Buffer capsules are used for preparation of phosphate buffer solutions with stable pH, buffer capacity and low temperature coefficients. Buffer capsules are easy to use and dissolve easily. After that the pH value is automatically set at the necessary level.
Zinc oxide (ZnO) is a common inorganic compound with a large number of uses. It is insoluble in water but soluble in dilute acids and bases. Its melting point is extremely high—1975 ºC, where it also decomposes. ZnO exists in two common crystalline forms: wurtzite and zincblende.
Xylene Extrapure AR, 99.8%, is a high-purity aromatic hydrocarbon solvent widely used in laboratories for analytical and research purposes. With a purity of 99.8%, it meets the standards for Analytical Reagent (AR) grade, making it ideal for precise scientific applications. It is commonly used as a solvent in chemical reactions, sample preparation, and chromatography.
Potassium Hydrogen Phthalate Extrapure AR, 99.9% is slightly acidic, and it is often used as a primary standard for acid–base titrations because it is solid and air-stable, making it easy to weigh accurately.
Hydrazine Sulphate Extrapure AR, 99.5% is a white, water-soluble salt composed of cation hydrazinium and anion bisulfate which is solid at room temperature. Hydrazine sulfate has a number of laboratory, industrial and medical uses
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