ASTM_D_6536_-_D_6536M_-_18.pdf

Designation:D6536/D6536M18Standard Practice forMeasuring the Dip Tube Length of a Mechanical PumpDispenser1This standard is issued under the fixed designation D6536/D6536M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the measurement technique for adip tube of a mechanical pump dispenser.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Significance and Use2.1 This practice is to be used to measure the length of aspecified dip tube from the bottom of the sealing surface to theend of the dip tube in a mechanical pump dispenser.2.2 This practice is to be used to measure the exposed lengthof a specified dip tube of a mechanical pump dispenser.3.Apparatus3.1 Thin Metal Ruler,with minimum gradients of 1 mm or116in.,or both,along with a zero index at the end of the ruler.3.2 Calipers.4.ProcedurePRACTICE“A”MEASUREMENT OF OVERALLDIP TUBE LENGTHNOTE1This practice is used when the exposed sealing surface of themechanical pump dispenser is large enough to measure from.4.1 While holding the mechanical pump dispenser with itsaxis in a horizontal plane,place the zero index end of the ruleragainst the bottom of the seal surface.Fig.1dimension“X.”4.2 If needed,straighten the dip tube out so that it is parallelwith the length of the ruler.4.3 Measure the overall length of the dip tube to within afull millimetre or116in.length.4.4 Record the length measured in 5.1.PRACTICE“B”MEASUREMENT OF EXPOSED DIPTUBE LENGTHNOTE2This practice is used in all applications.4.5 While holding the mechanical pump dispenser with itsaxis in a horizontal plane,place the zero index end of the ruleragainst the bottom end of the body.Fig.1dimension“Z.”4.6 If needed straighten the dip tube out so that it is parallelwith the length of the ruler.4.7 Measure the exposed length of the dip tube to within afull millimetre or116in.length.4.8 Record the length measured in 5.1.5.Report5.1 Report the following information:5.1.1 Type of mechanical pump dispenser,5.1.2 Dip tube length measured,and5.1.3 Practice used.6.Precision and Bias6.1 PrecisionThe precision of this practice is within arange of plus or minus 1 mm or116in.from the specifiedlength depending on the unit of measure used:millimetres orinches.An examination of the results of dip tube lengthmeasurements from _ technicians in one lab found that tenpumps measured under Practice“A”had a range in lengthspecified from _ in.long.Data is currently being gathered.1This practice is under the jurisdiction of ASTM Committee F02 on PrimaryBarrier Packaging and is the direct responsibility of Subcommittee F02.30 onMechanical Dispensers.Current edition approved May 1,2018.Published June 2018.Originallyapproved in 2000.Last previous edition approved in 2010 as D6536/D6536M 00(2010)1.DOI:10.1520/D6536_D6536M-18.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 6.2 BiasThis practice has no bias because an acceptedreference or referee value is not available.7.Keywords7.1 dip tube length;dip tube measurement;mechanicalpump dispenserASTM 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 such rights,are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised,either reapproved