I got this one: Milwaukee pH600-AQ Pocket pH Meter Aquarium/Pool/pH 600 - (eBay item 280159031764 end time Nov-30-07 20:42:24 PST) from a shop on eBay ... his eBay 'store' has several good items besides this tester ... I tried to find better prices on a couple items, and couldn't ...:smokin: