1、Designation: D 3060 94 (Reapproved 2005)Standard Test Method forPressure Drop Rate of Compressed Gas-PropelledProducts1This standard is issued under the fixed designation D 3060; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、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 pressuredrop rate of compressed gas-propelled products.1.2 This
3、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 determine the applica-bility of regulatory limitations prior to use.2. Significance and Use2
4、.1 This test method is applicable to all products packagedin prepressurized containers, and is rapid and reproducible.2.2 Actual usage dispensing conditions are simulated in thetest.2.3 This test method is such that any slight variance invalves and actuators are overcome, and the final equilibriumpr
5、essure in the container is correlated to the amount of productdispensed.3. Apparatus3.1 Gage (Fig. 1)Prepressurize the gage with compressedgas to a pressure 5 psi (34 kPa) higher than the expectedpressure in the container, to determine if the assembly isgastight. If the gage pressure remains constan
6、t, the assembly issufficiently gastight.NOTE 1Prepressurizing the gage 5 psi (34 kPa) higher than theexpected container pressure also minimizes the possibility of gagecontamination when measurements are taken through the valve. If thegage is at a significantly lower pressure than the container when
7、the gagevalve is opened, aerosol product will enter the gage and possibly affect itsaccuracy.4. Sampling4.1 Samples shall be selected representing the true productformula either from production or the laboratory.5. Conditioning5.1 Refrigerate products normally refrigerated at 40F(4.4C) for at least
8、24 h before testing.5.2 Keep products normally stored at room temperature at70C (21C) for a minimum of 24 h before testing.6. Procedure6.1 Mass DeterminationWeigh a replicate of three filledcontainers, and record the mass in grams.6.2 Pressure Determination:6.2.1 Using the prepressurized gage, check
9、 the equilibriumpressure in the container to minimize product or pressure loss.6.2.2 For products that require shaking, as indicated in thedirections on the label, shake as follows:6.2.2.1 Grasp the container in an upright position, and movethe arm downward in an arc. As the arm moves downward,inver
10、t the container. Exert enough force in the motion to throwthe product to the top end of the container. Then bring thecontainer back to the starting position.6.2.2.2 Repeat 6.2.2.1 for a total of ten times, pausing for afew seconds between the cycles.6.2.3 Do not agitate products that are dispensed w
11、ithoutshaking, before determining the equilibrium pressure.1This test method is under the jurisdiction of ASTM Committee D10 onPackaging and is the direct responsibility of Subcommittee D10.33 on MechanicalDispensers. Originally developed by the Chemical Specialties Manufacturers Assn.Current editio
12、n approved April 1, 2005. Published April 2005. Originallyapproved in 1972. Last previous edition approved in 1999 as D 3060 94 (1999)e1.FIG. 1 Prepressurized Gage Assembly1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.3 Dispensin
13、g:6.3.1 If required, shake the container in accordance with6.2.2.1 and 6.2.2.2, and record the pressure before eachdispensing.6.3.2 Holding the container in the proper position, dispensea weighed amount at 5-min intervals.6.3.3 Regulate the rate of dispensing so that the product isexpelled in a give
14、n number of dispensings. (See Table 1 for therecommended number of dispensings.)6.3.4 Record the mass in grams of the product dispensedafter each dispensing.6.3.5 Stop dispensing when the first gas discharge is ob-served. Weigh the container, and record the final equilibriumpressure.6.4 Maximum Deli
15、very:6.4.1 Hold the container, without dispensing, in the dispens-ing position (inverted for invert style valves, and upright fordip tube valves) for a 2-min period.NOTE 2Do not shake the container after standing.6.4.2 Dispense the product until the gas supply is exhausted;then weigh the container.6
16、.5 Tare Mass:6.5.1 To obtain the tare mass, cut open the container, wash,and dry it. Weigh the container, and record the mass in grams,as the tare mass.7. Calculation7.1 Tabulate the mass of the product in grams versus theequilibrium pressure in the container.7.2 Plot the mass of the product in gram
17、s on the abcissasand the equilibrium pressure on the axis of ordinates to obtaina pressure drop graph.8. Precision and Bias8.1 PrecisionThis test method is being reviewed fordevelopment of a precision statement based upon intralabora-tory test data. Volunteers from various CSMA Aerosol Divi-sion, Te
18、st and Standard Methods subcommittee membershipwill provide the precision statement based upon their within-laboratory data.8.2 The following criteria should be used for judging theacceptability of results (95 % confidence):8.2.1 RepeatabilityDuplicate results by the same operatorshould be considere
19、d suspect if they differ by more than 1 %.8.2.2 ReproducibilityResults submitted by each of twolaboratories should be considered suspect if the two resultsdiffer by more than 2 %.9. Keywords9.1 aerosol; package; pressure drop rateASTM International takes no position respecting the validity of any pa
20、tent 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 revisio
21、n at any time by the responsible 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 com
22、ments will receive careful 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 copyright
23、ed by ASTM International, 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-
24、mail); or through the ASTM website(www.astm.org).TABLE 1 Recommended Number of DispensingsContainer Size,Sales Code Diameterand HeightATotalCapacity,oz.Recommended DispensingsFoam Stream Spray202 by 214B4.9233202 by 314 6.4 3 4 4202 by 406 7.7 4 5 5202 by 509 9.8 5 6 6211 by 413 13.7 6 9 9211 by 510
25、 15.9 7 10 10211 by 604 17.8 10 12 12AThe sales code diameter is the overall diameter of a tin-plate fabricatedaerosol can, taken from the double seam at the bottom of the container.The sales code height is the height of a tin-plate fabricated aerosol can takenfrom between the double seams at the top and bottom of the cylinder.BThe sales code diameter and height can be converted to inches as follows:202 by 214 = 2216 by 21416 in.D 3060 94 (2005)2
