ASTM_F_331_-_13.pdf

Designation:F33113Standard Test Method forNonvolatile Residue of Solvent Extract from AerospaceComponents(Using Flash Evaporator)1This standard is issued under the fixed designation F331;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of nonvolatilematter,that is,residue on evaporation,in solvent extract fromaerospace components,using a rotary flash evaporator.1.2 The procedure for extraction from components is de-scribed in practices such as Practice F303.Before subjectingthe extract to the following method,it should be processed toremove the insoluble particulate in accordance with PracticeF311(Note 1).Particle count analysis of the removed particu-late may then be performed in accordance with Test MethodF312.If particulate is not removed from the extract prior toperforming this method,this should be noted on the test report.NOTE1Membrane filters with a maximum extractable content of 0.5weight%should be used on samples to be processed by this test method.Conventional membranes contain 5 to 10%extractables.For obtainingvery low background levels,consideration should be given to usingmembranes without grid marks.1.3 The values stated in SI units are to be regarded asstandard.1.4 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.2.Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterF303 Practices for Sampling for Particles in AerospaceFluids and ComponentsF311 Practice for Processing Aerospace Liquid Samples forParticulate Contamination Analysis Using Membrane Fil-tersF312 Test Methods for Microscopical Sizing and CountingParticles from Aerospace Fluids on Membrane Filters2.2 IEST Standard:3IEST-STD-1246D Product Cleanliness Levels and Contami-nation Control Program3.Summary of Test Method3.1 A sample of fluid or the filtrate(Note 1)from a sampleof extract from components is evaporated as necessary toapproximately 20 mL in a flash evaporator.The residue is thentransferred to a foil dish and the evaporation completed byheating to a constant weight.4.Apparatus4.1 Oven,gravity convection provided with suitable ther-mometer and a temperature range suitable for the solvent beingevaporated.4.2 Analytical Balance,single pan or magnetically dampeddouble pan.NOTE2Sensitivity shall be suitable to obtain the required precisionnoted in 10.1.4.3 Evaporator,flash,batch-type.4.4 Graduated Cylinder.4.5 Tongs or forceps,laboratory,for manipulating weighingfoil dishes.4.6 Desiccator,balance,to be placed in balance case.4.7 Desiccator,cooling with plate.4.8 Weighing Vessels,aluminum foil weighing dishes.Thesemay be purchased pre-formed dishes or may be constructedfrom clean aluminum foil.4.9 Pressure Source,capable of providing 85 KPa(25-in.Hg)for short interval.4.10 Distillation Apparatus,laboratory,all glass(requiredwhere solvents with sufficiently low residue are not available).Do not use grease or oil to lubricate glass joints.1This test method is under the jurisdiction of ASTM Committee E21 on SpaceSimulation and Applications of Space Technology and is the direct responsibility ofSubcommittee E21.05 on Contamination.Current edition approved June 1,2013.Published July 2013.Originally approvedin 1970.Last previous edition approved in 2005 as F331 05.DOI:10.1520/F0331-13.2For 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.3Available from Standardization Document Order Desk,Bldg.4 Section D,700Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Reagents and Materials5.1 Purity of ReagentsReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is intended thatall reagents shall conform to the specifications of the Commit-tee on Analytical Reagents of the American Chemical Societywhere such specifications are available.4Other grades may beused,provided it is first ascertained that the reagent is ofsufficiently high purity to permit its use without lessening theaccuracy of the determination.5.2 Purity of WaterUnless otherwise indicated,referencesto water shall be understood to mean reagent water conformingto Specification D1193.5.3 Solvent for Extracting and RinsingThe baseline NVRof the solvent shall not exceed 10%of the requirement beingtested.5.4 Cleaning AgentLiquid surface-a