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150 cc lipped 250 cc beaker acetone extract corrected alcoholic-potash extract antimony asbestos barium carbonate barium chloride barium sulphate barytes belting boiling bromine buffed cc lipped assay cc of concentrated cellulose chloroform chloroform extract clamped compounding ingredients concentrated hydrochloric acid concentrated sulphuric acid constant weight cool and weigh cross section described in Section determined diameter dilute distilled water equals percentage Erlenmeyer flask evaporate F. S. B. SPECIFICATION fabric filter paper filtrate free sulphur friction funnel g of potassium g sample gauge length gauge marks given in Section glue Gooch crucible hose hydrochloric acid hydrogen sulphide ignition inch wide lipped assay flask method mixture nitric acid Percentage of rubber Percentage of total petroleum ether piece is cut pounds precipitate removed rubber compound rubber hydrocarbon Section XII SHEET PACKING sodium solvent steam bath sulphur in ash sulphuric acid Tensile Strength test piece total sulphur transfer tube unsaponifiable width wire