ASTM E1043-00(2022)

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.
Designation: E1043 −00 (Reapproved 2022)
Standard Specification for
Pipets, Milk and Cream Examination
This standard is issued under the fixed designation E1043; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.2 Type II—Milk pipet, Babcock.
3.1.2.1 Type II A—Milk pipet, Babcock variation.
1.1 This specification covers miscellaneous pipets suitable
3.1.2.2 Type II B—Milk pipet, Babcock variation.
for use in milk and cream testing procedures.
3.1.3 Type III—Cream pipet.
1.2 The values stated in SI units are to be regarded as
3.1.3.1 Type III A—Cream pipet, additional size.
standard. No other units of measurement are included in this
3.1.4 Type IV—Milk diluting pipet.
standard.
3.1.4.1 Type IV A—Milk diluting pipet, additional sizes.
1.3 This international standard was developed in accor- 3.1.5 Type V—Milk diluting pipet.
dance with internationally recognized principles on standard-
3.1.6 Type VI—Milk pipet, Gerber.
ization established in the Decision on Principles for the
4. Material and Annealing
Development of International Standards, Guides and Recom-
4.1 Pipets shall be made of high quality apparatus glass,
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee. suitable in all respects for the purpose intended.
4.2 Maximum residual thermal stress shall conform to
2. Referenced Documents
Specification E671.
2.1 ASTM Standards:
5. Style and Design
E542 Practice for Calibration of Laboratory Volumetric
Apparatus 5.1 Type I, Breed and Brew Pipet (see Note 1)—Style and
design of capillary pipets shall be in strict conformance with
E671 Specification for Maximum Permissible Thermal Re-
sidual Stress in Annealed Glass Laboratory Apparatus Fig. 1, Type I. Pipets shall be without bulb, and shall be
suitable for use in the direct count method of milk examination
E920 Specification for Commercially Packaged Laboratory
Apparatus in conformance with the test procedures described in the 14th
E921 Specification for Export Packaged Laboratory Appa- edition of Standard Methods for the Examination of Dairy
ratus Products for pipet and slide method. The pipet shall be
E1133 Practice for Performance Testing of Packaged Labo- calibrated to deliver, when blown out, 0.01 6 0.001 cm of
ratory Apparatus for United States Government Procure- milk having a specific gravity of 1.032 at 20 °C. Tips shall be
ments blunt, ground, or polished to discharge milk cleanly.
E1157 Specification for Sampling and Testing of Reusable
NOTE 1—Type I pipets (5.1), before being used in New York, must be
Laboratory Glassware
submitted to the Director of the State Ford Laboratory, Albany, NY, for
examination.
3. Classification
5.2 TypeII,MilkPipet—MilkpipetsshallbeBabcockpipets
3.1 Pipets covered by this specification shall be of the
suitablefortestingthebutterfatcontentofmilk.Theendsshall
following types:
be at right angles to the axis. The bulb shall be symmetrical.
3.1.1 Type 1—Breed and brew pipet.
The tip shall taper slightly over the terminal 5 to 20 cm , but
the inside diameter at the end must be able to deliver within 5
to 8 s when filled with water. The end shall be fire-polished.
This specification is under the jurisdiction of ASTM Committee E41 on
The pipet shall be calibrated to contain 17.6 6 0.05 cm of
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
water at 20 °C, when tested in accordance with Practice E542.
Laboratory Ware and Supplies.
The pipet shall be marked to indicate that it contains 17.6 cm
Current edition approved Jan. 1, 2022. Published February 2022. Originally
approved in 1985. Last previous edition approved in 2016 as E1043 – 00(2016).
at 20 °C. The pipet shall be in strict conformance with Fig. 1,
DOI: 10.1520/E1043-00R22.
Type II.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on American Public Health Assoc., Standard Methods for the Examination of
the ASTM website. Dairy Products, 14th edition.
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E1043 − 00 (2022)
FIG. 1 Pipets, Milk and Cream Examination
5.2.1 Type II A, Milk Pipet—Same as Type II (5.2) except 5.3.1 TypeIIIA,CreamPipet—SimilartoTypeIII,however,
marked “Sealed” for use in states requiring this special
the pipet shall be calibrated to deliver 18 6 0.20 cm at 20°C
marking. (Alabama, Georgia, Mississippi, New Mexico, North
when used as described in 5.3. The pipet shall conform with
Dakota, Oregon, Tennessee, Washington, and Wisconsin.)
Fig. 1, Type III A.
5.2.2 TypeIIB,MilkPipet—SimilartoTypeII,however,the
5.4 TypeIV,MilkDilutingPipet (see Note 2)—Milk diluting
pipet shall be calibrated to deliver 17.6 6 0.
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