I have been using the Hanna Alk checker and a few weeks ago new reagent came in. I was shocked that my Alk was not the 8.0 the checker has been reading. As I dove into it, I learned that it is very easy to contaminate the reagent. My Alk was checking about 10.2 with the new reagent. Over the last several weeks I have been slowly working to bring down. Today I am @ 8.8 so getting there. I have lost one frag to date and noticed it today Lemon lime time acro is gone.![Frown :( :(](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)