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Potassium MetabisulphitePotassium metabisulfite, KSO, also commonly referred to as potassium pyrosulfite, is a laboratory grade chemical composed of white crystalline powder and exhibiting a distinct and pungent sulfuric scent. Its primary purpose is as an antioxidant or sterilization agent. Formula: K2S2O5.

Zinc hydroxide Zn(OH)₂ is an inorganic chemical compound

Twine is a light string or strong thread composed of two or more smaller strands or yarns twisted

light-weight metal (two thirds the density of aluminium)

commonly known as galena

Plane mirror and White metal object screen

also known as lye and caustic soda

and Methylene blue (a basic stain) in Methyl alcohol and is usually diluted and buffered during the staining procedure

Acid Red 87

known as Newton's rings

A thermocouple is an electrical device consisting of two dissimilar electrical conductors forming electrical junctions at differing temperatures

it is a potent base that is marketed in several forms including pellets

taking a 90° angle and extends until near the bottom of the flask