Zinc Sulphide 250g

While litmus paper may be used to determine whether an aqueous solution is an acid or a base, it not good for estimating the pH value of the liquid.

Isopropyl alcohol/propan-2-ol is a compound with the chemical formula CH₃CHOHCH₃. It is a colorless, flammable chemical compound with a strong odor.

Aluminium Foil

Aluminum foil is suitable for many laboratory application, including sealing bottles, culture tubes,  , reducing evaporation or heat losses, covering corks, making weighing boats or dishes. May be used to cover vessels for autoclaving and incubating.