ASTM_D_2203_-_01_2011.pdf

Designation:D220301(Reapproved 2011)Standard Test Method forStaining from Sealants1This standard is issued under the fixed designation D2203;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()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers a laboratory procedure fordetermining whether a sample of sealant will cause staining ofthe substrate when in the contact with masonry,concrete,orstone(marble,limestone,sandstone,granite,etc.).1.2 The values stated in SI(metric)units are to be regardedas the standard.The values given in parentheses are providedfor information only.1.3 This standard does not purport to address all of thesafety problems,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.NOTE1Currently there is no ISO standard similar to this test method.2.Referenced Documents2.1 ASTM Standards:2C510 Test Method for Staining and Color Change of Single-or Multicomponent Joint SealantsC717 Terminology of Building Seals and Sealants3.Terminology3.1 DefinitionsRefer to Terminology C717 for definitionsof the following terms used in this test method:compound,sealant,substrate.4.Significance and Use4.1 Staining of a building is an aesthetically undesirableoccurrence.This test method evaluates the likelihood of asealant causing an early stain on a porous substrate,when thestain is caused by gross exudation from the sealant.This testmethod does not predict staining caused by other factors.4.2 See also Test Method C510.5.Apparatus and Materials5.1 Convection Oven,having a temperature controlled at104.5 6 3C(220 6 5F).5.2 Brass Ring,19 mm(34in.)inside diameter,19 mm(34in.)high,walls at one end beveled to a minimum diameter.5.3 Filter Paper,ten sheets,high-grade,rapid,qualitative 9cm in diameter.35.4 Aluminum Foil,household-type,25.4 mm(1 in.)square.5.5 Weight,300-g.5.6 Spatula,small,thin,steel.5.7 Glass Plate,at least 100 by 100 mm(4 by 4 in.).5.8 Desiccator,with drying agent.6.Sampling6.1 Take the test specimen from a previously unopenedcontainer and thoroughly mix before using,if required forhomogeneity.7.Conditioning7.1 Condition the sample in a closed container for at least 5h at 23 6 2C(73.4 6 3.6F).8.Procedure8.1 Dry the filter papers for 5 to 8 h in an oven maintainedat 104.5 6 3C(220 6 5.4F).At the end of the drying period,remove from the oven and store in a desiccator until cool.8.2 Remove ten filter papers from the desiccator,staplethem together,and place them on a glass plate.Set the brassring with beveled edge down on the center of the filter papers.Fill the ring flush with thoroughly mixed sealant,taking care toincorporate as little air as possible with the compound.Place a25.4-mm(1-in.)square piece of aluminum foil on top of thering,and the 300-g weight on top of that.8.3 Allow the filled ring to stand for 72 h at 23 6 2C(73.46 3.6F).Then slide a spatula under the brass ring and removethe ring and compound.Hold the top filter paper up to the lightwith a glass plate under it and,with a sharp pencil,mark the1This test method is under the jurisdiction ofASTM Committee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommittee C24.20 onGeneral Test Methods.Current edition approved June 1,2011.Published August 2011.Originallyapproved in 1963.Last previous edition approved in 2007 as D2203 01(2007).DOI:10.1520/D2203-01R11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3This test method is based on the use of Whatman No.1 filter paper,manufactured by Whatman,Inc.,9 Bridewell Place,Clifton,NJ 07073.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 maximum and minimum diameters of the stain.Measure thesediameters to the nearest 0.5 mm.Subtract 19(diameter of ringin millimetres)from the average of the two diameters anddivide by 2.Record this result as width of stain.(Width ofstain=(average 19)/2).8.4 Examine the ten individual papers for depth of stain byholding them up to a light.Record the number of papers,including the first one,showing any evidence of staining asnumber of papers stained.8.5 Report the sum of width of stain and number of papersstained as the stain index.9.Alternative Procedure9.1 If the sample or compound to be tested is accompaniedby a sample block of masonry(brick,marble,limestone,etc.)on which it is to be used,the standard procedure shall bewaived and the following alternative test used in its place:9.1.1 Dry duplicate specimens of the masonry sa