Any cheaper solution of Hannah reagent

[oliveve]

I had used third party reagents for several years back in China, cost just like half, but now couldn't find any in other place of the world

 

[Dread Pirate Dave]

How often do you test?

This was a concern of mine too when I first started testing. I tested often so supplies dwindled quickly. Now that things are pretty stable I don't test as often. The cost of reagents is less of an issue now.