Hanna Combo pH/EC/TDS/C/PPM Tester HI98129. Only comes with one pack of unopened solution. Testers works great, like new.This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Hydroponics\Hydroponic Systems, Parts & Accessories\Water Aeration Equipment". The seller is "bvsaleman" and is located in this country: US. This item can be shipped to United States.