will this work for a hydro ph meter?

I found this on another threat/forum, i don't remember really but i was wondering if i could use it i a hyrdo solution and get accurate results?

http://www.parkseed.com/webapp/wcs/stores/servlet/StoreCatalogDisplay?storeId=10101&catalogId=10101&langId=-1&mainPage=prod2working&ItemId=96078&cid=pport0001&CAWELAID=63705151

sorry no....thats a soil meter......