I just purchsed a Hach PH tester, ph testr2, online today as well as a couple of thier other water param tests. The PH tester is supposed to come calibrated, is waterproof, is supposed to automatically compensate for temp and the test probe can be replaced if/when it goes bad. Has anyone used one of these or heard anything about them? I'll post more about it once it arrives. It was $79, calibration solution packets, just mix with RO water, were $11.25/50 packets, I got both PH7 and PH10 just to test it and calibrate it if necessary. The PH testr2 is model number 27235-00. if you do a search for it leave the - out of the number, 2723500.
Hach
http://www.hach.com/
ph testr2
http://ecommerce.hach.com/webapp/com...&where=&from2=