Tintometer Lovibond MD 110 Mode D'emploi page 47

Methods
GB
tA
0.0.0
Zero
Test
tA
RESULT
Notes:
1. The terms total Alkalinity, Alkalinity-m, m-Value and Alkalinity to pH 4.3 are identical.
2. For accurate results exactly 10 ml of water sample must be taken for the test.
3. Conversion table:
1 mg/l CaCO
3
*Carbonate hardness (reference = Hydrogencarbonate-anions)
Example:
10 mg/l CaCO = 10 mg/l · 0.056 = 0.56 °dH
3
10 mg/l CaCO = 10 mg/l · 0.02 = 0.2 mmol/l
3
Reagent
ALKA-M-PHOTOMETER
MD110_2 03/2018
Alkalinity-m with Tablet
5 – 200 mg/l
Fill a clean vial (24 mm Ø) with 10 ml of the water sample and
perform zero calibration (see "Operation").
Add one ALKA-M-PHOTOMETER tablet straight from the foil to
the 10 ml water sample and crush the tablet using a clean stirring rod.
Close the vial tightly with the cap and swirl gently several times until
the tablet is dissolved.
Place the vial in the sample chamber making sure that the
are aligned.
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 3 seconds.
The result is shown in the display in mg/l CaCO
Tolerance: ± 5% (full scale)
Acid demand to pH 4.3
DIN 38 409 (K )
S4.3
0.02
Form of reagent/Quantity
Tablet / 100
.
3
German English
°dH* °eH*
0.056 0.07
Order-No.
513210BT
marks
French
°fH*
0.1
47