AL-6 is the box type. The cell type is not changeable.
Here is a link to the test kit. They also have a TF-100, which is a good full kit if you need one.
K-1766 Taylor Salt Test
Test Kits
Here is a link to the test kit. They also have a TF-100, which is a good full kit if you need one.
K-1766 Taylor Salt Test
Test Kits