hello all I'm creating a device to warm up some biological test tubes which contain some kind of biological substances. one way to do this action is by using a container which is full of sand that has warmed up before to the desired temprature and put the test tubes in the hole in the middle of the fine sand but it takes too much time cause only one tube can be warmed at a time but ofcourse the temprature gradian is nice and uniform. because of the time problem and the problem of locating and dislocating the test tubes in sand which need an operator I need to warm up test tubes just by heated air flow ( no liquide is useable or permitted) I was wondering if anybody know anything about controllably warming up something by heated air flow. needed temprature is 60 degree centigrad and the tolerance of temprature is just 2 degrees thanks in advance shantia
- posted
17 years ago