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Sodium nitrite solution is a reference reagent used for verification of stray light performance in UV-Visible spectrophotometers according to pharmacopoeial standards in pharmaceutical and analytical laboratories.

🏭⚗️ Production
Solution is prepared by dissolving accurately weighed high-purity sodium nitrite in appropriate solvent, typically water, to achieve precise concentration required for stray light testing. It is dispensed into sealed vials to ensure stability, prevent contamination, and maintain reproducible optical properties.

🔬 Properties
Solution is clear, stable under recommended storage conditions, and provides high absorbance at specific wavelengths. These characteristics enable accurate detection of stray light interference and verification of instrument linearity and precision at low transmittance levels.

🧪 Applications
In pharmaceutical and analytical laboratories, sodium nitrite solution is used for calibration, verification, and performance qualification of spectrophotometers. It supports instrument qualification (IQ, OQ, PQ) and routine performance checks to ensure stray light does not affect analytical measurements, maintaining accuracy and regulatory compliance.

⚠️ Safety
Solution should be handled according to standard laboratory safety practices, including gloves and protective eyewear. It should be stored in a cool, dark place, and empty containers disposed of properly according to laboratory safety regulations.