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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.

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EZDO7011 is a portable, waterproof meter for measuring pH, ORP (mV), and...
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.
FREE DELIVERY
Price 749.00 zł

Brand: HM-DIGITAL

Reviews: 9
Portable Combo pH/EC-983 meter with thermometer for quick checking of pH,...
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.
FREE DELIVERY
Price 299.00 zł

Brand: HM-DIGITAL

Reviews: 7
TRM1 HM Digital is a triple TDS meter for monitoring the total dissolved...
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.
FREE DELIVERY
Price 265.00 zł

Brand: HM-DIGITAL

Reviews: 6
The pH-80 HM Digital meter is a waterproof, electronic pH tester with...
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.
FREE DELIVERY
Price 255.00 zł

Brand: HM-DIGITAL

Reviews: 3
DM1 HM Digital Dual TDS Meter is a meter for continuous measurement of TDS...
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.
Price 169.00 zł

Brand: HM-DIGITAL

Reviews: 1
HM Digital TDS-4 is a compact, lightweight TDS meter for quick assessment of...
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.
Price 92.00 zł

Brand: HM-DIGITAL

Reviews: 3
The Electronic pH Meter 02 is an easy-to-use pH tester for water and other...
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.
Price 49.00 zł

Brand: HM-DIGITAL

Reviews: 3
Pocket TDS/EC meter E-1 for quick measurement of density (TDS), conductivity...
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.
Price 45.00 zł

Brand: HM-DIGITAL

Reviews: 5
TDS3-K is a pocket TDS meter for measuring the total dissolved solids in...
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.
Price 45.00 zł

Brand: HM-DIGITAL

Reviews: 3
TDS3 is a handy TDS meter with a built-in thermometer for quick assessment...
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.
Price 45.00 zł

Brand: HM-DIGITAL

Reviews: 3

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.