ASTM_D_3063_-_94.pdf

Designation:D 3063 94Standard Test Method forPressure in Glass Aerosol Bottles1This standard is issued under the fixed designation D 3063;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year 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 This test method covers the determination of pressure inglass aerosol bottles.1.2 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of whoever uses this standard to consult andestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:D 3060 Test Method for Pressure Drop Rate of CompressedGas-Propelled Products2D 3074 Test Methods for Pressure in Metal Aerosol Con-tainers2E 1 Specification for ASTM Thermometers33.Significance and Use3.1 Aerosols packaged in containers with a capacity of 4 oz(116 cm3)or less are exempt from the pressure regulations ofthe Department of Transportation(DOT).Since most glassaerosol bottles have a capacity of 4 oz or less,they have nopressure restrictions,and therefore there is no reason tomeasure the pressure at 130F(54C).However,for safetyreasons,the aerosol industry has generally limited the pressurein coated glass bottles to 25 psi(172 kPa)at 70F(21C),andin uncoated bottles to 15 psi(103 kPa).3.2 If aerosol products are packaged in glass containerslarger than 4 oz(116 cm3),the pressure must not exceed 25 psi(172 kPa)at 70F(21C).Otherwise,a special permit must beobtained because there is no provision in the DOT regulationsfor glass aerosol bottles where the capacity of the bottle islarger than 4 oz,and the pressure exceeds 25 psi at 70F.3.3 For the preceding reasons,it is necessary to have anaccurate test method for measuring the pressure in glassaerosol bottles at 70F(21C).In addition,this test methodshould be suitable for quality control.4.Apparatus4.1 Water Bath,constant-temperature,having an automatictemperature control with a maximum temperature variation of60.5F(60.25C).Stirring should be provided to maintain auniform temperature.The bath should have sufficient capacityfor both glass bottles and metal containers(see MethodsD 3074).4.2 Thermometer,12F,conforming to Specification E 1,orequivalent accurate thermometer with 0.5F(0.25C)gradua-tions.4.3 Pressure Gage,with a range from 0 to 200 psi(0 to 1.37MPa).The gages used for metal aerosol containers are alsosatisfactory for glass aerosol bottles.In some instances,it maybe desirable to use a gage with a smaller range to obtain greateraccuracy.4.4 Pressure Gage Assembly(Fig.1),equipped with twovalves.The prepressurizing valve(a)may be used either forprepressurizing the gage,or as an outlet for reducing thepressure in the gage.The gage valve(b)separates the aerosolcontainer from the gage assembly.4.4.1 Two types of adapters are suitable for making aconnection with the valve stem as follows:4.4.1.1 The tapered adapter(Fig.1)4achieves a gastightconnection by insertion in the valve stem bore.4.4.1.2 The second type of adapter5forms a seal around thetop of the valve stem by means of a gasket.4.5 Safety Shield,transparent.4.6 Gloves,heavy leather.5.Reagents5.1 Inert gases are necessary for prepressurizing the gage.The following are commonly used:5.1.1 Compressed Air.5.1.2 Nitrogen(N2).6.Sampling6.1 Samples shall be selected from production or laboratory.7.Preparation of Apparatus7.1 Attach the hose from the compressed gas supply to theprepressurizing valve and allow a slow stream of gas to flowthrough the apparatus,to make certain that the apparatus is notclogged at any point.1This test method is under the jurisdiction of ASTM Committee D-10 onPackaging and is the direct responsibility of Subcommittee D10.32 on ConsumerPackages.Originally developed by the Chemical Specialties Manufacturers Assn.Current edition approved Nov.15,1994.Published January 1995.Originallypublished as D 3063 72.Last previous edition D 3063 79(1984).2Annual Book of ASTM Standards,Vol 15.09.3Annual Book of ASTM Standards,Vol 14.03.4A tapered adapter available from Modern Machine Shop,123 N.Hazel St.,Danville,IL 61832,has been found satisfactory for this test method.5An adapter available from Builders Sheet Metal Works,Inc.,Model D CBA-6,has been found satisfactory for this test method.1AMERICAN SOCIETY FOR TESTING AND MATERIALS100 Barr Harbor Dr.,West Conshohocken,PA 19428Reprinted from the Annual Book of ASTM Standards.Copyright ASTMNOTICE:Thisstandardhaseitherbeensupersededandreplacedbyanewversionordiscontinued.ContactASTMInternational(www.astm.org)forthelatestinformation.7.2 Prepressurize the gage to 25 psi(172 kPa)with thecompressed air.The gage is prepressurized at this time todetermine if the assembly is gastight.If the gage pressureremains co