Metrology: The Science of Measurement
Every measurement known to science has a level of uncertainty associated with it. The lower the uncertainty, the better the measurement quality, and the greater the accuracy and reliability of the measurement process. Conversely, high measurement uncertainty signifies a poor measurement process, and a high level of “doubt” about the measurement itself.
To reduce measurement uncertainty, it’s necessary to identify the sources of that uncertainty, and to quantify these factors and report them along with the measurement result. This is the “measurement uncertainty” or MU value. In pipette calibration, factors like altitude, barometric pressure, air temp, air flow, vibration and humidity all affect MU. Dry conditions and high air flow, for example, increase evaporation rates and impact test equipment measurement capability. A test balance that cannot stabilize properly will produce poor measurement results. The more tightly these factors are controlled, the smaller the MU and the more accurate the resulting pipette calibration.
At Transcat, we understand in detail the impact these environmental factors have on pipette calibration measurement accuracy and uncertainty. That is why your pipettes are always calibrated in a tightly controlled laboratory environment, precisely designed to minimize all the influences that can affect MU, and therefore minimizing pipette inaccuracy and imprecision. As a result, our pipette calibrations are extremely accurate, thoroughly reliable and fully audit-ready for you.