When measuring the volume of liquids, balloon joe, burette, tape measure or pipette are generally used. There are many types of pipettes used in liquid volume measurements today. Of these, the most graded, automatic and single-use pipettes are used. Automatic pipettes are widely used in the industry as they are very practical in terms of usage. Pipettes are used with a pipette pump or puar. Liquid should not be drawn to the pipette in any other way. Tools such as puar or pipette pump have been developed to fill the pipette with liquid. Reciprocating pipettes and micropipettes are preferred because they are practical and time-saving during volume measurements in laboratories, especially for precise measurements.

When measuring the volume in cylindrical glass containers using a pipette, the readings are different depending on the properties of the liquid, for example whether it is colored or unremarkable or whether the liquid is transparent.

The laboratories providing calibration, analysis and testing services are accredited in accordance with TS EN ISO / IEC 17025 General Requirements for the Competence of Testing and Calibration Laboratories. In advanced laboratories, reciprocating pipette (micropipette) calibration is performed within the scope of calibration studies. During these studies, standards and test methods published by local and foreign organizations are taken as basis. A few standards considered in this regard are:

• TS EN ISO 648 Laboratory glassware - Single volume pipettes
• TS EN ISO 8655-2 Laboratory equipment - Piston metered materials - Part 2: Reciprocating pipettes
• TS EN ISO 835 Laboratory glassware - Partial pipettes
• TS 3702 Laboratory glassware - Pipettes - Color coding
• TS 10312 Laboratory glassware - Serological pipettes - Disposable
• TS 10313 Laboratory glassware - Micro pipettes - Disposable
• TS 10454 Laboratory glassware - Pasteur pipettes - Disposable