Ultra Micro Balances

Ultra microbalances read below one microgram, the finest weighing available, used for trace gravimetry, filter analysis and reference mass work.

Sartorius supplies this range. At this resolution the instrument is rarely the limiting factor. Air buoyancy on the sample, adsorbed surface moisture, static charge and the smallest air current or vibration all produce errors larger than the specification. Successful use requires a dedicated vibration-isolated bench, close control of room temperature and humidity, an ioniser and handling exclusively with tongs. Capacity is deliberately small, so confirm your sample vessel tare fits, and expect long settling times per reading.