What is the correct DPD reagent to use with the Pocket Colorimeter™ II for pH and Chlorine?

Dokument-ID

Dokument-ID TE489

Veröffentlichungsdatum

Veröffentlichungsdatum 13.06.2022
Frage
What is the correct DPD reagent to use with the Pocket Colorimeter™ II for pH and Chlorine?
Zusammenfassung
Reagents for the Chlorine/pH Pocket Colorimeter™ II
Antwort
The Chlorine, Free and Total, High Range, DPD Method, Powder Pillows, DR300 and Pocket Colorimeter II_DOC316.53.01449 procedure explains to add 5 mL sample to the plastic 1 cm/10 mL sample cell, and add the DPD reagent for 25 mL of sample (Product # 1406499), this is not a mistake.

The DPD reagent was originally formulated to measure a lower range of chlorine. The ratio of 25 mL DPD reagent to 5-mL sample allows the range on this instrument to extend to 10.0 mg/L Cl 2.The reagent inside a 5 mL and a 25 mL DPD powder pillow differs only in the amount (weight fill) of reagent inside the pillow.

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