I believe Raj wrote this email section below: > Great price, useful gizmo! I got mine on eBay. You do need calibration liquids. -- Stuart Halliday http://mytriops.com/ 200 Million years in the making... _______________________________________________ Aquatic-Plants mailing list Aquatic-Plants at actwin_com http://www.actwin.com/mailman/listinfo/aquatic-plants