Document e1maLG979EBxE2YEObrKOonje
FOR _DU PONT USE ONLY. REVISED COPY
AR226-2754 Copies to;
Haskell
E. I. du Pont de Nemours and Company
Laboratory for Toxicology and Industrial
Elkton Road, Newark, Delaware 19711
Medicine
HASKELL LABORATORYREPORT NO. 664-80
Material Tested
W e Ammonium Eerfluoro-
capry1ate6 | Study Initiated/Completed May 1980 to July 1980
Haskell No. 12,037
Other Codes
Material Submitted by 'otymer .products Dept.,
Ananon 1um Perfl uorpca^ryl at
;espirator Evaluation
Purpose:
To evaluate M.S.A. Combination Type GMA-H cartridges (part ff464029)2against
ust for breakthrough,
i
Procedure;
j
!
'
1
J^e cartridge pairs were tested against an average concentration of 0.56 mg/nT
f^^ |Unenerated in fl dust generator and Introduced fhto an air flow of 60 liters
I ppeerr'4Ttnnn1iinnnuuttee maintained at 5w0%X rreellaajttiivvee humidity and ambient room temmppeerrat;uurre. Both
upstream and downstream airborne concentrations were monitored fon<Sfipulusst by
fonff filter paper cassettes backed up with an impinger sampling train TO aabbs-o^r.b-
possib1eelMfuBv|vaappoorrss.. Aliquot of the aqueous extracts of the filter paper ('/
and aljffllBBoottss--ooff the aqueous 1mpin|gersamples were analyzed colorimetrical^y
forBBgbytheie Methylene Blue Methodreported by the Plastics Department _
y ^ ----------H.l|. After 40 hours of continuous exposure no detectable amouunn^rof
'll^yustor^apor was found downstream on the breathing side of the cartridge 'pairs tested. The minimum detectable limit was 1.5 ijg of[----J Based on a 420 liter air sample this would calculate out to be .004 ing/rip.
Results:
Cartridge Pair
1 2
Mean Upst ream
Airborne Concentration ing/in3
0.67 ^ 0.33 0.48 j; 0.15
Exposure Time hours 40
54
v ^Gelman glass fiber filters
(2) Part
H 464029
contains
six
Type A/5 47mm (0.3pm)
iM60S42 cartridges.
^con^nTSCACBi
Sann-^d-003
Coinpa^
__^------.
Discussion:
The results demonnss.ttrate fiat the M.S.A. combination type GMA-H cartridges
effectively fllterHWyfdiust am vapor concentrations at the test conditions
for a minimum of 40 hours. Th<e detection limit of .004 mg/m3Is two and onehalf times lower than the proposed acceptable exposure limit (AEL)i therefore, these cartridges could be used at least for one 40 hour week. However, recommendations for cartridge ise should be f^de b_yan Industrial hygtenlst fully aware of the workplace exposures and airborne concentrations.
^ ...,oK^alnTSCACB[
C^anx^^00^ ----- -
-2-