Issue Date: November 22, 1995
Revision Date: August 23, 1999

Praxair Services, Inc.
(originally listed as Tracer Research Corp.)

Tracer Tight

OUT-OF-TANK PRODUCT DETECTOR (VAPOR-PHASE)

Detector:

Output type:

quantitative

Sampling frequency:

intermittent

Operating principle:

chromatographic (looks for chemical tracer)

Test Results:

  xylene

  benzene

  2-methylbutane

unleaded gasoline

chemical tracers

Hydrocarbon Detector (GC/FID)

Accuracy (%)

<20

<20

<20

<20

N/R*

Bias (%)

0

0

0

0

N/R

Detection time (sec)

<1

<1

<1

<1

N/R

Fall time (sec)

<1

<1

<1

<1

N/R

Lower detection limit (ppm)

20

20

20

20

N/R

Tracer Detector

 

 

 

 

 

Accuracy (%)

N/R

N/R

N/R

N/R

<20

Bias (%)

N/R

N/R

N/R

N/R

0

Detection time (sec)

N/R

N/R

N/R

N/R

<1

Fall time (sec)

N/R

N/R

N/R

N/R

<1

Lower detection limit (ppm)

N/R

N/R

N/R

N/R

10-5

* See glossary.

Manufacturer’s specifications:
Soil permeability at the site must exceed 1 Darcy.

Comments:
System utilizes a chromatographic measurement of a vapor sample collected monthly from the site.  Hydrocarbon vapors and the added chemical tracer can be measured independently. 
During evaluations, the tracer chemical was declared 159 out of 161 trials. 

System evaluation included detectors, analytical procedures, sample containers, sampling procedures, sampling system, monitoring well materials and installations, and tracer mobility.

 

Praxair Services, Inc.

Evaluator: Control Strategies Engineering (out of business)

3755 N. Business Center Dr.

Tel: Contact Praxair Services, Inc.

Tucson, AZ  85705

Date of Evaluation:  05/05/92

Tel:  (800) 394-9929

 
E-mail:  info@praxair.com  

URL: www.praxairservices.com

 

 

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