Accurately weigh 4-5 g thoroughly-mix test portion directly into fat-extraction flask or tube, using free-flowing pipet; dilute with H2O to ca 10 mL, working test portion into lower chamber and mix by shaking. Add 2 mL NH4OH, mix thoroughly, and heat in water bath 20 min at 60 oC with occasional shaking. Cool, and proceed as in 989.05D (c) (see33.2.26), beginning “Add 10 mL 95% Alcohol.”