ASTM_D_3519_-_88_2002.pdf

Designation:D 3519 88(Reapproved 2002)An American National StandardStandard Test Method forFoam in Aqueous Media(Blender Test)1This standard is issued under the fixed designation D 3519;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 measurement of the increasein volume of a low-viscosity aqueous liquid(less than 3 cSt at40C)due to its tendency to foam under high shear conditions.NOTE1Foam under low shear is covered by Test Method D 3601.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are provided forinformation only.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 and health practices and determine the applica-bility of regulatory limitations prior to use.For specific safetyinformation,see 7.16.2.Referenced Documents2.1 ASTM Standards:D 1126 Test Method for Hardness in Water2D 3601 Test Method for Foam In Aqueous Media(BottleTest)33.Summary of Test Method3.1 The increase in volume is determined by the increase intotal height of test fluid including foam after blending for 30 susing a commercial-type blender with glass jar(see Note 2)at25 6 1C(77 6 1.8F)agitating between 4000 and 13 000rpm.The preferred range would be 8000 6 1000 rpm.4.Significance and Use4.1 The results obtained by the test method described areuseful as guides in determining the tendency of a water-basedmetalworking coolant to produce foam under high shearconditions.No correlation with changes in heat transfer,pumpability,or other factors affected by foam is intended.Thefoam produced by any given industrial process depends on themethod by which the foam is generated and may not be directlyproportional to that produced by this carefully controlledlaboratory test method.Further,the foam generated at thespecified test temperature will not necessarily predict thefoaming tendency of the liquid(that is,metalworking coolant)at some other use temperature.5.Apparatus5.1 Blender.NOTE2Tests with blenders other than commercial 7-speed WaringBlendor Model 5012G or Model 91-264(7012G),as shown in Fig.1,maybe suspect due to differences in speed or shape of the jar.4The blenderspeed should be calibrated by any reliable means.One means can be to usea hand-contact tachometer to get the order of speed and then to get severalmore precise determinations using a stroboscope(which does not touchthe rotor).Settings then can be selected to obtain the recommended speed.5.2 Water Bath,constant-temperature,suitable to holdblender jar and several bottled emulsions at 25 6 1C(77 61.8F)for 1 to 2 h.55.3 Stop Watch or Timer,capable of measuring 5 min 60.2 s.5.4 Glass Jars or Bottles,clean or new,250-ml(8-oz)or500-ml(16-oz).5.5 Graduated Cylinder,250-ml,fitted with ground-glassstopper.5.6 Rule,millimetre,approximately 300 mm long to beattached to the blender jar.6.Materials6.1 Distilled Water.6.2 Hard Water,20 000 ppm,made as follows:Dissolve29.4 g of reagent grade(ACS standard)CaCl22H2O in 1 L offreshly boiled distilled water.(Used only where distilled wateris used as in Note 3.)1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.L0.01 Metal Removal Fluids and Lubricants.Current edition approved Oct.31,1988.Published January 1989.Originallypublished as D 3519 76.Last previous edition D 3519 76(1982)e2.2Annual Book of ASTM Standards,Vol 11.01.3Annual Book of ASTM Standards,Vol 05.02.4Except for exterior finish of the base,Blendor Models 5012G and 7012G(91-264)are the same.Blendors may be purchased from Waring Products Div.,orthrough supply houses(such as Cole Palmer No.4244-80).5Acommon household dishpan is satisfactory when the test temperature is closeto room temperature.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.7.Procedure7.1 Clean and rinse the blender with distilled water using 10s blends and fresh samples of distilled water until no appre-ciable foam is developed by blending.7.2 Place the blender jar in the constant-temperature bath.(The bath water should not be allowed inside the jar.)7.3 Using the manufacturers recommended procedure,pre-pare 200 ml of emulsion at the recommended use concentra-tion.7.4 When tap water is used,record water hardness(usingTest Method D 1126),source,and date obtained.NOTE3In the absence of manufacturers recommendations,place 190ml of distilled water in the 250-ml capacity glass-stoppered graduatedcylinder.Pour a fine stream of coolant concentrate into the cylinder tobring the liquid level to the 200-ml