A high precision balance is an essential laboratory instrument for accurate weighing in a wide variety of scientific, industrial and academic contexts. They are used in many laboratories, including pharmaceutical and medical labs, food and plastic manufacturing, calibration and quality assurance labs and more. Analytical and precision balances play a crucial role in upholding acceptable good laboratory practices (GLP) and producing precise and consistent results.
In order to select the appropriate analytical or precision balance for a given weighing application, several factors should be taken into consideration. These include the desired weighing capacity, level of precision needed, environmental conditions and budget constraints.
Accuracy is the ability of the weighing device to produce accurate and consistent measurements in all conditions. This is usually measured by determining the amount of deviation from a perfect linear relationship between the mass applied to the balance and the resulting measurement value. The accuracy of an analytical or precision balance is also determined by its repeatability and reproducibility. To evaluate these two qualities, a stable and homogenous sample should be weighed on numerous analytical or precision balances on multiple occasions, and the resulting measurement values should be compared. A higher level of agreement between the measured values indicates greater precision and repeatability.
Regular calibration of an analytical or precision balance is necessary to maintain its performance and ensure the integrity of the weighing results. Calibration involves loading the balance with a known quantity, such as a calibration weight, and adjusting the mechanism in order to ensure it is functioning properly. Newer balances often feature an internal calibration mechanism, which eliminates the need to purchase and store a separate calibration weight. high precision balance