Lovibond Tintometer Manual Del Usuario página 39

Notes
1. The terms Alkalinity-p, p-Value and Alkalinity to pH 8.2 are identical.
2. For accurate test results exactly 10 ml of water sample must be taken for the test.
3. This method was developed from a volumetric procedure for the determination of
Alkalinity-p. Due to undefined conditions, the deviations from the standardised method
may be greater.
4. Conversion table:
1 mg/l CaCO
3
1 °dH
1 °fH
1 °eH
CaCO
3
°dH
°eH
°fH
°aH
5. By determining Alkalinity-p and Alkalinity-m it is possible to classify the alkalinity as
Hydroxide, Carbonate and Hydrogencarbonate.
The following differentiation is only valid if:
a) no other alkalis are present and
b) Hydroxide und Hydrogen are not present in the same water sample.
If condition b) is not fulfilled please get additional information from
"Deutsche Einheitsverfahren zur Wasser-, Abwasser- und Schlammuntersuchung, D 8".
Case 1: Alkalinity-p = 0
Hydrogen carbonate = m
Carbonate = 0
Hydroxide = 0
Case 2: Alkalinity-p > 0 and Alkalinity-m > 2p
Hydrogen carbonate = m – 2p
Carbonate = 2p
Hydroxide = 0
Case 3: Alkalinity-p > 0 and Alkalinity-m < 2p
Hydrogen carbonate = 0
Carbonate = 2m – 2p
Hydroxide = 2p – m
Reagent / Accessories
ALKA-P-PHOTOMETER
ALKA-P-PHOTOMETER
07/2017
mg/l CaCO °dH
3
---- 0.056
17.8 ----
10.0 0.56
14.3 0.80
Form of reagent/Quantity
Tablet / 100
Tablette / 250
°fH °eH
0.10 0.07
1.78 1.25
---- 0.70
1.43 ----
Order-No.
513230BT
513231BT
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