What is the concentration of the Sodium Thiosulfate tablet in Microbiological sampling containers?

Dokument-ID

Dokument-ID TE1423

Veröffentlichungsdatum

Veröffentlichungsdatum 03.01.2022
Frage
What is the concentration of the Sodium Thiosulfate tablet in Microbiological sampling containers?
Zusammenfassung
Sodium Thiosulfate concentration
Antwort
Containers for microbiological sample collection often contain a Sodium Thiosulfate tablet for Chlorine removal. In almost all circumstances this tablet is 10 mg of active sodium thiosulfate or 7.14% (anhydrous). This is enough to remove up ~1.5 milligrams of Chlorine. If collecting a 100 mL sample volume, that is enough to remove up to 15 mg/L of Chlorine. (see also: How do I calculate the amount of sodium thiosulfate needed to remove the chlorine in the sample? )

This is true for Whirl-Pak bags with Dechlorinating Agent such (Product # 2075325 and 2075333), Sample Vial, 120 mL with Thiosulfate and Custody Tie (Product # 2634001), and Modified Colitag sample bottles (Product # 8888006).

 

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