Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Patent
1991-02-25
1993-09-21
Johnston, Jill A.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
422 78, 436155, 436159, G01N 3112
Patent
active
052466671
ABSTRACT:
An analytical furnace includes a pair of generally vertically extending coaxially mounted spaced furnace tubes mounted to a support. The inner tube is made of a material which does not react with the specimen during pyrolysis to produce intereferring byproducts. An analytical sample crucible is supported above the support by a carbonaceous material which in the preferred embodiment comprises a combination of a carbon-felt packing material resting on the support and granular carbon black on which the crucible is placed. The material is selected to position the crucible in the hot zone of the furnace which includes a heater for heating an analytical sample for pyrolysis. The analytical furnace further includes a lance tube extending over and in coaxial alignment with the inner and outer furnace tubes for directing a sample and a carrier gas into the open mouth of the cup-shaped crucible.
REFERENCES:
patent: 3972682 (1976-08-01), Stephens et al.
patent: 4087249 (1978-05-01), Okumoto et al.
patent: 4229412 (1980-10-01), Orths et al.
patent: 4244917 (1981-01-01), Woods et al.
patent: 4282183 (1981-08-01), Bredeweg et al.
patent: 4352781 (1981-10-01), O'Brien
patent: 5064617 (1991-11-01), O'Brien et al.
"Carbon And Graphite High Temperature Insulation" Polycarbon Inc. (A member of Sigri Group), Valencia Calif. 91355.
"Glassy Carbon-A Material For Use In Analytical Chemistry," Sigri Group.
Guerra Carlos
Hemzy Wayne R.
Johnston Jill A.
Leco Corporation
LandOfFree
Analytical furnace does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Analytical furnace, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analytical furnace will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1047849