UST Programs - LG 113

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

Mallory Controls

Pollulert Probes MD221G/T, MD221G/TRA, MD241R, MD241RRA, MD241G, MD241GRA

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

Mallory Controls no longer produces, services, or supports the use of this method.

Detector:

Output type:	qualitative
Sampling frequency:	continuous
Operating principle:	electrical conductivity

Test Results:

	unleaded gasoline	synthetic gasoline	JP-4 jet fuel
MD221G/T, MD221G/TRA*
Detection time (sec)	4	7	2
Fall time (sec)	3	4	4
Lower detection limit (cm)	0.08-0.32	0.08-0.32	0.08-0.32

MD241R, MD241RRA, MD241G, MD241GRA**
Detection time (sec)	2	2	1
Fall time (sec)	1	2	2
Lower detection limit (cm)	0.16-0.32	0.16-0.32	0.16-0.32

*Evaluation was conducted using probe FD221G/TRA.
**Evaluation was conducted using probe FD241R.

Specificity Results (in addition to above):
Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s).

Comments:
According to manufacturer, probes beginning with "MD" have identical performance as older probes beginning with "FD."
Sensors are reusable.
Manufacturer no longer produces, services, or supports this equipment.

Manufacturer's Previously Listed Contact	Evaluator: Radian Corp.
Information is No Longer Valid.	Tel: (512) 454-4797
	Date of Evaluation: 07/08/91

Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the performance of the method or equipment.
Equipment should be installed and operated in accordance with all applicable laws and regulations.
For full details, please refer to our expanded "DISCLAIMER" page.