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Old 8th July 2021, 06:39 PM
Michael Michael is offline
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Join Date: Dec 2008
Location: Ballinderry Lower, Co. Antrim
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Natrium is sodium and Kalium is potassium. -sulphite, -quinone, -carbonate and -bromide are as you'ld expect.

250 ml for a stock solution and mix 1+3 for use.

1-2 minutes for normal development.

Get a second opinion, though.
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