Patent ID: 6581435
Filing Date: 2003-06-24
Classification: A61L,G01D,G01N,Y10T

Abstract:
A method for verifying that a sensor for measuring the quantity of sterilant in a system for delivering said sterilant has been calibrated accurately, wherein said sterilant is delivered in a stream of flowing air, said method comprising the steps of:(a) performing at least two static test runs for said sensor to obtain readings of concentration of sterilant vapor; (b) performing at least two dynamic test runs for said sensor to obtain readings of concentration of sterilant vapor; (c) comparing the results of said at least two static test runs; (d) comparing the results of said at least two dynamic test runs; (e) concluding that (1) the flow rate of air has changed or (2) the rate of addition of sterilant to the system has changed or (3) said sensor is unreliable if (i) if said readings of concentration of sterilant vapor determined in said static test runs remain substantially constant, but said readings of concentration of sterilant vapor determined in said dynamic test runs vary substantially or (ii) if said readings of concentration of sterilant vapor determined in said static test runs vary substantially, but said readings of concentration of sterilant vapor determined in said dynamic test runs remain substantially constant.