A; Transfer 1000 ml of bleach fix into a suitable size container equipped with variable speed agitation such as a magnetic stirrer assembly. Set the initial agitation speed to medium. B: Adjust the pH of the bleach fix to 5.5 with acetic acid. (Caution: Never mix acetic acid directly with "VenSil" Solution as this will decompose the "VenSil" solution and liberate large volumes of hydrogen.) C: Add, dropwise and below the surface, the required amount of prediluted "VenSil" solution over a 30 min period.
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