FAQ: Why was the previous Proteinase K product (P8102) discontinued?

The old Proteinase K product was discontinued in favor of a higher quality product. By providing the new Proteinase K, Molecular Biology Grade product (P8107) by activity, we are dramatically reducing lot-to-lot activity variations that can occur when selling a product by mass. New QC’s have also been added to ensure that the new Proteinase K material represents a best-in-class product offering.