Lovibond Tintometer MD 100 Manual De Instrucciones página 15

Silicate LR PP / M351
Analyses
The following table identifies the output values can be converted into other citation forms.
Unit
mg/l
mg/l
EN
Chemical Method
Heteropolyblue
Appendix
Interferences
Removeable Interferences
1. Close the vials with the cap immediately after adding the Vario Molybdate 3 reagent
solution, otherwise low readings may result.
2. Occasionally water samples contain forms of silica which reacts very slowly with
Molybdate. The nature of these forms is not known. A pre-treatment with Sodium
hydrogencarbonate and then with Sulphuric Acid will make these forms reactive to
Molybdate (pre-treatment is given in "Standard Methods for the Examination of Water
and Wastewater" under " Silica Digestion with Sodium
Bicarbonate").
Interference
Fe
PO
3-
4
S
2-
Method Validation
Limit of Detection
Limit of Quantification
End of Measuring Range
Sensitivity
Confidence Intervall
Standard Deviation
Variation Coefficient
16
Cite form
SiO
2
Si
from / [mg/l]
large quantities
50
in all quantities
0.01 mg/l
0.03 mg/l
1.6 mg/l
1.35 mg/l / Abs
0.01 mg/l
0.004 mg/l
0.46 %
Scale Factor
1
0.47
EN Method Reference Book 1.0