We are using two types in our house. One is by Thermalog, which has a small of amount of chemical that will not spread unless met with the parameters for sterilization; the other is a flash indicator made by Propper. This has two readings : one 3 minute indicator and a 10 minute indicator. The 10 minute will not change unless exposed for that length of time. I do not know about autoclaves that have internal jacket pressures...which by your explanation it seems yours does. Does your temp of the autoclave get cooler than 200 degrees? When you put the trays in are the 'clave doors open or shut? If they are shut, that could cause the indicator to change. Good luck...also a good reference for products is available from AORN. its the OR product handbook, I think.
Originally posted by ornurse:
Has anyone ever seen a comparison of the various steam indicators available on the market? We are using one now that will turn if placed in an autoclave, door open, for 30 minutes. Even though instruments should never be placed in the autoclave prior to being "ready to run", it happens. The company in question states that this color change cannot take place... Malarky!
In order to reduce the chance of accidentally using unsterile instruments we would like to find a better alternative.
Input would be appreciated.
[This message has been edited by motherhenjjs (edited February 22, 2001).]