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Delta MICRO for 1000ml stock (Delta-MIC)

For high contrast Microfilms I have made some adjustments to the Delta-STD recipe, but I don’t think that I am there, yet. Here is the current recipe for 1l stock:

• 1000ml (1l) Water
• 22 grams instant coffee
• 32 grams washing soda
• 10 grams Vitamin C

Let solution stand for about 5 minutes to clear microbubbles.
9:00 – 11:00 minutes at 20 degrees, fix and rinse as usual.