
Complete viewing required: every step is crucial to obtain results
Total Hardness: 00 – 500 ppm (mg/l)
Use Liquid Reagents Total Hardness N°1*+Total Hardness N°2
25-TH
Step-1
• Make sure the measuring chambers are clean beforehand.
• Rinse them with the water you are going to test.
• Turn on the Water Tester using the power button.

Measuring chamber
Power button
Step-2
• Use the special syringe to add 10 ml of water to each of the three measuring chambers.
OR
- Fill the cuvette directly from the water source you are testing.
- Insert the Water Leveler into the chamber.
- Excess water will drain via side channels, leaving exactly 10 ml in each chamber.
Special syringe or Water Leveler



Step-3
• Cover the measuring chamber with the light protection cap.
• Press the ZERO button.
Light protection cap
ZERO button

ZERO
Step-4
• Press the T1 button to go to the selection menu for the test parameters.
The T1/T2/T3 button functions:
– Single click: add a parameter.
– Double quick click: remove a parameter.
– Long press (count to three): open the parameter list.

Step-5
• Use the up and down buttons to select the desired parameter for measurement.
Up and down buttons

Step-6
• After selecting the desired parameter, click the OK button to confirm your selection.
OK button

Step-7
• Shake liquid reagents before use.
• Add the reagent to the chamber №1.

Add 10 drops of Total Hardness N°1 + 4 drops of Total Hardness N°2
Step-8
• Using a special stirring stick, stir to mix the reagent with the water sample.
Special stirring stick

Step-9
• Cover the measuring chamber with the light protection cap.
• Press the T1 button to start the countdown.
Light protection cap

T1 button
Step-10
• Press the OK button, wait until the countdown ends and the test results appear.
OK button

If you want to upload the test results to the cloud, press the Back button (which also functions as Zero). The word “Test” will appear on the screen — then press the Bluetooth/Wi-Fi button.