Document M4xOZx02egYDGdjaKK0DN4409

*- ssv**' ' v ^ 4 J V. |. N^ 'i-?nr ,, M ksANTO Chemical Com. Iny ANNISTON, ALABAMA Hr* Barker = June 19, 1942 St. Louis Ur. Paul Logue ARDCLORS MONSANTO CHKMIOAIS LIMITED 4 .* ;W; ' K ^*,,'r** ' ** WV- ** p5 ,*'" ' ^ f Sie'-'V - ?t -(V"N ."K ' vi' ,v, -- Your inquiry as to how Mr. Pentz pan identifya parti- cuiar grade. of Aroclors and also determine whether contamination t ^ >' A** * / < has occurred during shipment Z think can he answered as follows! (1) The grade of Aroclors oan readily he identified hy a specific gravity determination. -- the dri itamination from particles of metal or rust from nurse, be determined by visual examination. (5) Donta Lnation from water can possibly best be dete/kfhed by the Pisher_Beagent Method. If Mr* Pentz is A equipped to determine TO3i*tr*ity, this test is also quite senliWve to noisture/cpntabTifK^feipn or any polar impurities. The aNffi&r test loidit/provide i^itional information, but, I think oiSrelStively little "s 1 am supply you with .hat Mr. Barker ntioned above. DTE SliA -$t*e;r : Sr.-.r ^ \. - X--:;K3 'M ' A* * / A* V qSW 331034 STLCOPCB4077678