Chemicals

Nutrient Broth is a basic media composed of a simple peptone and a beef extract. Peptone contributes organic nitrogen in the form of amino acids and long-chained fatty acids. Beef Extract provides additional vitamins, carbohydrates, salts and other organic nitrogen compounds.

Parafilm is a semi-transparent, flexible film composed of a proprietary blend of waxes and polyolefins. Parafilm is a registered trademark of Bemis Company, Inc, headquartered in Neenah, WI. It is a ductile, malleable, non-toxic, tasteless & odorless self-sealing thermoplastic.

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

Plasticine, a brand of modelling clay, is a putty-like modelling material made from calcium salts, petroleum jelly and aliphatic acids. Plasticine is used extensively for children’s play, but also as a modelling medium for more formal or permanent structures.