Readability is the smallest mass difference that can still be read on a balance. For example, in the case of an analytical balance, the readability is 0.0001 g.

The ability of a weighing instrument to display corresponding results under constant test conditions, when the same load is repeatedly placed onto the weighing pan in the same manner. In general, the standard deviation or the difference between the largest and the smallest result for a defined number of measurements is used to specify this quantity.

Some laboratory balances are equipped with an internal motorized calibration function. Internal calibration can be even simpler if the balance is equipped with the isoCAL feature, which automatically triggers internal calibration when environmental conditions change. This feature is very convenient to have in micro, semi-micro, analytical or precision scales. Depending on the readability of the balance, usually for balances with 4, 5, 6 and 7 digits, the clock is triggered every four hours, for balances with a lower resolution every six hours. However, external calibration is also recommended from time to time. External calibration requires more effort on the part of the scale user. If the calibration must be traceable for the needs of the ISO standard or to meet other requirements, you can calibrate your measuring instruments in our accredited calibration laboratory.

Resolution is a term that has not yet been precisely standardized. It is commonly used to express the quotient of the maximum capacity and the readability (“The balance has a resolution of 100,000 digits”) or for readability (“The balance has a resolution of 0.1 g”).

Stabilization time is the time between the complete placement of an object/sample on the weighing pan and the display of the final result. It can be influenced by setting the appropriate digital filter parameters.

Balances made with PBT plastic parts are chemical resistant and can be cleaned using acetone. Balances that have plastic parts made of ABS can be cleaned with a damp cloth soaked in water. Be sure to wipe the balance with a soft, dry cloth after cleaning.

Laboratory balances and Sartorius balances can be used from 5 degrees to 40 degrees. The most important thing is that the balance has achieved internal adjustment for a certain ambient temperature. If it changes, the balance needs to be adjusted accordingly. A constant temperature is always desirable. It is best to set the isoCAL function to automatic mode. In this way, the balance will always correspond to a specific purpose.

The United States Pharmacopeia (USP) Chapter 41 does not reference minimum sample weight any longer, rather it defines repeatability and accuracy, which is of crucial importance to determine the operating range of a balance. So, the term minimum weight has been replaced with operating range minimum. An accuracy of 0.10% is used to calculate this figure.