ASTM D6536/D6536M-18

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
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Designation: D6536/D6536M − 00 (Reapproved 2010) D6536/D6536M − 18
Standard Test Method Practice for
Measuring the Dip Tube Length of a Mechanical Pump
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Dispenser
This standard is issued under the fixed designation D6536/D6536M; 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.
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ε NOTE—Units information was editorially revised in December 2010.
1. Scope
1.1 This test method practice covers the measurement technique for a dip tube of a mechanical pump dispenser.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.3 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 safety, health, and healthenvironmental 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.
2. Significance and Use
2.1 This test method practice is to be used to measure the length of a specified dip tube from the bottom of the sealing surface
to the end of the dip tube in a mechanical pump dispenser.
2.2 This test method practice is to be used to measure the exposed length of a specified dip tube of a mechanical pump dispenser.
3. Apparatus
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3.1 Thin Metal Ruler, with minimum gradients of 1 mm or ⁄16 in., or both, along with a zero index at the end of the ruler.
3.2 Calipers.
4. Procedure
TEST METHOD PRACTICE “A”—MEASUREMENT OF OVERALL DIP TUBE LENGTH
NOTE 1—This test method practice is used when the exposed sealing surface of the mechanical pump dispenser is large enough to measure from.
4.1 While holding the mechanical pump dispenser with its axis in a horizontal plane, place the zero index end of the ruler against
the bottom of the seal surface. Fig. 1—dimension “X.”
4.2 If needed, straighten the dip tube out so that it is parallel with the length of the ruler.
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4.3 Measure the overall length of the dip tube to within a full millimetre or ⁄16 in. length.
4.4 Record the length measured in 5.1.
TEST METHOD PRACTICE “B”—MEASUREMENT OF EXPOSED DIP TUBE LENGTH
NOTE 2—This test method practice is used in all applications.
4.5 While holding the mechanical pump dispenser with its axis in a hor
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