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2. Upon arriving at the sample station, the nao rene rubber ends of the sample lines are <br /> checked for dirt and dust-accumulation. If necessay, the sample.luxes are flushed with <br /> l <br /> 1 distilled water. <br /> s <br /> . The pressurelvacuum line is connected to the va gage of the vacuum bona pump, <br /> e.clarnp on the vacuum fine is opened and the residual vacuum.rem ' ' g on the. <br /> 'lysi eter unit is measured-ai3d recorded on the ly ' eterta ling tag. <br /> 4: The pres=eIvacuum line-.is connected to-die pressure pump and the discharge (sample) <br /> line opened. ?he dischargeline is inserted mito a-clean, <br /> unprtserved I liter plastic battle <br /> prepared and supplied by the analytical laboratory. ' <br /> 5.• The pressure pump is activated, forcing air into-the lysinmeter. If additional pressure is <br /> needed to retrieve the fluid more quickly, the Pressure is incr until adequate flow is <br /> achieved- <br /> 6. <br /> chieved6. The sample is split to other appropriately preserved bottles as necessary'for the analytical <br /> requirements. The samples arc placed in ice-filled chest to maintain a temperature of <br /> approximately 4 degrees Celsius during delivery to the laboratory under chain-Ofcustady <br /> procedures- <br /> 7- <br /> res_7_ After <br /> the sample is collected, the. lysixpeter vacumn.is resat (evacuated) to the _ <br /> Manufactured recommended value using a'hand vacuum pump. At this time,'the <br /> lysirneter is tested to evaluate potential leaks that could cause vacuumpressure loss_ The <br /> pressure/vacuam line is thea cLmnped and the lysimeter <br /> secured- <br /> 23-4S3949=FOJXI3lOR3Z A-13 lu 14 2400 <br /> sta 2M Kkurelax. <br /> a.b ' <br />