Alex, chemical compatibility is no problem , however introduce air and most pumps will not work well. I have used a lot of different types of pumps and for pumping aerated solutions and slurries of highly reactive chemicals, (Conc. reagents) I rely on Teflon piston pumps for very small volumes and Teflon diaphragm pumps for larger volumes. Several manufacturers are out there that can supply the pumps , Rupp is one supplier , If you have access to Cole-Parmer catalog they have one listed in there , There are a few companies that advertise in Micro , and Cleanroom magazines. Russ ---------- From: Alex Stennett To: [log in to unmask] Subject: [TN] chemically resistant pump Date: Tuesday, July 21, 1998 12:16PM Can anyone out there help me? I need a pump that will cope with a mix of air and harsh chemistry (conc nitric, peroxide etc) Does anyone know of a good supplier ? rather than advertise feel free to email me direct [log in to unmask] Alex Stennett Research Associate Loughborough University Dept. of Manufacturing Engineering Leics LE11 3TU Tel:- +44 (0)1509 228251 Fax:- +44 (0)1509 267725 ----------------------------------------------------------- Add yourself to my Web address book at http://armadillo.lboro.ac.uk:591 Enter the address_book.FP3 using guest as a password or just visit my homepage ........ http://armadillo.lboro.ac.uk Or take in some small ads ..... http://www.studentmart.com/ ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################ ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################