1. Each time you remove and reinstall a measuring cuvette, you must calibrate the PoolWaterLAB. Here is a video tutorial.  If you suspect that something is wrong with the test results, calibrate the PoolWaterLAB and then continue working. (use tap water for calibration)

2. Fill all three measuring chambers with the water sample, whether you are running one test or three. Fill each measuring cuvette completely with the water sample.  Then use the "Water Leveler" to remove the excess water. The use of the "Water Leveler" ensures accurate sample dosing and consistent test results. ( Please note that you do not necessarily need to submerge the photometer in water to fill the cuvette with water. You can use a mug first, and then use the Water Leveler to remove any excess water.)  For a step-by-step demonstration, please watch the Water Leveler usage video.

3. Never leave the measuring cuvette with the water sample and reagent for a long time, as this will damage the measuring cuvette. Wash the measuring cuvette immediately after the test, preferably with clean tap water.

4. Do not touch the reagents with your hands!!!

5. Close the light protection caps well to prevent light from entering the measuring chambers.

6. Follow the instructions in the video tutorials for each test closely; every step is crucial and affects the results. It is obligatory to perform a Zero test with the water sample before adding any reagents, otherwise, you will not receive any results.

7. Always switch the tester to ‘Liquid’ or ‘Solid’ reagent mode according to the type of reagent you are using.

8. The installed firmware version must be FW V2.14 / DB V20 or above.