Eriochrome Extra Pure
SHORT DESCRIPTION
Eriochrome Extra Pure—typically referring to Eriochrome Black T—is a complexometric indicator primarily used in EDTA titrations to detect metal ions, especially calcium (Ca²⁺) and magnesium (Mg²⁺) in water hardness analysis. In its extra pure grade, this dye ensures sharp, precise endpoint detection by minimizing impurities that could cause background coloration or interferences in spectrophotometric or volumetric determinations. It functions by forming a wine-red complex with metal ions, which turns blue when the metal is sequestered by EDTA. Suitable for high-precision analytical chemistry, it should be stored away from light and moisture to preserve stability.
Methyl Red Solution Extra Pure
Methyl Red Solution Extra Pure is a ready-to-use, high-purity pH indicator solution widely used in laboratories for acid-base titrations and biochemical assays. It changes color from red at pH below 4.4 to yellow above pH 6.2, making it highly effective in detecting pH shifts with clear visual transitions. This solution is particularly valuable in analytical chemistry, microbiology (such as the methyl red test in bacterial identification), and educational experiments. Its extra pure grade ensures consistent performance, high accuracy, and minimal impurities, making it suitable for precise scientific applications.
Potassium Nitrate Extra Pure
Potassium Nitrate Extra Pure is a high-purity, crystalline chemical compound widely used in laboratories, pharmaceuticals, and food-grade applications. It serves as a strong oxidizing agent, commonly employed in analytical chemistry, fertilizer formulation, and pyrotechnics. In pharmaceutical settings, it may be used in toothpaste for sensitive teeth, while in food processing, it can function as a preservative under strict regulatory control. Its extra pure grade ensures low levels of impurities, making it ideal for precision-dependent procedures. The compound should be stored in a cool, dry place away from incompatible substances to maintain its stability and reactivity.