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Water Testers for pH, TDS, ORP and Hardness | Mojawoda.com

Testers and water meters – hardness, pH, TDS, ORP REDOX

At MojaWoda.com, you will find specialist water testers and meters designed to monitor the most important water quality parameters. These are practical devices for home users, businesses, and service work when fast and precise readings matter.

This category includes, among others, water hardness meters, water pH meters, TDS meters, and ORP REDOX meters. They make it easier to assess water condition, monitor filtration performance, and select the right water treatment solutions.

There are 17 products.

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Showing 1-17 of 17 item(s)
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Out of Stock EZDO7011 Waterproof pH/ORP Meter with Temp and ATC
Reviews: 9

EZDO7011 pH ORP temperature meter

EZDO7011 is a portable, waterproof meter for measuring pH, ORP (mV), and liquid temperature. It offers a range of 0.00-16.00 pH and -1000 to +1000 mV, with a resolution of 0.01 pH and a clear, dual-display LCD set at a 45° angle. It features automatic temperature compensation, a HOLD function, automatic calibration, and a replaceable electrode, which reduces operating costs.
Measured parameter
pH, ORP, Temperature
Test method
Electronic meter
Measurement range
pH 0.00–16.00; ORP −1000–+1000 mV

Brand: HM-DIGITAL

Ships in 24h | 14-day returns
Out of Stock COMBO pH/EC-983 Portable pH, EC & Temp Meter
Reviews: 7

COMBO pH/EC-983 pH meter conductivity meter thermometer

Portable Combo pH/EC-983 meter with thermometer for quick checking of pH, conductivity (EC), and temperature in water samples. It is suitable for aquaculture, laboratories, swimming pools and spas, water treatment, agriculture, and beverage testing. The replaceable probe, backlit LCD screen, IPX5 waterproof rating, and automatic temperature compensation (ATC) make field measurements easier.
Measured parameter
EC conductivity, pH
Test method
Electronic meter

Brand: HM-DIGITAL

Ships in 24h | 14-day returns
Reviews: 7

Droplet water hardness tester

Drop test for general water hardness (dH). It facilitates checking the hardness of water in the system and adjusting the settings of the water softener, as well as assessing the risk of limescale buildup in the washing machine, dishwasher, and fixtures. The measurement is performed by adding drops of reagent to the sample in the included container until the color changes from red to blue.
Measured parameter
Hardness
Test method
Drop titration

Brand: WODARO

Ships in 24h | 14-day returns
Price 18.50 zł
Out of Stock TRM1 Triple-Probe HM Digital TDS Meter for Water Systems
Reviews: 6

TRM1 HM Digital TDS meter three probes triple

TRM1 HM Digital is a triple TDS meter for monitoring the total dissolved solids in water. It offers a range of 1-9990 ppm (mg/dm3) with a resolution of 1 ppm up to 999 and 10 ppm above 1000. Three electrodes in John Guest quick-connect tees allow for quick hose attachment, and the line1/line2/line3 switch enables selection of the measurement point. Auto-off after 10 minutes.
Measured parameter
TDS
Test method
Electronic meter
Measurement range
1–9990 ppm

Brand: HM-DIGITAL

Ships in 24h | 14-day returns
Reviews: 5

TDS/EC E-1 TDS meter conductivity meter with thermometer

Pocket TDS/EC meter E-1 for quick measurement of density (TDS), conductivity (EC), and liquid temperature. It simultaneously displays the TDS or EC result and the temperature in °C or °F. It features automatic temperature compensation (ATC) from 1-80°C, a HOLD function, auto-off after 5 minutes, and a large readable LCD. Factory calibrated, with the option for calibration using buttons. Includes a case and a CR2032 battery.
Measured parameter
TDS, EC conductivity
Test method
Electronic meter
Measurement range
TDS 0–9999 ppm; EC 0–9999 µS

Brand: HM-DIGITAL

Ships in 24h | 14-day returns
Price 45.00 zł
Reviews: 3

TDS3 TDS meter with thermometer

TDS3 is a handy TDS meter with a built-in thermometer for quick assessment of the amount of dissolved substances in water and its temperature. It offers a HOLD function (record and freeze the reading with a beep), a large readable LCD display, and automatic battery saving (auto-off). Factory calibrated, comes with a clip case and batteries.
Measured parameter
TDS
Test method
Electronic meter
Measurement range
0–9990 ppm

Brand: HM-DIGITAL

Ships in 24h | 14-day returns
Price 45.00 zł
Reviews: 3

TDS3-K TDS meter with thermometer and calibration

TDS3-K is a pocket TDS meter for measuring the total dissolved solids in water (ppm) and temperature. It features a HOLD function with a beep for recording, a clear LCD display, automatic shut-off after 10 minutes of inactivity, and stops working when the reading does not change for 3 minutes. Factory calibrated with the option for manual calibration using a mini screwdriver.
Measured parameter
TDS
Test method
Electronic meter
Measurement range
0–9990 ppm

Brand: HM-DIGITAL

Ships in 24h | 14-day returns
Price 45.00 zł
Out of Stock HM Digital TDS-4 Pocket TDS Meter with Calibration
Reviews: 3

TDS-4 HM Digital TDS meter with calibration

HM Digital TDS-4 is a compact, lightweight TDS meter for quick assessment of the amount of dissolved substances in water (ppm). It offers a HOLD function with an audible signal, a large LCD display, and automatic shut-off after 10 minutes of inactivity. The device is factory calibrated and allows for manual calibration with a mini screwdriver. Measurement range is 0-9990 ppm.
Measured parameter
TDS
Test method
Electronic meter
Measurement range
0–9990 ppm

Brand: HM-DIGITAL

Ships in 24h | 14-day returns
Out of Stock Electronic pH Meter 02 with ATC and Button Calibration
Reviews: 3

pH meter 02 electronic

The Electronic pH Meter 02 is an easy-to-use pH tester for water and other solutions. Calibration is done using buttons (no screwdriver needed), and the automatic temperature compensation (ATC) makes it easier to obtain a stable reading. It is suitable for use in aquariums, swimming pools and spas, water treatment, laboratories, and for monitoring the pH of beverages. The package includes 2 calibration buffers and a protective case.
Measured parameter
pH
Test method
Electronic meter
Measurement range
pH 0.00–14.00

Brand: HM-DIGITAL

Ships in 24h | 14-day returns
Out of Stock HM Digital pH-80 Floating pH Meter with Temp and ATC
Reviews: 3

pH Meter - 80 HM Digital Electronic

The pH-80 HM Digital meter is a waterproof, electronic pH tester with simultaneous temperature measurement. It floats on the water's surface, has a large LCD display, a HOLD function, automatic shut-off, and a low battery indicator. It offers automatic three-point calibration and temperature compensation (ATC). It is suitable for use in aquaculture, swimming pools and spas, laboratories, water treatment, and testing of water and wastewater.
Measured parameter
pH
Test method
Electronic meter
Measurement range
pH 0–14

Brand: HM-DIGITAL

Ships in 24h | 14-day returns
Reviews: 3

Supreme drop water hardness tester

Supreme TITRANT is a professional drop tester for determining the total hardness of water in the system. It allows for multiple measurements, and the result is provided in dH (German degrees) , commonly used in Poland. It helps quickly assess whether the water qualifies for softening to protect installations, fittings, and household appliances from limescale buildup.
Measured parameter
Hardness
Test method
Drop titration

Brand: SUPREME

Ships in 24h | 14-day returns
Price 30.00 zł
Out of Stock FXT-3-AQ Aquafilter 7-Parameter Water Test Kit
Reviews: 2

FXT-3-AQ Aquafilter Water Quality Tester 7 parameters

Aquafilter FXT-3-AQ colorimetric water quality testing kit. It allows you to monitor 7 common parameters: pH (6-11), hardness (0-425), iron (0-5.0), chlorine (0-4.0), alkalinity (0-720), nitrates (0-50), and nitrites (0-10). From one kit, you can perform 2 complete water tests.
Test method
Colorimetric test

Brand: AQUAFILTER

Ships in 24h | 14-day returns
Out of Stock HM Digital AP-1 Pocket TDS Meter with Thermometer
Reviews: 1

AP-1 HM Digital TDS meter with thermometer

Pocket TDS meter HM Digital AP-1 with built-in thermometer for quick checking of solution density (TDS) and temperature. It displays both results simultaneously, has a HOLD function, a waterproof casing, and automatic shut-off after 5 minutes. Automatic temperature compensation (ATC) in the range of 1-50°C and a magnet for convenient attachment to metal surfaces.
Measured parameter
TDS
Test method
Electronic meter
Measurement range
TDS 0–5000 ppm

Ships in 24h | 14-day returns
Out of Stock DM1 HM Digital Dual TDS Meter for RO Filters
Reviews: 1

DM1 HM Digital TDS meter two probes dual

DM1 HM Digital Dual TDS Meter is a meter for continuous measurement of TDS (total dissolved solids in water) in RO filter systems. Two probes allow for monitoring values at the inlet and outlet (in/out switch). The reading range is 0-9990 ppm, with results above 999 ppm displaying the notation [x10] on the screen. The set includes cables, probes, and 1/4 inch tees with John Guest quick connectors.
Measured parameter
TDS
Test method
Electronic meter
Measurement range
0–9990 ppm

Brand: HM-DIGITAL

Ships in 24h | 14-day returns
Reviews: 1

AQUAPHOR drop test water hardness tester dH

The AQUAPHOR water hardness tester is a simple drop test for measuring hardness in German degrees (°dH). Just add drops of the reagent to the sample and mix until the color changes to green, and the number of drops corresponds to the result in °dH. The kit is suitable for home use, aquaristics, and for setting up devices such as water softeners, coffee machines, washing machines, and dishwashers.
Measured parameter
Hardness
Test method
Drop titration

Brand: AQUAPHOR

Ships in 24h | 14-day returns
Price 39.00 zł
Reviews: 0

pH Chlor Tablet Tester 40 TESTS for Pool Measurement Chlorine Meter pH

Pooltest Kit Palintest Tablet Tester for quick water quality testing in pools or jacuzzis. The kit allows for the measurement of chlorine (DPD1 tablets) and pH (Phenol Red tablets). Included are 40 tests : 20 for chlorine and 20 for pH, a test container, and a color scale for result comparison. Easy to use and clear reading without specialized equipment.
Measured parameter
pH, Chlorine
Test method
Tablet test

Brand: Palintest

Ships in 24h | 14-day returns
Price 45.99 zł
Reviews: 0

WODARO 7-in-1 Water Quality Tester pH TDS EC ORP SAL S.G. TEMP

The WODARO 7-in-1 water quality tester is a compact meter for pH, TDS, EC, ORP, SAL, S.G. and temperature with a backlit display, ideal for testing drinking water, aquariums, swimming pools, hydroponics, ponds and RO filtration systems.
Measured parameter
TDS, EC conductivity, pH, ORP, Salinity
Test method
Electronic meter
Measurement range
pH 0.00–14.00; EC 0–9999 µS/cm / 10–400 mS/cm; TDS 0–9999 ppm / 10–200 ppt; SAL 0–9999 ppm / 10–200 ppt / 0.1–25%; S.G. 0–1.222; ORP ±990 mV; TEMP 0–60 °C

Brand: WODARO

Free delivery
Ships in 24h | 14-day returns
Price 259.00 zł

Monitoring water parameters is an important part of the conscious use of filters, softeners, reverse osmosis, and other treatment systems. A properly selected tester or meter allows you to quickly check specific values, compare results before and after filtration, and continuously monitor water quality at home, in a business, or during service work.

In the Testers, water meters category, you will find devices for measuring basic and frequently monitored water parameters such as hardness, pH, TDS, and ORP REDOX. These solutions are useful for assessing water quality, monitoring treatment effectiveness, and the daily operation of water installations.

What are water testers and meters used for?

Meters and testers help you quickly check whether water parameters are within the expected range. They are useful both when you want to monitor drinking water and when you supervise the operation of filtration or treatment devices.

  • Water hardness meters help assess the level responsible for limescale buildup and monitor the effectiveness of softening.
  • Water pH meters are used to check the water reaction, which is important in many household and technical applications.
  • TDS meters allow monitoring of the total amount of dissolved substances in water, often used with reverse osmosis systems.
  • ORP REDOX meters help assess the oxidation-reduction potential of water.

Key benefits of choosing the right meter

A properly selected measuring device makes everyday installation monitoring easier and allows you to respond more quickly to changes in water quality.

  • enables quick measurement without a complicated procedure,
  • helps with ongoing monitoring of filters and treatment devices,
  • makes it easier to compare water parameters before and after filtration,
  • supports diagnostics at home, in a business, and during service work,
  • helps you make more informed purchasing and operating decisions.

How to choose a water tester or meter?

When choosing, it is worth starting with one basic question: which parameter do you want to monitor. Not every meter is used for the same purpose, so the most important thing is to match the device to the specific application.

Select the parameter you want to measure

  • If you want to check whether water causes limescale buildup, choose a water hardness meter.
  • If you want to monitor the reaction, a pH meter will be the right choice.
  • If you are monitoring filtration effectiveness and the level of dissolved substances, a TDS meter will be useful.
  • If you are interested in oxidation-reduction potential, choose an ORP REDOX meter.

Match the device to the place of use

  • For home use, convenient, fast-to-use devices for periodic water quality monitoring work best.
  • For business use, meters that allow regular supervision of water parameters as part of daily operation are useful.
  • For service work, practicality, speed of measurement, and the ability to perform convenient diagnostics in various conditions are important.

The measurement result should always be interpreted in the context of the type of installation, the filtration system used, and the goal you want to achieve. Drinking water is assessed differently from technical water, and differently again from parameters monitored during device servicing.

Testers and meters in the monitoring of treatment systems

Measuring devices are particularly useful wherever water quality has a direct impact on the operation of filters and installations. Regular monitoring helps you notice changes more quickly and assess whether the system is working as expected.

  • with water softeners, you can monitor the hardness reduction effect,
  • with reverse osmosis, you can monitor the TDS level,
  • in selected specialist applications, you can check pH or ORP REDOX,
  • during service work, it is easier to confirm the condition of the installation and the effectiveness of the device.

How to use water meters in practice?

For the measurement to be useful, it is worth performing it under similar conditions and comparing results over time. This is especially helpful when assessing changes after replacing filter cartridges, servicing a device, or changing the water source.

  1. Determine which parameter you want to check.
  2. Choose the appropriate tester or meter.
  3. Perform the measurement according to the intended use of the device.
  4. Compare the result with previous readings or the expected operating range of the installation.
  5. On this basis, assess whether further diagnostics, service, or replacement of filtration elements is necessary.

Who is this category for?

This category has been prepared for people who want to consciously monitor water quality and the operation of treatment systems.

  • for home users,
  • for owners of apartments and single-family houses,
  • for businesses using water with specific requirements,
  • for installers and service technicians,
  • for people comparing water parameters before and after filtration.

FAQ – frequently asked questions

What water parameters can I check in this category?

This category includes devices for measuring parameters such as water hardness, pH, TDS, and ORP REDOX.

Which meter should I choose to monitor a softener’s operation?

To monitor the softening effect, a water hardness meter works best because it allows you to assess the level responsible for limescale buildup.

What is a water pH meter used for?

A pH meter is used to check the water reaction. It is useful wherever it is important to monitor whether the water has the expected properties in terms of acidity or alkalinity.

What does a TDS meter measure?

A TDS meter helps determine the total amount of dissolved substances in water. It is a popular solution for monitoring filtration effectiveness, especially in reverse osmosis systems.

What is an ORP REDOX meter used for?

An ORP REDOX meter is used to monitor the oxidation-reduction potential of water. This type of measurement is used in selected household and specialist applications.

Are water testers and meters suitable for home use?

Yes, this type of device is useful for home users as well as for businesses and service work. They help quickly check basic water parameters without the need to perform complicated analyses.

When is it worth measuring water parameters regularly?

Regular measurements are worth taking after filtration installation, after replacing cartridges, after servicing devices, and whenever you want to compare water quality before and after treatment.

Can one meter check all water parameters?

Not always. The choice depends on which parameter you want to monitor. For hardness, pH, TDS, and ORP REDOX, devices matched to the specific type of measurement are used.

Are water meters useful for service technicians and installers?

Yes, because they make quick diagnostics, assessment of installation effectiveness, and comparison of results at different system operating points easier.