Wipe Sampling Procedure
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METAL AND METALLOID PARTICULATES IN WORKPLACE …
www.osha.govSampling Procedure - Wipe Samples 5.3.1 . Wear clean, impervious, disposable gloves when taking wipe samples to prevent sample contamination. Change gloves between samples to reduce the possibility of cross contamination. 5.3.2 Moisten Smear Tabs and Whatman filters with deionized water prior to use. 5.3.3 ...
DNA quality: electrophoresis, spectrophotometry and ...
www.nbpgr.ernet.in10. When the measurement is complete, open the sampling arm and wipe the sample from both the upper and lower pedestals using a soft laboratory wipe. Simple wiping prevents sample carryover in successive measurements for samples varying by more than 1000 fold in concentration. 11. Measure subsequent samples. Repeat steps 5 and 6 for each sample.
12 LABORATORY SAMPLE PREPARATION
www.epa.govField and Sampling Issues that Affect Laboratory Measurements), sample screening activities, and objectives given in the appropriate planning documents. The laboratory sample preparation techniques presented in this chapter include the . Contents . physical manipulation of the sample (heating, screening, grinding, mixing, etc.) up to the