Laborwaagen

Laborwaagen, or laboratory balances, are precision weighing instruments used in laboratories to determine the mass of substances with high accuracy. They range from analytical balances with high readability and enclosed draft shields to general precision balances and microbalances. Most Laborwaagen are electronic and rely on load cells to convert weight into an electrical signal; some models use other sensing technologies. Readability typically ranges from about 0.1 mg for high‑end analytical balances to 1 mg for standard precision balances, while specialized microbalances can reach microgram sensitivity. Maximum capacity spans from a few grams to several hundred grams. Common features include tare and zero functions, unit options (grams, milligrams, etc.), draft protection, automatic or internal calibration, and data interfaces such as USB, RS‑232, or Bluetooth.

These instruments are used for preparing reagents, formulation, sample preparation, and quality control in chemistry, biology, pharmaceutics, and education. They require careful handling, minimization of air currents, and regular calibration with certified weights to maintain accuracy. In many jurisdictions, devices used for trade are subject to legal metrology and may require certification; laboratory balances used for research or QA are typically governed by internal calibration procedures and traceability to national or international standards.

Maintenance and operation emphasize regular cleaning, calibration checks, and periodic servicing. The term Laborwaage denotes bench‑top scales designed for controlled environments, distinguishing them from general floor scales or kitchen scales.