3M LeadCheck Test Confirmation Cards
for 3M LeadCheck Instant Lead Testing Swabs
This is a package of 20 Verification Cards that are used to confirm that your Lead Test Swab is working correctly. Each card has four (4) test spots available on each card.
By dropping a drop of the solution from your activated swab on the test card you will instantly know if your swab is working correctly.
This package of cards will give you 80 verification tests.
We will ship them for free in the continental US