1、Designation: D4336 05 (Reapproved 2010)D4336 18Standard Test Methods Practice forDetermination of the Output Per Stroke of a MechanicalPump Dispenser1This standard is issued under the fixed designation D4336; the number immediately following the designation indicates the year oforiginal adoption or,
2、 in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 These test methods cover This practice covers the measurement of the mean quanti
3、ty-by-weight of liquids dispensed froma mechanical pump dispenser (spray or flow type) with a consumer-type product on each actuation.1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to est
4、ablish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use.1.3 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Pr
5、inciples for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D3890 Practice for Number of Strokes to Prime a Mechanical Pump Dispenser3. Significance an
6、d Use3.1 This test method practice can be used to compare the output per stroke of different pump dispensers for the purpose ofestablishing dosage and use instructions for products of consumer usage.3.2 This test method practice is suitable for establishing specifications for both the pump dispenser
7、 and the final package.4. Sampling4.1 Select an appropriate number of pump dispensers at random for the precision and accuracy desired. A number of ten testspecimens are recommended, but a minimum of three is acceptable.5. Test Specimens5.1 Test specimens shall be clean pump dispensers with dip tube
8、s assembled in the same manner as in production.6. Conditioning6.1 If possible, condition the test specimens at 23 6 3 C (73 6 5.4F) for not less than 4 h. If the test specimens are notconditioned at the recommended temperature, this should be noted in the test report discussed in 12.1.6.2 If the te
9、st specimens have been newly-made at the time of the test, it is recommended that the test specimens age at 23 63C (73 6 5.4F) for 24 h before beginning the test. If the test specimens are not allowed to age for 24 h, then it should be notedin the test report as discussed in 12.1.1 This test method
10、practice is under the jurisdiction ofASTM Committee F02 on FlexiblePrimary Barrier Packaging and is the direct responsibility of Subcommittee F02.30on Mechanical Pump Dispensers.Current edition approved Oct. 1, 2010May 1, 2018. Published March 2011June 2018. Originally approved in 1984. Last previou
11、s edition approved in 20052010 asD4336 05.D4336 05(2010). DOI: 10.1520/D4336-05R10.10.1520/D4336-18.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Doc
12、ument Summary page on the ASTM website.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. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM
13、recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1GRAVIMETR
14、IC METHOD #1This method is to be used when taringof the package weight is wanted or possible.7. Apparatus7.1 Balance, with direct reading to 0.01 g. Top-loading or analytical style is recommended.NOTE 1For applications requiring greater accuracy, a top-loading or analytical style balance with direct
15、 reading to 0.001 g is recommended.7.2 Container, an appropriate container for the pump dispenser under test; however, the actual container to be used on the finalpackage is recommended.8. Procedure8.1 Fill the container with product to the level to be seen in the final package and secure the mechan
16、ical pump dispenser to thecontainer.8.2 If the pump dispenser is equipped with an overcap or locking feature, remove or release to permit the pump dispenser tobe in the operable mode.8.3 If the pump dispenser has a variable dosage feature, make an appropriate adjustment to the desired dosage at this
17、 time.8.4 Prime the pump dispenser in accordance with Test Method D3890 by actuating it until a full discharge of product occurs.8.5 Place the package on the balance and tare the weight to zero.8.6 Actuate the pump dispenser ten times by hand at the rate of 60 to 120 (90 6 15 preferred) strokes per
18、minute.NOTE 2Care must be taken to use the full stroke on each actuation.8.7 Reweigh the package and record the value to the nearest 0.01 or 0.001 g as appropriate for the balance used and record theweight on the data sheet.8.8 Repeat 8.1 8.7 for each pump dispenser selected for testing in accordanc
19、e with 5.1.GRAVIMETRIC METHOD #2This method is to be used when taring ofthe package weight is not wanted or not possible.9. Apparatus9.1 Balance, with direct reading to 0.01 g. Top-loading or analytical style is recommended.NOTE 3For applications requiring greater accuracy, a top-loading or analytic
20、al style balance with direct reading to 0.001 g is recommended.9.2 Container, an appropriate container for the pump dispenser under test; however, the actual container to be used on the finalpackage is recommended.10. Procedure10.1 Fill the container with product to the level to be seen in the final
21、 package and secure the mechanical pump dispenser tothe container.10.2 If the pump dispenser is equipped with an overcap or locking feature, remove or release to permit the pump dispenser tobe in the operable mode.10.3 If the pump dispenser has a variable dosage feature, make an appropriate adjustme
22、nt to the desired dosage to be tested.10.4 Prime the pump dispenser in accordance with Test Method D3890 by actuation until a full discharge of product occurs.10.5 Weigh the filled package with the pump dispenser installed to the nearest 0.01 or 0.001 g as appropriate for the balanceused and record
23、the “Initial Weight” on the data sheet as “W1”.10.6 Actuate the pump dispenser ten times by hand at the rate of 60 to 120 (90 6 15 preferred) strokes per minute.NOTE 4Care must be taken to use the full stroke on each actuation.10.7 Reweigh the package and record the differences to the nearest 0.01 o
24、r 0.001g as appropriate for the balance used and recordthe “New Weight” on the data sheet as “W2”.10.8 Repeat 10.1 10.7 for each pump dispenser selected for testing in accordance with 5.1.D4336 18211. Calculation for Gravimetric Method #211.1 After each series of weighings, calculate the following:W
25、12W2!10 5output per stroke average!where:W1 = initial weight, andW2 = new weight.12. Report12.1 Report the following information:12.1.1 Description of the mechanical pump dispenser and product tested.12.1.2 Number of specimens tested.12.1.3 Mean, maximum, and minimum values of the weight per pump st
26、roke for all test specimens tested, and12.1.4 For pumps with an adjustable dispensing feature, the mean, maximum, and minimum values of the weight per pumpstroke for all specimens tested.13. Precision and Bias13.1 PrecisionThe precision of Test Methods Practice D4336 is highly dependent on the parti
27、cular pump tested. Onelaboratory has investigated one particular fine mist pump and a hair spray with three replicate tests using Gravimetric Method #1,yielding an average output per stroke of 0.174 gr. with a range of 0.177 to 0.172 gr. and a standard deviation of 0.0026 gr. Othermechanical pump di
28、spensers will have other averages of output per stroke and will have more or less variability between replicatetests. Users of this test method practice are suggested to reference historical files of previous tests of similar pumps for an estimateof within laboratory repeatability. The committee bel
29、ieves that because of this varying pump style dependency, furtherinvestigation of repeatability and reproducibility is not practicable.13.2 BiasTest Methods Practice D4336 has no bias because an accepted reference or referee value is not available.14. Keywords14.1 dosage; mechanical pump dispenser;
30、output-per-strokeASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of
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