1、Designation: D4336 05 (Reapproved 2010)Standard Test Methods 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, in the case of r
2、evision, 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 the measurement of the meanquantity-by-weight of liquids dispensed from
3、a mechanicalpump dispenser (spray or flow type) with a consumer-typeproduct on each actuation.1.2 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health pra
4、ctices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D3890 Test Method for Number of Strokes to Prime aMechanical Pump Dispenser3. Significance and Use3.1 This test method can be used to compare the output perstroke of different pu
5、mp dispensers for the purpose of estab-lishing dosage and use instructions for products of consumerusage.3.2 This test method is suitable for establishing specifica-tions for both the pump dispenser and the final package.4. Sampling4.1 Select an appropriate number of pump dispensers atrandom for the
6、 precision and accuracy desired.Anumber of tentest specimens are recommended, but a minimum of three isacceptable.5. Test Specimens5.1 Test specimens shall be clean pump dispensers with diptubes assembled in the same manner as in production.6. Conditioning6.1 If possible, condition the test specimen
7、s 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 benoted in the test report discussed in 12.1.6.2 If the test specimens have been newly-made at the timeof the test, it is recommended that the test specimens age at 23
8、6 3C (73 6 5.4F) for 24 h before beginning the test. If thetest specimens are not allowed to age for 24 h, then it shouldbe noted in the test report as discussed in 12.1.GRAVIMETRIC METHOD #1This method is to be used when taring of the packageweight is wanted or possible.7. Apparatus7.1 Balance, wit
9、h direct reading to 0.01 g. Top-loading oranalytical style is recommended.NOTE 1For applications requiring greater accuracy, a top-loading oranalytical style balance with direct reading to 0.001 g is recommended.7.2 Container, an appropriate container for the pump dis-penser under test; however, the
10、 actual container to be used onthe final package is recommended.8. Procedure8.1 Fill the container with product to the level to be seen inthe final package and secure the mechanical pump dispenser tothe container.8.2 If the pump dispenser is equipped with an overcap orlocking feature, remove or rele
11、ase to permit the pump dis-penser to be in the operable mode.8.3 If the pump dispenser has a variable dosage feature,make an appropriate adjustment to the desired dosage at thistime.8.4 Prime the pump dispenser in accordance with TestMethod D3890 by actuating it until a full discharge of productoccu
12、rs.8.5 Place the package on the balance and tare the weight tozero.8.6 Actuate the pump dispenser ten times by hand at the rateof 60 to 120 (90 6 15 preferred) strokes per minute.1This test method is under the jurisdiction of ASTM Committee D10 onPackaging and is the direct responsibility of Subcomm
13、ittee D10.33 on MechanicalDispensers.Current edition approved Oct. 1, 2010. Published March 2011. Originallyapproved in 1984. Last previous edition approved in 2005 as D4336 05. DOI:10.1520/D4336-05R10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Serv
14、ice at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.NOTE 2Care must be taken to use the full str
15、oke on each actuation.8.7 Reweigh the package and record the value to the nearest0.01 or 0.001 g as appropriate for the balance used and recordthe weight on the data sheet.8.8 Repeat 8.1-8.7 for each pump dispenser selected fortesting in accordance with 5.1.GRAVIMETRIC METHOD #2This method is to be
16、used when taring of the packageweight is not wanted or not possible.9. Apparatus9.1 Balance, with direct reading to 0.01 g. Top-loading oranalytical style is recommended.NOTE 3For applications requiring greater accuracy, a top-loading oranalytical style balance with direct reading to 0.001 g is reco
17、mmended.9.2 Container, an appropriate container for the pump dis-penser under test; however, the actual container to be used onthe final package is recommended.10. Procedure10.1 Fill the container with product to the level to be seen inthe final package and secure the mechanical pump dispenser tothe
18、 container.10.2 If the pump dispenser is equipped with an overcap orlocking feature, remove or release to permit the pump dis-penser to be in the operable mode.10.3 If the pump dispenser has a variable dosage feature,make an appropriate adjustment to the desired dosage to betested.10.4 Prime the pum
19、p dispenser in accordance with TestMethod D3890 by actuation until a full discharge of productoccurs.10.5 Weigh the filled package with the pump dispenserinstalled to the nearest 0.01 or 0.001 g as appropriate for thebalance used and record the “Initial Weight” on the data sheetas “W1”.10.6 Actuate
20、the pump dispenser ten times by hand at therate 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 thenearest 0.01 or 0.001g as appropriate for the balance used andrecord the “Ne
21、w Weight” on the data sheet as “W2”.10.8 Repeat 10.1-10.7 for each pump dispenser selected fortesting in accordance with 5.1.11. Calculation for Gravimetric Method #211.1 After each series of weighings, calculate the following:W1W2!105 output per stroke average!where:W1 = initial weight, andW2 = new
22、 weight.12. Report12.1 Report the following information:12.1.1 Description of the mechanical pump dispenser andproduct tested.12.1.2 Number of specimens tested.12.1.3 Mean, maximum, and minimum values of the weightper pump stroke for all test specimens tested, and12.1.4 For pumps with an adjustable
23、dispensing feature, themean, maximum, and minimum values of the weight per pumpstroke for all specimens tested.13. Precision and Bias13.1 PrecisionThe precision of Test Methods D4336 ishighly dependent on the particular pump tested. One laboratoryhas investigated one particular fine mist pump and a
24、hair spraywith three replicate tests using Gravimetric Method #1, yield-ing an average output per stroke of 0.174 gr. with a range of0.177 to 0.172 gr. and a standard deviation of 0.0026 gr. Othermechanical pump dispensers will have other averages of outputper stroke and will have more or less varia
25、bility betweenreplicate tests. Users of this test method are suggested toreference historical files of previous tests of similar pumps foran estimate of within laboratory repeatability. The committeebelieves that because of this varying pump style dependency,further investigation of repeatability an
26、d reproducibility is notpracticable.13.2 BiasTest Methods D4336 has no bias because anaccepted reference or referee value is not available.14. Keywords14.1 dosage; mechanical pump dispenser; output-per-strokeASTM International takes no position respecting the validity of any patent rights asserted i
27、n 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 such rights, are entirely their own responsibility.This standard is subject to revision at any time by the r
28、esponsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive car
29、eful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM Internation
30、al, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D4336 05 (2010)2
