Laserfiche WebLink
~::~.:, <br />F~Cn: IrL ~CZ_`AN '~:xCu,CA FAX • AEG .?. .?S~ '~5~:5:.7 ' c' <br />• <br />7.1.1.9 Determine the weight of the liquid phase by <br />subtracttno the wetght of the filtrate container (see Step ),1.1.3) <br />from the total weight of the filtrate-filled container. Oetermtne <br />the weight o= the solid phase of the sample by subtracting th=_ <br />weight of tha liquid phase from the weight o' the total sample, as <br />determined in Step 7.1.1.5 or J.1.1.7. _ <br />Record the weight of the liquid and solid phases. <br />Calculate the percent solids as follows: <br />Portent solids = <br />Weight of solid (S tap 7.1.1.9) <br />x 100 <br />Total weight of waste (Step J.1.1.5 or 1.1.1.7) <br />7.1.2 If the percent solids determined fn Step 7.1.1.9 is equal <br />to or greater than 0.55:, then proceed eithar to Step 7.1,3 to determine <br />whether the solid material requires particle size reduction or to Step <br />).1.2.1 if it is noticed that a small amount of the filtrate is entrained <br />fn wetting of the filter. If the percent solids determined in Step <br />1.1.1.9 is less than 0.5:, then proceed to Step 7,2.9 if the nonvolatile <br />1312 analysis is to be performed, and to Section 1.3 with afresh portion <br />of the waste if the volatile 1312 analysis is to be performed. <br />7.1.2.1 Remove the solid phase and filter Pram the <br />filtration apparatus. <br />7.1.2.2 Dry the filter and solid phase at 100 r 20•C <br />until two successive waighings yield the same value within ± 1 %. <br />Record the final weight. <br />~1ote: Caution should be ta'.<en to ensure that the subject solid will not flash ~-- <br />upon heating. It is recommenQed that the drying oven be vented to a hood <br />or other appropriate device. <br />1.].2.3 Calculate the percent dry solids as follows: <br />Percent (Weight of dry sample + filter) -tared weight of filter <br />dry solids ~ x 100 <br />Initial weight of sample (Step 7.1.1.5 or 1.1.1.7) <br />1.1.2.4 If the percent dry solids is less than 0.5 :, <br />then proceed to Step 7.2.9 if the nonvolatile I312 analysis is to <br />be performed, and to Step 1.3 if the volatile 1312 analysis is to <br />be performed. If the percent dry solids is greater than or equal <br />to O.Sro, and if the nonvolatile 1312 analysis is to be performed, <br />return to the beginning of this Section (7,I) and, with a fresh <br />portion of sample, determine whether particle size reduction is <br />necessary (Step 7.1.3). <br />1312 - 8 Revision 0 <br />Noverber 1992 ~ <br />