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mrred

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• Mar 14, 2014

• #1

What PH do I need to keep the A bath to stop metol or phenidone from activity with or without ascorbic acid?

 

Gerald C Koch

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• Mar 14, 2014

• #2

A pH of 5.5 to 6.0 should be alright.

 

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mrred

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• Mar 14, 2014

• #3

If I am using metol and sodium metabisulphite or sodium bisulphite to lower the ph, would I still need some sodium sulphite as a preservative?

 

Rudeofus

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• Mar 15, 2014

• #4

mrred said:

If I am using metol and sodium metabisulphite or sodium bisulphite to lower the ph, would I still need some sodium sulphite as a preservative?

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No.

 

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mrred

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• Mar 15, 2014

• #5

Thanks for the replies folks, short and sweet like I like them!