"tube coolers"

This Promega offers enhanced amplification over conventional Taq DNA polymerases. Supplied with 5X colorless reaction buffer and a 5X green buffer, which both allow for direct loading into agarose gels with no loading dye required. The included 5X green buffer allows you to visualize migration during electrophoresis. Each tube contains 100 U at 5 U/μl. Note: Requires storage at − 20°C.