Document RjbBByRy3qwnwxVQRQXb218aE

April 20 1977 Dear Round Robin Participant Thank you for your prompt response to the recent CTFA Task Force on the round robin analyses of consumer talc products 1976 production for asbestiform amphibole minerals I have received and completed a comparative work of data from all participating laboratories with the exception of Mount Sinai Personnel at the Mount Sinai Environmental Sciences Laboratory now inform that they are currently involved with another project which precludes their participation in our round robin at this time Hopefully they will perform these analyses at a later date laboratory comparison of our Task Force data indicates serious inconsistencies in the results i.e. three 3 of the commercial products have each been declared by two or three of the laboratories to have failed CTFA Method J4-1 Parts 1 and II asbestiform amphibole detected at a level 20.5 The sample code which is still in my possession has been released to no one In view of this situation you are urged to attend the meeting of this Task Force so that we might further discuss these results and the potential sources of difficulty It will be necessary for us to deliberate on a further course of action which would include special training for the analyists and repeating the round robin 0100995 JNJ 000283880 MEETING DATE TIME PLACE May ' 1977 M. CTFA Headquarters 1133 15th Street Washington D.C. N.W. Because of the importance of this meeting please contact me 524-5518 if you or an alternate representative from your company cannot be present Your continued support is appreciated Sincerely - "=: John P. Schelz Chairman CTFA Task Force on Round Robin Testing of Consumer Talcum Products Central Analytical Laboratories . Johnson & Johnson Research Center . New Brunswick N.J. 08903 0100996 JNJ 000283881