Selecting an Analytical Balance on Amazon.com
An analytical balance measures the mass of an object to a high degree of precision and accuracy (0.0001g or better), and displays results digitally or exports data to a computer. Some analytical balances also measure weight. Applications include counting parts, general weighing, percent weighing, live animal weighing, and specific gravity determination.
An analytical balance has a cover with doors, called a draft shield, to prevent dust and airflow from affecting the measurement. To ensure accuracy, analytical balances must be occasionally calibrated. The balance is calibrated either internally or by using a weight. Even small vibrations can affect measurements. Because of this, analytical balances often incorporate stabilization and anti-vibration features to improve reading accuracy.
Analytical balances have a tare feature, meaning that the reading can be zeroed to compensate for gravitational differences, or when a pan is placed on the balance before the sample is added. Some digital analytical balances have an interface to export data to a computer or to a peripheral printer. Analytical balances can be manufactured or calibrated to meet industry standards required in some applications. Standards include GLP (Good Laboratory Practices), GMP (Good Manufacturing Practices), Ingress Protection (IP) ratings, and ISO compliances.
Capacity and readability are usually the primary considerations for choosing an analytical balance. Readability is the lowest significant digit that can be read on the display. Other features include data export and printing capabilities, internal or external calibration, accuracy, standards met, stabilization, time-to-reading, and digital features such as the display type and size. Measurement capabilities are also options, including basic mass determination, weighing, parts counting, and specific gravity determination. Security features and the type of weighing cell are also options for selecting an analytical balance.
Analytical balances are used in industries and applications where high precision and high accuracy are required, including pharmaceutical, food and beverage, and research applications.