Document J3vkyeMJ162opggQxganV12RB

12 #3500 ORGANIC VAPOR MONITOR NIOSH EVALUATION OF DIFFUSIONAL MONITORS We have been made aware that there is conflicting informa tion CIRCULATING ABOUT THE CURRENT TESTS BEING CONDUCTED BY NIOSH/ ESPECIALLY CONCERNING THE PERFORMANCE OF THE OVM #3500, Because of the: design of the test protocol, there are some test conditions under which all diffusion-type monitors will do badly. This ste-ms from the choice of compounds and levels being tested. There are.- other test areas which will discriminate between the performance of individual monitors. At THIS TIME/ SPECIFIC INFORMATION IS NOT BEING RELEASED/ AND WILL PROBABLY NOT BE RELEASED UNTIL THE END OF THE YEAR, Anything you may hear from the field is merely speculation. Rumors that the DuPont Pro-Tek would have some advantage if included in the present testing are unfounded. MIM/FWS:tas TDB-12-July 1979 3M 106412