|
Issue Date: November 22, 1995
Revision Date: April 18, 1997
FDR
Services, Inc.
GasPak
Vapor Monitoring System
OUT-OF-TANK
PRODUCT DETECTOR (VAPOR-PHASE)
Detector:
|
Output
type: |
quantitative |
|
Sampling
frequency: |
intermittent |
|
Operating
principle: |
product permeable
detector |
Test
Results (averages of multiple concentrations):
|
|
benzene
|
heptane,
3-methyl
|
hexane
|
iso-octane
|
|
Accuracy (%)
|
103
|
102
|
107
|
103
|
|
Bias (%)
|
-1
|
1
|
2
|
1
|
|
Precision (%)
|
2
|
2
|
4
|
2
|
|
Lower detection limit (ppm)
|
1
|
1
|
1
|
1
|
|
Specificity (%)
|
100
|
100
|
102
|
101
|
|
|
pentane,
2,4-dimethyl
|
pentane,
2,3,4-trimethyl
|
toluene
|
m-xylene
|
|
Accuracy (%)
|
105
|
104
|
104
|
99
|
|
Bias (%)
|
1
|
1
|
1
|
-6
|
|
Precision (%)
|
3
|
3
|
3
|
4
|
|
Lower detection limit (ppm)
|
3
|
1
|
1
|
4
|
|
Specificity (%)
|
101
|
100
|
100
|
94
|
Specificity
Results:
See results above.
Comments:
Detection times were not directly
measured. However, evaluator
states, “experiential evidence predicts that the detector response will reach
‘alarm’ conditions (30% of maximum fresh fuel response) at a distance of 5
meters in slightly over one day.”
Each cartridge is used once, then replaced by another.
GasPak is produced and analyzed by Fayette
Environmental Services, Inc., with exclusive marketing and
implementation rights assigned to FDR Services, Inc.
|
FDR Services, Inc.
|
Evaluator: David G. Bray,
Ph.D.
|
|
Manufacturer’s Previously Listed Contact Information is No
Longer Valid.
|
University of Missouri - Columbia
|
|
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Tel: (573) 882-2439
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Date of Evaluation: 07/27/94
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