Sharon J Shields

US Patent:

20090068065, Mar 12, 2009

Filed:

Jul 31, 2008

Appl. No.:

12/183210

Inventors:

Philip F. Pagoria - Livermore CA, US
Alexander R. Mitchell - Livermore CA, US
Richard E. Whipple - Livermore CA, US
M. Leslie Carman - San Ramon CA, US
John G. Reynolds - San Ramon CA, US
Peter Nunes - Livermore CA, US
Sharon J. Shields - San Ramon CA, US

International Classification:

G01N 21/00
B23P 11/00

US Classification:

422 8205, 29428

Abstract:

A simple and effective system for the calorimetric determination of organic peroxides and hydrogen peroxide. A peroxide pen utilizing a swipe material attached to a polyethylene tube contains two crushable vials. The two crushable vials contain a calorimetric reagent separated into dry ingredients and liquid ingredients. After swiping a suspected substance or surface the vials are broken, the reagent is mixed thoroughly and the reagent is allowed to wick into the swipe material. The presence of organic peroxides or hydrogen peroxide is confirmed by a deep blue color.