4 ms·
The LeadCheck swabs are super nice because they package the reagent in binary form in separate sealed glass capsules. As far as I know, this gives the product
by nate_meurer 5y ago
The LeadCheck swabs are super nice because they package the reagent in binary form in separate sealed glass capsules. As far as I know, this gives the product an indefinite shelf life. I'm still using a batch of LeadChecks that bought from Ebay fifteen years ago.