ASTM_D_6535_-_D_6535M_-_18.pdf

Designation:D6535/D6535M18Standard Practice forDetermining the Dip Tube Length of a Mechanical PumpDispenser1This standard is issued under the fixed designation D6535/D6535M;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 determination 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 determine the length of adip tube of a mechanical pump dispenser that extends to thebottom-corner of a container.2.2 This practice is to be used to determine the length of adip tube of a mechanical pump dispenser that extends to thebottom-center of a container.3.Apparatus3.1 Thin Metal Ruler,with minimum gradients of onemillimeter and/or116in.along with a zero index at the end ofthe ruler.3.2 Calipers.4.ProcedurePRACTICE“A”DIP TUBE LENGTHDETERMINATION TO THE BOTTOM-CORNER OFTHE CONTAINERNOTE1This practice is used when the dip tube of a mechanical pumpdispenser must extend to the bottom-corner of a container.4.1 Place the zero-index end of the ruler into the containeras shown in Fig.1.4.2 Turn the ruler so that the side of the ruler reaches as farinto the bottom-corner of the container as possible.NOTE2If the cross-sectional area of the container is not round,position the ruler into the farthest bottom-corner of the container.4.3 Adjust the ruler so that it is positioned through thecenter axis of the container opening.4.4 Measure the dip tube length to within 1 mm or116in.Ifthe measurement value is between the whole millimetre or116thgradient,use the larger value(that is,if measurement is 118.5mm,use 119 mm;or if measurement is 4-2132in.,use 4-1116in).4.5 If the dip tube measurement is in millimetres,subtract 1mm from the measured value.If the dip tube measurement is ininches,subtract116in.from the measured value.4.6 Record the net value(original value minus 1 mm or116in.).4.7 To verify the new dip tube specification,prepare asample mechanical pump dispenser with the newly-specifieddip tube length.4.8 Secure the mechanical pump dispenser to the container.4.9 Verify that the end of the dip tube is not closed-off bythe bottom or side of the container.4.10 To specify the exposed dip tube length,measure thelength of the exposed body as per dimension“Y”of Fig.2 andsubtract from the overall length as specified in 4.6.NOTE3If the container is not transparent,a section of the bottom ofthe container may need to be removed so that the position of the end of thedip tube may be viewed.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 D6535/D6535M 05(2010)1.DOI:10.1520/D6535_D6535M-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 PRACTICE“B”DIP TUBE LENGTHDETERMINATION TO THE BOTTOM-CENTER OFTHE CONTAINERNOTE4This practice is used when the dip tube of a mechanical pumpdispenser must extend to the bottom-center of a container.4.11 Place the zero-index end of the ruler into the containeras shown in Fig.3.4.12 Adjust the ruler so that it is positioned through thecenter axis of the container opening with the end of the ruler atthe bottom of the container.4.13 Measure the dip tube length to within 1 mm or116in.through the plane generated by the top of the containeropening.If the measurement