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Unformatted text preview: Collect the extract and the washings in a suitable graduate Remove the filter ring from the bowl and dry in air Dry ring to constant mass at 230F Record total volume of extract Determine mass of ignition dish Agitate extract and immediately measure ~100mL into the dish Evaporate to dryness on a steam or hot plate Ash residue at a dull red heat 500-600C; cool Add 5 mL of saturated ammonium carbonate solution per gram of ash Digest at room temperature for 1 h Dry in an oven at 100C = *-W4 G V1V1 V2 W4 = total volume of extract G = ash in aliquot V1 = total volume V2 = volume after removing aliquot Post-Lab Test Conditions Test Conditions Results Results Comments Comments...
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- Spring '08