SOP For Determination of Temperature
Principle
Temperature measurements may be made with any mercury-in-glass thermometer provided it is checked occasionally against a precision thermometer certified by a competent agency.
Apparatus
Beaker
Calibrated thermometer
Procedure
- Make measurement with the thermometer immersed directly in the water body, after a period of time sufficient to permit constant reading.
- If the measurement of water temperature cannot be carried out directly, carry it out in a sampling bottle. The bottle should have a volume of at least one litre.
- Adjust its temperature, to that of the sample water before the measurement.
- Do not expose it to heat or direct solar radiation.
- Measure temperature of tap water in a bottle through the water flows until a constant reading is obtained.
Calculation
Take 3 reading and Result given after calculation of Mean of thermometer temperature reading.
Safety Guideline
Proper safety & health precaution are taken while doing the analysis by using safety goggles, apron, safety shoes & using fume chamber for fume generating chemicals.
Reference
IS 3025 Part-1989 RA: 2017