Analytical scales (or balances) used in water treatment laboratories are high-precision instruments designed to provide extremely accurate mass measurements, often with readability ranging from 0.1 mg (0.0001 g) to 0.01 mg. These balances are essential for laboratory procedures such as total suspended solids (TSS) testing, volatile solids analysis, and the preparation of chemical standards and reagents. To ensure consistent accuracy and reliability, analytical balances are operated in controlled environments, protected by draft shields to minimize air movement and vibration interference, and routinely calibrated in accordance with laboratory quality control procedures.
