Inaccurate GH/KH calculation results

Problem: Obtained hardness values don't match expected ones

Solution:

• Check correctness of reagent mass input
• Ensure component solubility data is correct
• Check test with calibration solution

Remineralizer doesn't dissolve completely

Reason: Solubility of one of the components exceeded

Solution:

• Check solubility limits
• Increase water volume for dissolution
• Use step-by-step component dissolution

Incorrect TDS in prepared water

Reason: Not all dissolved substances are accounted for or calculation error

Solution:

• Check TDS of each component separately
• Check TDS meter with 0.9% sodium chloride calibration solution (saline). 1 ml of saline increases TDS by 9 ppm in 1 L of RO water. This way you can check different measurement ranges by gradually adding 1 ml of saline to a container with RO water.
• Compare calculated and measured TDS values
• Selected reagent is not in the remineralizer calculation system (notify support)