Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Calorimeter
Patent
1982-09-30
1984-09-18
Schor, Kenneth M.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Calorimeter
422 56, 422 86, 422 87, 436178, G01N 2101, G01N 148
Patent
active
044723539
ABSTRACT:
A gas detector badge for detecting harmful gases, including a gas sensitive tape positioned behind a front panel, having an indicator window, a reference window and a control window. The control window is provided with a gas filter, whereas the indicator window is open to the atmosphere to permit harmful gas to pass through the indicator window to the gas sensitive tape; the reference window includes a gas impermeable member to protect the tape from the atmosphere. Harmful gases contacting the badge pass through the indicator window and the control window, passing through the latter at a slower rate, to chemically react with the tape to develop color as a measure of the harmful gases in the atmosphere.
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