Method and apparatus for controlling gas evolution from chemical

Details Method and apparatus for controlling gas evolution from chemical Method and apparatus for controlling gas evolution from chemical

1996-08-14

1999-05-25

Sisson, Bradley L.

Chemistry: analytical and immunological testing

Rate of reaction determination

436 55, 436807, 4352871, 4352891, 422106, 422119, G01N 3300, C12M 100, G05D 900

Patent

active

059069430

ABSTRACT:
The present invention is directed toward monitoring a thermally driven gas evolving chemical reaction with an acoustic apparatus. Signals from the acoustic apparatus are used to control a heater to prevent a run-away condition. A digestion module in combination with a robotic arm further automate physical handling of sample material reaction vessels. The invention is especially useful for carrying out sample procedures defined in EPA Methods SW-846.

REFERENCES:
patent: 4391129 (1983-07-01), Trinh et al.
patent: 4524282 (1985-06-01), King
patent: 4869233 (1989-09-01), Stulen et al.
patent: 5252296 (1993-10-01), Zuckermann et al.
patent: 5656239 (1997-08-01), Stegemeier et al.

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