Distilled Water
Distilled water is commonly used in laboratories for various purposes due to its high purity. Here are some of its key applications:
- Chemical Reagent Preparation: Distilled water serves as a base solvent for preparing chemical reagents with precise concentrations. Its purity ensures that the reagents are not contaminated by impurities present in regular tap water.
- Dilution of Solutions: In experiments where precise dilution is crucial, distilled water is often used to ensure accurate results without introducing additional substances that could interfere with the experiment.
- Media Preparation for Microbiology: Distilled water is used in the preparation of culture media for microbiological studies. Microorganisms are highly sensitive to contaminants, so using distilled water helps ensure the growth of pure cultures.
- Electrolyte Solutions: In electrochemistry experiments, especially those involving sensitive instruments like pH meters or spectrophotometers, distilled water is used to prepare electrolyte solutions to prevent interference from impurities.
- Calibration of Equipment: Many laboratory instruments require calibration using solutions of known concentrations. Distilled water is often used as a blank or reference solution for calibrating various instruments.
- Glassware Cleaning: Distilled water is used for rinsing glassware after cleaning to prevent residue or contaminants from tap water, which could affect subsequent experiments or analyses.
- Analytical Chemistry: In analytical chemistry techniques such as chromatography or spectroscopy, distilled water is used as a solvent or blank to ensure accurate measurements and reliable results.
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