VPE 511: Environment and Environmental Hygiene (2+1)

SAMPLES FOR PHYSICAL AND CHEMICAL ANALYSIS

• These must be collected in clean glass stoppered bottle made of neutral glass of 2 litre capacity.
• Bottle should be clean chemically, germ free or free of any organic material.
• Main objective is to check the action of water on serving pipes and so it is important that water be allowed to stand in pipes overnight and then collected. Stoppered bottles (Winchester quart bottle) should be used.
• Before collection, rinse bottle thrice with sample water, following each time 1/3^rd full. Then fill it up, stopper tightly, place a piece of cloth over the stopper, tie it.