Bottle test equipment needed

Equipment Needed for Tetti Several glass slides Two glass stirring rods Porcelain SPOT plate HCL in alcohol—4-oz. bottle KOH in alcohol—4-oz. bottle One small funnel Two test cubes. 

Many respected certified laboratories cannot analyze for CWM. This is because the government requires laboratories that analyze for chemical warfare material to have a 24-hour armed guard due to the small vials of CWM they need to calibrate their testing equipment. At the Spring Valley site, a contractor dug up some bottles and sent them to a respected environmental laboratory in the area for analysis. The lab director mentioned that one bottle smelled like chromic acid. He was surprised to learn that we suspected both bottles contained CWM. A little knowledge may be dangerous if it produces overconfidence. 

The patch test method of monitoring the degree of particulate contamination in liquids is undertaken by observing the discoloration of the surface of a 5 pm filter membrane, through which a standard volume of liquid has passed. PVC bottles (120 ml) are used to collect the sample, and this is then processed via a stainless steel funnel filter holder and flask under vacuum. Care is needed in processing as rinsing solvents must themselves be filtered to avoid cross-contamination. Care is also needed to prepare the equipment for re-use. 

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