basstrap Posted August 20, 2015 Report Share Posted August 20, 2015 I was helping a friend today. He had is presto pot filled with peanut oil cooked to 350, then he puts his beaker of plastisol in the middle of the pot to keep the plastisol from setting up while he is dipping his tubes. My question is how safe is putting a pyrex beaker in this pot of hot oil? I don't know how much heat a pyrex beaker can take but just seemed on safe to me. Is there a better way for him to do this with out getting himself hurt or someone else? Quote Link to comment Share on other sites More sharing options...
Driftwood Posted August 20, 2015 Report Share Posted August 20, 2015 You can try a small band heater on a pressure pot. Boiling peanut oil and plastisol are not good together. Quote Link to comment Share on other sites More sharing options...
Vodkaman Posted August 20, 2015 Report Share Posted August 20, 2015 I don't see having peanut oil and plastisol in close proximity as a problem, as the oil boiling point temperature is much higher than the working temperatures of the plastic. The problem that I see, is lowering the Pyrex at room temperature into hot oil. The thermal expansion and any faults in the Pyrex could cause a break. The Pyrex of plastisol should be heated to working temperature in a microwave first, to minimize the temperature difference. This is not based on experience, but engineering sense. Dave 1 Quote Link to comment Share on other sites More sharing options...
Travis Posted August 20, 2015 Report Share Posted August 20, 2015 My biggest concern would be the stinking mess one has with peanut oil (oils in general). I absolutely hate using silicone oil baths at work when heating beakers because of the constant mess one has to deal with. 1 Quote Link to comment Share on other sites More sharing options...
basstrap Posted August 21, 2015 Author Report Share Posted August 21, 2015 Driftwood, I do like your ideal about the band heater. After doing some research it looks a lot safer then what he is doing. Thank You Quote Link to comment Share on other sites More sharing options...
basstrap Posted August 21, 2015 Author Report Share Posted August 21, 2015 Dave, As Travis mention it does make a mess. When he switches beaker's oil drip's all over the floor and table making everything slimy. Sooner or later someone is going to get hurt. 1 Quote Link to comment Share on other sites More sharing options...
