General Notes; Method Notes; Chemicalmethod Notes - Lovibond Photometer-SystemMD200 Bedienungsanleitung

GB

General notes

Method notes

• Prior to measurement ensurethat the sample issuitable for analysis(no major interference)
and does not require any preparation i.e. pH adjustment, filtration etc.
• Reagentsare designed for use in chemical analysis only and should be kept well out of
the reach of children.
• Ensureproper disposal of reagent solutions.
• Material Safety Data Sheets:available on request.
(Internet: www.lovibond.com)
Chemical method notes:
Method:
The organic material present in the sample is oxidised by a standard amount of a potassium
dichromate oxidising mixture. After oxidation is complete, the excessof this reagent is mea-
sured photometrically.
Application:
Samples can be measured if the chloride content does not exceed 1000 mg/l (LR/MR)or
10 000 mg/l (HR).
In exceptional cases,compounds contained in the water cannot be oxidized adequate. This
results in minimum findings, compared with the reference method.
Different methodsof sampling, preparation of the sampleitself and the time elapsedbetween
taking the sample and analysiscan all affect the obtained results.
MD200_1a 08/2011
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