Cupric Sulphate Pentahydrate

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.

Potassium nitrate is a chemical compound with the chemical formula KNO₃. It is an ionic salt of potassium ions K⁺ and nitrate ions NO₃⁻, and is therefore an alkali metal nitrate. It occurs in nature as a mineral, niter. It is a source of nitrogen, from which it derives its name.

Formula: KNO3

Phenolphthalein is a chemical compound with the formula C₂₀H₁₄O₄ and is often written as “HIn” or “phph” in shorthand notation. Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and red in basic solutions.
Formula: C20H14O4