Tintometer Lovibond MD 110 Mode D'emploi page 49

Methods
GB
Notes:
1. Strong alkaline or acidic water samples must be adjusted to a pH-value between pH 4
and 10 before the tablets are added (use 1 mol/l Hydrochloride acid resp. 1 mol/l Sodium
hydroxide).
2. Due to the accuracy of this method the result is rounded (in steps of 10 mg/l CaCO
3. The tolerance of the method is increasing with higher concentrations. When diluting
samples, this should be taken in account, always measuring in the first third of the
range.
4. Interferences:
• Magnesium hardness up to 200 mg/l CaCO
• Iron concentration above 10 mg/l may cause low results.
• Zinc concentration above 5 mg/l may cause high results.
5. For highest accuracy a batch related user calibration can be performed.
Reagent
Set
CALCIO H No. 1 / No. 2
MD110_2 03/2018
does not interfere.
3
Form of reagent/Quantity
Tablet / per 100
inclusive stirring rod
).
3
Order-No.
517761BT
49