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7 3 Dry the evaporated sample for at least 1 hour at 103-105°C Coolin a desiccator and weigh Repeat the cycle ofdrying at 103-105°C, coohng, desiCcating and weighing untl1 a constant weight IS obtained or untl1loss of weight IS less than 4% of the prevIous weight, or 0 5 mg, whlchevens less 8 CalculatIOn 8.1 Calculate total residue as follows Total residue, mg/l =(A - ~Xl,OOO where A = weight ofsample + dish in mg B= weightofdishinmg C = volume ofsample in ml 9. Precision and Accuracy 9.1 Precision and accuracy data are not aval1able at this time BiblIography 1. Standard Methods for the ExaminatIOn of Water and Wastewater, 14th EditIOn, p 91, Method 208A, (1975) 1603-2PDF Image | Methods for Chemical Analysis of Water and Wastes
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