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METHOD PROCEDURES
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HARDNESS
, CALCIUM
• Press the
or
key to access the second level functions.
• Press
Chem Frm
to convert the results to
French degrees (°f), German degrees (°dH)
and
English degrees (°E).
• Press the
or
key to return to the measurement screen.
Note:
This test will detect any calcium contamination in the beaker, measuring syringes or
sample cells. To test cleanliness repeat the test multiple times until you obtain consistent results.
SAMPLE DILUTION
This meter is designed to determine low levels of hardness, typically found in water purification
systems. Dilutions must be performed with hardness-free water or the readings will be erroneous.
To reduce the level of hardness by a factor of one hundred:
• Fill a 1 mL syringe with the sample.
• Add 0.5 mL of sample to a clean, dry 50 mL beaker
• Fill the beaker up to the 50 mL mark with hardness-free water.
INTERFERENCES
Interference may be caused by:
• Excessive amounts of heavy metals