Sensor for peracetic acid-hydrogen peroxide solution
AssigneeMinntech Corporation
InventorsLouis C. Cosentino, David C. Gust, Roger L. Funk, Gerald J. Rinehart, Vernon S. Taaffe
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Abstract
Concentrations of stock hydrogen peroxide-peracetic acid solutions can be monitored resistively. The resistivity cell electrodes have titanium surfaces which resist corrosion better than other electrode materials including platinum electrodes. Such resistivity monitoring is particularly useful to verify the concentrations of sterilant stock solutions used in machinery for cleaning and sterilizing medical and dental equipment such as dialyzer reuse machines. Over the temperature range of interest the resistivity measurement is substantially not affected by changes of temperature in the room temperature range.
Claims7
In a machine which automatically dilutes stock solutions of peracetic acid and hydrogen peroxide for subsequent use as cleaning and sterilizing agents, the improvement comprising:
- a concentration and sensing means operably in contact with the stock solution prior to use of the stock solution as cleaning and sterilizing agents for determining a resistively measured value of a composition peroxide concentrate dependent parameter of the stock solution and issuing an alarm signal if that value is outside a predetermined acceptable range.
Dependencies are inferred from the claim text.