Nalgene^® Labtop cooler 

Maintains 12 microtubes below 1 °C for up to 31/2 hr at room temperature.

Molded of durable polycarbonate and filled with non-toxic freezable gel. A convenient alternative to ice buckets for keeping reagents and enzymes cool. Also protects critical samples from temperature fluctuations in the freezer. Holes accommodate tubes:
• 1.5 mL microtubes or cryogenic vials (with adapters to hold 0.5 mL tubes)
• 12-13 mm diameter tubes
• 16-17 mm tubes.
Domed lid permits storage of taller screw cap microtubes. Lids have gridded write-on surfaces for sample identification. Stackable. Usable to −135 °C.

Nalgene is a registered trademark of Nalge Nunc International.