Document G62YonDBEReZ3GYRwbbJy85N

oc: Dr. J. 7. Bom, Clsvsland Chlcneo Xohr, dr., Atfc, Z. Coaah Chisago Auxiliaries heaearefa >aroh 12, 1952 (diot. 3/ll) Llthopone frost Mexico As psr your reqieat, wo hsrs -valuated ths staple of yextoan Llth opone * leh you submitted against both our standard Psmolith 2<X and our standard Peraolith 4-320. Tbs results ars suaaarised below 1 "ample 311 absorpti n lbs./l00 'fater absorption #/lOO Color Texture, Be nan, 50 rev, of Hoover Duller 20L 11.6 16.8 Std. U-l/8 *-320 lb. 6 21.2 eq. to Std. Max loan 13. 22.0 r. cr**n?rar -- 2-1/8 Hotel Mexican saaple very gritty under the apetula. Sp. Resistance 11,600 M50 pP 9.12 7.63 Ca. Trane Trane Tinting Strength 275 Liidit Sensitivity 1 1/2 u.300 9.23 si. 23? 3 * rated aInst grey standards, higher number refers to greater sensitivity. As you will see, this Material la inf-rior to our llthopone is almost every reepeot. The oolor is poorer; has lower hiding power; great-r light sensitivity; and very poor texture. 0007--SWP-043837 N23294 Ur. r. A. tabr, Jr., Att. C. Ooaah -2 Uarah 12, 1^52 Following your au*oatloo, wa hart wd a Tory oarwful toat for aolubla ilao aalta, tad ovar to at indiaatod lota than 0.015X a* tfaio aulfato, Wa did, howawar* oonfina yaur obaorratton that tho prsolpltata foroad by tha ox alato tsat did not bahawa aa tho ealalua oralata no raally doaa. da truat thia giwaa you tha infonatlrna that you daalra. coi 33C,Jr. JVH C. fl. t*aaa Ulna ml Produat* Laboratory RC^tD m1: '352 0007--SWP--04 33 38 0007-SWP-000127188