Document MJE98Kpx08vxmJj5OZ6e38zn7

BESTWALL GTPSU1. COl PANY 2 INDUSTRIAL BLVD. PAOU, P_" A. 19301 > December 8, I960 R. I!. Specification No. 9 * Supersedes R. I.. Spec. No* 9 Dated Oct. 20, 1959 ASBESTOS FLOATS DESCRIPTION Short, fibered, grit free asbestos. USE Ingredient in reinforcing Joint Finisher and Texture paint. SOURCE Johns l'anville C0. - 7RF-1 Floats Phillip Carey - 7RF-? Floats (Kay be obtained from other sources when approved by the General Laboratory). Sr'ECI FI CATIONS S - Should be free from gritty particles. Test for grit is made by decantation with water, using a 25 gram sample and an 800 or a 1000 c.c. beaker. Not less than 750 c.c. of water shall be used for the first washing, so that any grit present will settle freely and not be held in suspension. 0.13 fine grit permitted. FINENESS i2*u 8 mesh " U* It " 20 ft " 30 n " 50 fl "100 H - 100* - 99-5 to 100 - 99 to 100 - 97 to 100 - 50 *o 90 0 to 50 For fineness test, use a 50 gram sample and shake for 30 minutes on the Ro-Tap. W-R TO T.C. - 160 to 230 c.c. COLOR Light gray. Shall be equal or lighter in color than standard sample. SAi-PLDP Representative samples shall be taken from each shipment for test. If the asbestos is ununiform in screen test and water carrying capacity, it shall be blended by any suitable method. RB ARJ3: Tests on each carload of asbestos floats shall be compared with tests of original shipment from same supplier, which was found satisfactory. If any of the tests indicate doubt as to its suit ability for use in joint finisher, it shall be tested in a laboratory batch. If this test shows the materail to be unsatisfactory* the shipment shall be rejected. / -~in this reissue SGP 0015899