Document 7qr6qodjdB2XB055a2NNQZaj

April 13 1977 Dear Round Robin Participant Thank you for your prompt response to the recent CTFA Task Force on the round robin analyses of comsumer tale 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 me 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 Interlaboratory comparison of our Task Force data ten amics amics indicates amics The commercial in the results ited. i.e. three 3 of our products have each been shown by two or three of the laboratories to have failed CTFA Method J4-1 Parts I and II asbestiform amphibole detected at a level 0.5The sample code which is still in my possession has been released to no one In view of these results you are urged to attend we ek What might needyour input a meeting of this Task Force so that L a need What What L | the consider alternativesfor further action and discuss apparent ee pe EAE procedural problems with methodology step t t team step . eng ane j ... _ f Liber Liber camal~-y~- camal~-y~- special special special special 0100997 JNJ 000283882 DATE TIME PLACE ~ May ' 1977 a.m. CTFA Headquarters 1133 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 JPS 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 0100998 JNJ 000283883