Document VpZxEZmd7rmD88nG5nx9YO6p
.p
WEST-PAIN E JabotatotieA INC. ,
1^., i 7979 GSRIAVE * BATON ROUGE, LA 70820
ASBESTOS FIBER COUNT ANALYSIS
\
for
lab V,
DOW CHEMICAL COMPANY Post Office Box 500
Plaquemine, Louisiana 70765-0500
ATTENTION: Jackie Paul
October 6, 1988
no A 116557 CONT IDFIMT T AI
88-6651
J
.p
WEST-PAIN E JahoyaAcnceA INC. ,
7979 GSRI AVE BATON ROUGE. LA 70820
DOW CHEMICAL COMPANY Plaquemine, Louisiana
October 6, 1988
Five (5) filter cassette samples were received on October 5, 1988, from Dow Chemical Company for asbestos fiber count. Fibers larger than 5 microns in length were counted by means of phase-contrast microscopy at a magnification of 400X. The procedure recommended by NIOSH Method 7400A was followed.
Pertinent information regarding fiber counts is as follows:
Field Area: 0.00785 mm2 (Walton Beckett Graticule)
Effective Collecting Area:
?
385 nmC (25mm Cassette)
855 miri (37mm Cassette)
Limit of Quantitation: 10 fibers/100 fields
Limit of Detection: > Average Blank Count
* Detection limits are based upon a minimal concentration
f ibers/min .
of
Sample ID.
Fibers (>5um) Observed
No. of Fields Observed
Fibers per
Filter
Volume of
Air (L)
Fibers (>5um) per c.c. of Air
09017 09018 09216 09217 BLANK
13 - 1 = 12 7 -1 = 6 3 -1 = 2
87 - 1 = 86 1
100 100 100 100 100
5,885 2,943
981 42,179
p4iilip Wf WfSSt, ^pfvTlbo
Laboratory Director
DO A 11 A550 f ONF T OF FIT I At