Lovibond MD 100 Mode D'emploi page 32

Analyses
The following table identifies the output values can be converted into other citation forms.
Unit
mg/l
mg/l
Chemical Method
N-(1-Naphthyl)-ethylendiamine
Appendix
Calibration function for 3rd-party photometers
Conc. = a + b∙Abs + c∙Abs
a
b
c
d
e
f
Interferences
Persistant Interferences
1. Antimony (III), iron (III), lead, mercury (I), silver, chloroplatinate, metavanadate, and
bismuth can result in interference as a result of precipitation.
2. Copper(II) ions may give a low result as they accelerate the
decomposition of the diazonium salt.
3. It is unlikely in practice that these interfering ions will occur in such high concentra-
tions that they cause significant errors.
Derived from
DIN ISO 15923-1 D49
31
Nitrite T / M270
Cite form
N
NO
2
+ d∙Abs + e∙Abs
2 3
ø 24 mm
-5.14368 ∙ 10
1.76663 ∙ 10
1.20299 ∙ 10
Scale Factor
1
3.2846
+ f∙Abs
4 5
□ 10 mm
-5.14368 ∙ 10
-3
3.79825 ∙ 10
-1
5.56082 ∙ 10
-2
EN Method Reference Book 1.0
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