Document a41Vb88G3X32EMra1GemdBLBB

Jack T. Garrett, Medical Department August 5, 1969 R. B. Keller, S. Sacond St W. R. Richard, WRICH Dr. B. S. Tuckar S. Sacond Straat 1 was recently dlacuaalng tha PCB analytical problem with Dr. Donald I. Mount, Dlraotor of tha National Water Quality laboratory at Duluth, Mlnnasota and with Nr. John I. Taaalay of tha same laboratory. In tha discussions thay aantlonad that tha Flab and Wlldllfa Service laboratory at Ann Arbor, Michigan had told thaa of a raeant contamination problaa thay had axpardanead. Apparantly thla contamination was traced to tha dlshwashsr soap uaad In a washirwc aaohlna for laboratory apparatus. Analysis ahowad that tha dlsbwashar soap oontalnsd 5 ppa KB. Tha dlshsaabar soap In question waa "Blectro-Sol" which Is nanufacturad by Kconoad.cs laboratory, Ino., St. Paul, Mlnnasota. incldantally, thla company alao naaufaoturos "Finish" dlshwashsr soap. Bloetro-Sol contains tbs following aatarlalsi ..1. Bon Ionic datargsnt (B.O. oondansata)--\% 2 Sodium trlpolyphosphate--3*0 3 Anhydrous sodium natasllleata--7J% ..k. Sodlua carbonate--360 5 Potasslam dlohloroisocyaaarete<(ACL 59)--\% 6 Parfuma--traoa 7. Hatar--traoa It is of lntsrast to note that all aarrant dishwasher soaps aontain aa avallabla chlorine additive. Cascade, manufactured by Prodtor and Oaafele, and Dishwasher All, manufactured by Lever Brothers, contains chlorinated trlsodlum phosphate. Dr. Mount and Nr. Taaalay are convinced that PCB Is catering tha watar environment as a contaminate and not necessarily from tha manufacture or use of this produet. One due about tha possibility of PCB la these products la Its use aa a da-dusting agent. According to tha Inorganio Division, none of our phosphates use this material as a da-duster. Zt is, however, poeelble that the medioillcate and/or tbs carbonate salts ware ao treated. JTQiJu Jack T. Oarrett HONS 097464