This specification covers requirements of precision (Class A) and general purpose (Class B) grade glass measuring pipets used for volume measurement of liquids. Pipets covered by this specification may be of the standard taper tip type (Style 1) or of the long taper tip type (Style 2), which is only available for Class B pipets, and are available in nine different capacities. The pipet shall be manufactured from annealed borosilicate glass into a straight, one-piece construction that is free of defects which may distort the appearance of the liquid surface. The pipets shall be marked wit permanent and legible graduation lines lying in a plane perpendicular to the vertical axis of the pipet by etching the glass and filling the etched area with a permanent pigment, by etching through a vertical colored stripe fused into the glass, by applying a stain fired into the glass without etching, or by applying an enamel fired into the glass without etching. In addition, the pipet shall also be color coded with one or two color bands. Pipets shall undergo testing such as specified for reusable laboratory glassware.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers requirements for glass measuring pipets of precision and general purpose grades, used in measuring volumes of liquids.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E438 Specification for Glasses in Laboratory Apparatus
E542 Practice for Calibration of Laboratory Volumetric Apparatus
E671 Specification for Maximum Permissible Thermal Residual Stress in Annealed Glass Laboratory Apparatus
E694 Specification for Laboratory Glass Volumetric Apparatus
E920 Specification for Commercially Packaged Laboratory Apparatus
E921 Specification for Export Packaged Laboratory Apparatus
E1133 Practice for Performance Testing of Packaged Laboratory Apparatus for United States Government Procurements
E1157 Specification for Sampling and Testing of Reusable Laboratory Glassware
E1273 Specification for Color Coding of Reusable Laboratory Pipets
glass; measuring; pipets ;
ICS Number Code 71.040.20 (Laboratory ware and related apparatus)
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