1、Designation: D 4336 05Standard Test Methods forDetermination of the Output Per Stroke of a MechanicalPump Dispenser1This standard is issued under the fixed designation D 4336; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the yea
2、r of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 a mechanicalpum
3、p 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 practices and dete
4、rmine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 3890 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 pump dispensers
5、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 precision and
6、 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 specimens at 23 6 3 C(
7、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 236 3C (73 6 5.4
8、F) 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, with direct readi
9、ng 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 actual contai
10、ner 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 release to permit
11、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.1This test method is under the jurisdiction of ASTM Committee D10 onPackaging and is the direct responsibility of Subcommittee D10.3
12、3 on MechanicalDispensers.Current edition approved Oct. 1, 2005. Published November 2005. Originallyapproved in 1984. Last previous edition approved in 2001 as D 4336 01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annu
13、al 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.8.4 Prime the pump dispenser in accordance with TestMethod D 3890 by actuati
14、ng it until a full discharge of productoccurs.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.NOTE 2Care must be taken to use the full stroke on each actuation.8.7 Reweigh
15、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 used when taring of the packagewei
16、ght 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 recommended.9.2 Container, an appropri
17、ate 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 container.10.2 If the pump dispen
18、ser 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 pump dispenser in accordance with Tes
19、tMethod D 3890 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 the pump dispenser ten times by h
20、and 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 “New Weight” on the data sheet as “W
21、2”.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 weight.12. Report12.1 Report the
22、 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 dispensing feature, themean, maxi
23、mum, and minimum values of the weight per pumpstroke for all specimens tested.13. Precision and Bias13.1 PrecisionThe precision of Test Methods D 4336 ishighly dependent on the particular pump tested. One laboratoryhas investigated one particular fine mist pump and a hair spraywith three replicate t
24、ests 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 variability betweenreplicate tests. U
25、sers 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 and reproducibility is notpractica
26、ble.13.2 BiasTest Methods D 4336 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 in connection with any item ment
27、ionedin 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 responsible technical committee
28、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 careful consideration at a meeting
29、 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 International, 100 Barr Harbor Drive, PO B
30、ox 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).D4336052
