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This is a firm medium that keeps well and makes a good base for egg collecting. Wrap filled petri dishes and store at 4-- 14oC (they should keep for at least 6 weeks). Substitute molasses for the corn syrup if you prefer a dark medium, or add food coloring. This recipe makes about 60 6 x 2 cm plates.
|Light corn syrup||350||milliliters|
|10% p-Hydroxy-benzoic acid methyl ester in 95% ethanol||38||milliliters|