O.K. guys I'll make a one time offer for the next 24 hrs. only ! After that they are going to auction and I'm confident they'll sell just fine. These units are virtually new, and complete kits still in their original packaging. All I am offering you is research grade instrumentation at hobbiest prices. Feel free to shop the prices for either one of these.

I'll offer the Thermo 810 meter for $225.00 and the Oakton DO/PH 300 for $350.00. You can PM me or respond to dutchmanmk5@aol.com