Keep perfect silence in the lab. It is essential for concentration and successful scientific working.
Keep your apparatus, table, and notebook neat and clean.
Add reagents in proportionate amounts. This is the key to success.
Keep the reagents stoppered, do not change the stoppers of the bottles and also do not disturb the arrangement on the shelf. Keep the reagents at their proper place.
Do not shift the bottles from the common shelf.
Do not throw broken glass pieces, match sticks, filter paper etc. in the sink. Throw them in the waste box kept for the purpose.
Shake the test tubes while heating. Do not throw hot and concentrated acids, especially concentrated sulphuric acid.
Pass Hydrogen Sulphide gas slowly in the solution. It is a very poisonous gas, do not leave the gas stopper open.
Keep the furniture in order before leaving the lab. Switch off lights, fans, and close windows.