I seriously don't know. It only reads PPM and the document that came with it did not say.
Good to hear that Attitude is gonna help you out some. I think if I ever order from them again, I will try some from Serious Seeds. They have been around for a while and don't pad their list just to have a lot of names I hear....
I have the Hanna Pen (reads both ph and ppm) and I can change it to .5 or .7, but I just leave it on .5. I have really hated it since the day I got it, cause its just sooo damn finicky. To PH some water takes forever.
I let Attitude know that I am ready to place my next order and asked how I should go about doing that so I get the Discount/Refund, and this morning got this reply,.
Hi there
We do state that sometimes the free offers will be substituted with no
notice and unfortunately this did happen to your order, I am very sorry for
any disappointment caused by this but the change was intentional.
Many Thanks
The Attitude
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I think she is responding to someone else, cause Substituted Seeds have nothing to do with my order or my issue.
So I sent her back and email to clarify and see if we can get this one the right track.