ASTM D3890-05(2010)
(Test Method)Standard Test Method for Number of Strokes to Prime a Mechanical Pump Dispenser
Standard Test Method for Number of Strokes to Prime a Mechanical Pump Dispenser
SIGNIFICANCE AND USE
This test method can be used to visually compare priming characteristics of different pump dispensers and different products.
This test method is suitable for establishing specifications for both the pump dispenser and the final package.
SCOPE
1.1 This test method covers the determination of the number of actuations required to prime a pump dispenser (spray and flow types) with a consumer-type product.
1.2 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 the applicability of regulatory limitations prior to use.
General Information
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Standards Content (Sample)
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Designation: D3890 − 05 (Reapproved 2010)
Standard Test Method for
Number of Strokes to Prime a Mechanical Pump Dispenser
This standard is issued under the fixed designation D3890; 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 6. Test Specimens
1.1 This test method covers the determination of the number 6.1 For each test specimen, select a container to which the
of actuations required to prime a pump dispenser (spray and pump dispenser will be attached during the test. Since the dip
flow types) with a consumer-type product. tube length affects the number of strokes to prime, the actual
bottle of the final package is recommended for testing.
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
7. Procedure
responsibility of the user of this standard to establish appro-
7.1 Fill each container with the product to be tested at the
priate safety and health practices and determine the applica-
actual level of the final package target weight.
bility of regulatory limitations prior to use.
7.2 Attachthepumpdispensersecurelytothecontainer.The
2. Significance and Use
pump should be in the off, locked, or closed position.Take care
2.1 This test method can be used to visually compare not to actuate the pump dispenser during this step.
priming characteristics of different pump dispensers and dif-
NOTE 1—If the actuator is placed onto the pump after the pump has
ferent products.
been secured onto the container, then report this additional stroke in the
final results in 8.1.
2.2 This test method is suitable for establishing specifica-
NOTE 2—If an actuation is required when opening or unlocking the
tions for both the pump dispenser and the final package.
pump, then report this additional actuation in the test report discussed in
8.1.
3. Apparatus
7.3 If the pump dispenser is equipped with an overcap or
3.1 No apparatus is required, although a mechanical device
locking feature, remove or release the feature to permit the
for actuating the pump dispenser may be used.
pump dispenser to be in the operable mode.
4. Sampling 7.4 If the pump dispenser has a variable output-per-stroke
feature, make an appropriate adjustment to achieve the desired
4.1 Select an appropriate number of dry, unused pump
output-per-stroke at this time. Report this desired dosage in
dispensers at random for the precision and accuracy desired.A
8.1.
number of ten test specimens are recommended, but a mini-
mum of three is acceptable. 7.5 Actuate the pump dispenser to its fullest extent with
smooth, firm, and even pressure. Allow the pump mechanism
5. Conditioning
to fully return before beginning the next stroke.
5.1 If possible, condition the test specimens at 23 6 3°C (73
NOTE 3—Depending on the venting system, some mechanical pump
6 5.4°F) for not less than 4 h. If the test specimens are not
dispensers can have variation in the number of strokes-to-prime due to the
time that the priming vent is opened. It is suggested that a rate of 90 6 15
conditioned at the recommended temperature, this should be
strokes per minute be used. For some viscous products, this rate may be
noted in the test report discussed in 8.1.
too fast for the mechanical pump dispenser to fully return. If the rate of
5.2 Test pumps should be tested no sooner than 24 h after actuation is outside of this range—faster or slower, report in 8.1.
assembly when possible. If the pumps are not conditioned at
7.6 Record the number of full strokes until the first full
the recommended time, this should be noted in the test report
discharge of product is observed.
discussed in 8.1.
NOTE 4—
...
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