1. Fill vial with water upto arrow level. Allow to soak the rolled filter bud and if required shake gently. On release
of medium from bud, colour of water will change from yellow to brown. Keep at room temperature (30°C)/closed
room/ pocket or preferably at 35-37°C for 24 to 48 hours.
2. Observe for blackening of contents after specified period.
3. If colour turns black, water is not fit for drinking.
4. Add few drops of some disinfectant (i.e. Dettol, phenyl etc.) and discard the bottle. Preferable to autoclave
wherever facility is available.
1. Fill vial with water upto arrow level. Allow to soak the rolled filter bud and if required shake gently. On release
of medium from bud, colour of water will change from yellow to brown. Keep at room temperature (30°C)/closed
room/ pocket or preferably at 35-37°C for 24 to 48 hours.
2. Observe for blackening of contents after specified period.
3. If colour turns black, water is not fit for drinking.
4. Add few drops of some disinfectant (i.e. Dettol, phenyl etc.) and discard the bottle. Preferable to autoclave
wherever facility is available.
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