Great refill for my Hanna checker. I like they include the syringe which is always handy to have since the lines on the tube start to come off with time. I also like this product has a few year expiry date marked on it and isn't one thats close to expiring.. Will always be buying this from J&L!

This bottle is a quick refill for the Hanna Alkalinity Checker and is very simple to use. Depending on how often you conduct water tests it will last you for a couple months. A must to continue using your Checker.

A quick and easy ALK test