.

💧[TDS Meter] 3 in-1 TDS Meter Digital Water Tester, Accurate&Quick check heavy metal content, soluble salt content and temperature in the water which will be displayed on the screen in ppm (parts per million).

LCD Displays DO or Saturation O2 and Temperature simultaneously. Displays Maximum/Minimum value and data hold.

Ideal for measuring dissolved oxygen levels and temperature in wide range, aquarium, school teaching experiment, lab sterile environment, aquaculture, scientific research etc.

Automatic Temperature Compensation, Manual Salinity (MSC) and Altitude (MAC) Compensation, and degree ℃/℉ switchable. Icon DO O2 and unit mg/L, ppm, %, ℃, ℉ for recognition easy during select function mode. Easy to replace DO probe module by user.