Selection and proper execution of the best-suited maceration method are key factors in palynological studies. Household bleach, HNO 3 , and KOH used in successive steps, with application of moderate heat and vigorous agitation during each step, successfully macerate some bituminous coals in less than an hour. Permanent slides can be made quickly and easily by adding a drop of prepared mounting medium to a smear of dried residue.

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