Here are some key details about lab analytical electronic balances:
Design: Analytical electronic balances are designed with a high level of precision and sensitivity, typically capable of measuring masses in the sub-milligram range (0.1 mg to 0.0001 mg). They consist of a weighing pan or platform, a weighing chamber with a glass or plastic draft shield to prevent air currents from affecting measurements, and a digital display for reading measurements.
Measurement Units: These balances can measure mass in various units, including grams (g), milligrams (mg), micrograms (µg), and even nanograms (ng), depending on the model and sensitivity.
Calibration: Analytical balances require regular calibration to ensure accurate and reliable measurements. Calibration is typically performed using calibrated weights of known mass.
Sensitivity: Analytical balances are highly sensitive to external factors such as air currents, vibrations, temperature changes, and electromagnetic interference. They are often placed in a stable environment with minimal disturbances during use.
Features: Modern analytical electronic balances may include features such as:Tare function: Allows the user to zero out the weight of containers or additional items placed on the balance before measuring the sample.
Automatic calibration: Some models have built-in calibration routines that can be triggered automatically at regular intervals or when needed.
Data connectivity: Some balances can be connected to computers or data logging devices for data recording, analysis, and storage.
Weighing modes: Balances may offer different weighing modes such as standard weighing, piece counting, percent weighing, and density determination.
Applications: Analytical electronic balances are used in various laboratory applications, including chemical analysis, pharmaceutical research, quality control, environmental testing, and academic research where precise measurements of mass are required.
Care and Maintenance: Proper care of analytical balances includes regular cleaning of the weighing pan and chamber, handling samples with care to avoid spills or contamination, and following manufacturer’s guidelines for calibration and maintenance procedures.