US Government as Represented by the Secretary of the Army

Perkinelmer Health Sciences, Inc.

Kenneth D Nemelka

Nathan L Porter

Anthony David Rands

Chad B Grant

Randal W Waite

Michael B DeZearn

Russell A Bonsteel

Wesley D Ercanbrack

Christopher A Bailey

Certain configurations of devices and systems which are configured to draw a selected volume of an air sample into a trap are described. In some examples, the devices and systems comprise a pump and a mass flow sensor to draw a selected volume of the air sample through a trap even where variable restriction occurs.

Sampling pumps and closed loop control of sampling pumps to load traps

An apparatus and method for performing permeation testing on materials used in personal protective equipment is described. Two or more test cells are loaded with swatches of material and inserted into the testing apparatus. Chemicals to be tested on the material are loaded into one or more syringes and may be introduced into the top of the test cells as a liquid or a vapor. Vapor is collected from the bottom of the test cells, underneath the swatches of material, and tested for concentration of the chemicals being tested. The apparatus and method facilitates instantaneous breakthrough analysis, control of the sample environment and ease of operator use and calibration.

Apparatus and method for automated permeation testing of vapor and liquid penetration

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Alpine, UT, United States of America

Kenneth D Nemelka