Which Hanna PH Tester ?

[427HISS]

Years ago, I had the Pinpoint tester for just one tank, but now we're planing on a few, so I'm looking at the pen type.

American Marine Pinpoint pH Monitor
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=4482

This model or others below ?

http://www.amazon.com/Hanna-Waterpt...id=1407602184&sr=8-1&keywords=hannah+ph+meter

http://www.amazon.com/s/?ie=UTF8&ke...vptwo=&hvqmt=b&hvdev=t&ref=pd_sl_1lxdlzpe2h_b

 

[427HISS]

Anyone ?

 

[427HISS]

Bump......

 

[ethridge78]

I haven't tried those just the Milwaukee and I like them.

 

[427HISS]

The Milwaukee is setup using two calibrations using only the 7, where the Hanna is 7 and 4. Why the difference ?

 

[msderganc]

For saltwater, you want to calibrate using the 7 and 10 solutions. A single point calibration would be inaccurate.