Manganese test

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A new high-range test for manganese in drinking water offers a measurement range of 0.02 to 5 mg/l, without the need for pre-test sample dilution. The test uses the approved standard Formaldoxime method (ISO 6333), and is supplied in packs containing two sets of tablets. One set of tablets is used to prepare the sample, correcting pH level, and the second tablet reacts with the manganese.

The resultant solution develops an orange/brown colour which indicates the concentration. This test is designed to be used with Palintest's 7100, 7500 and 8000 model photometers for precise photometric measurement.

In 2004 the World Health Organisation (WHO) reviewed the health risks posed by manganese in drinking water, and adopted a new guideline value of 0.4 mg/l. Concentration levels down to 0.05 mg/l may still cause discolouration of water, leading to consumer dissatisfaction. Similarly, the US EPA recommends a limit of 0.05mg/l because of the staining caused, with some industrial applications requiring levels down to 0.02 mg/l. The Manganese HR test from Palintest therefore allows a full range of concentration testing from trace to toxic, without extra cost or complexity.

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