Inquiry (采购产品): nitrogen evaporators Dear sales representative, would you please send me the prices for the nitrogen evaporator you sell. I have a question, can you select certain needles to be on or off and are they removable for cleaning by rinsing in organic solvents. thank you, Peter Mansour **** Hidden Message ***** Peter Mansour AUS Company: CSIRO E-mail: peter.mansour@csiro.au **** Hidden Message ***** peter.mansour@csiro.au