ASTM E0672-87R24
Standard Specification for Disposable Glass Micropipets
| Označení normy: | ASTM E0672-87R24 |
| Vydáno: | 01.11.2024 |
| Status: | Active |
| Počet stran: | 5 |
| Sekce: | 14.04 |
| Označení: | disposable; glass; micropipets; |
| ASTM označení: | ASTM E672 |
| Nahrazuje: | E0672-87R19E01 |
This specification covers two different types of disposable glass micropipets, calibrated “to contain,” used in measuring microlitre volumes of liquids. The pipets made to these specifications shall be fabricated from borosilicate glass (Type I, Class A or B) or soda lime glass (Type II). Pipets shall be of one piece construction and shall meet the specified requirements for shape, dimensions, and capacity. The calibration line and identification markings such as color code marking are illustrated. The methods of reading and setting a liquid meniscus and a mercury meniscus are detailed. Capacity test shall be performed and calculation of micropipet volume shall be taken using the given formula.
1.1 This specification covers two different types of disposable micropipets, calibrated “to contain,” used in measuring microlitre volumes of liquids.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 The following precautionary caveat pertains only to paragraph 9.1.1 of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.