ASTM D6534-05
(Test Method)Standard Test Method for Determining the Peak Force-to-Actuate a Mechanical Pump Dispenser
Standard Test Method for Determining the Peak Force-to-Actuate a Mechanical Pump Dispenser
ABSTRACT
This test method covers the procedures for determining the peak force-to-actuate of a mechanical pump dispenser. The apparatus required to perform the tests include a motorized compression tester or custom force-to-action machine, a device that can display the resulting force, and a means to rigidly hold the mechanical pump dispenser during testing. Appropriate machine operating and substance handling should be taken and calibration should be performed on the equipment before testing the clean, dry, and unused pump dispensers.
SCOPE
1.1 This test method covers the determination of the peak force-to-actuate, sometimes called force-to-actuate (FTA), of a mechanical pump dispenser.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only.
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 and health practices and determine in the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 5.
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Designation:D6534–05
Standard Test Method for
Determining the Peak Force-to-Actuate of a Mechanical
1
Pump Dispenser
This standard is issued under the fixed designation D6534; 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.
NOTE 1—Since the velocity during actuation will affect the FTA of
1. Scope
certain mechanical pump dispenser designs, care must be taken in
1.1 This test method covers the determination of the peak
selecting the correct type of equipment with the sufficient actuation
force-to-actuate, sometimes called force-to-actuate (FTA), of a
velocity.
mechanical pump dispenser.
4.2 A device connected to the compression tester that can
1.2 The values stated in SI units are to be regarded as the
display the resulting force in newtons (N) or pounds force (lbf)
standard. The inch-pound units given in parentheses are for
of 0.1 accuracy.
information only.
4.3 Ameans to rigidly hold the mechanical pump dispenser
1.3 This standard does not purport to address all of the
during testing (that is, glass bottle or a holding fixture; see Fig.
safety concerns, if any, associated with its use. It is the
1).
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Precautions
bility of regulatory limitations prior to use. Specific precau-
5.1 Appropriate handling considerations should be given to
tionary statements are given in Section 5.
flammable, toxic, caustic, or other potentially hazardous ma-
terials used.
2. Referenced Documents
5.2 Appropriate operating considerations should be taken
2
2.1 ASTM Standards:
with pinch points on the motorized compression tester.
D3890 Test Method for Number of Strokes to Prime a
5.3 Ensure that the exit orifice of the mechanical pump
Mechanical Pump Dispenser
dispenser is pointed away from the operator and other people.
5.4 Ensure that the motorized compression tester is properly
3. Significance and Use
calibrated.
3.1 This test method can be used to compare the peak
5.5 Actuation Rate for Finger Pumps—Care should be
force-to-actuate performance of different mechanical pump
taken when selecting the travel speed of the ram. For some
dispensers.
mechanical pump dispenser styles, the speed of actuation and
3.2 This test method can be used to determine the perceived
length of stroke can affect the peak force to actuate. As a rule
ease of use of a mechanical pump dispenser.
of thumb, mechanical pump dispensers with a stroke length of
3.3 This test method can be used to determine the peak
7 mm or greater should use an actuation velocity of 35 to 75
force-to-actuate of a mechanical pump dispenser.
mm per second, while mechanical pump dispensers with a
stroke length of less than 7 mm should use an actuation
4. Apparatus
velocity of 35 mm per second or less. Especially for fine mist
4.1 Motorized Compression Tester, or Custom Force-to-
spray pumps, the above mentioned rates are preferred. A
Action Machine, with the capability to actuate the mechanical
different rate may be used; however, the true force-to-actuate
pump dispenser at a constant velocity and adjustable stroke
during use may not be measured. The actuation rate used
lengths while accurately measuring the resulting force (that is,
should be recorded in 10.
load cell).
5.6 Actuation Rate for Trigger Pumps—Actuation rate for
trigger sprayers to be 90 strokes per min.
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This test method is under the jurisdiction of ASTM Committee D10 on
Packaging and is the direct responsibility of Subcommittee D10.33 on Mechanical
6. Sampling
Dispensers.
6.1 Select an appropriate number of dry, unused pump
Current edition approved Oct. 1, 2005. Published November 2005. Originally
approved in 2000. Last previous edition approved in 2000 as D6534 – 00. DOI:
dispensers at random for the precision and accuracy desired.A
10.1520/D6534-05.
number of ten test specimens are recommended, but a mini-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
mum of three is acceptable.
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
the ASTM website.
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D6534–05
9.3 Define and document the relevant data of:
9.3.1 Stroke length, if it pertains,
9.3.2 Actuation rate,
9.3.3 Number of strokes,
9.3.4 Description of pump,
9.3.5 Product tested.
9.3.6 Fortriggerpumps,documenttheaveragecontactpoint
d
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