Ultimate Benchmark Scientific Dc4020 Drychill™ Ice-free Cooling Block, 40 X 1.5/2.0ml Device [5pPb0FxN]

The DryChill cooling blocks are designed to store samples safely
on the lab-bench without sample degradation due to temperature
increase or fluctuation. Unlike traditional ice buckets, these blocks
do not require any ice and are uniquely designed to minimize
condensation, resulting in a convenient, mess-free cooling.
Each DryChill Cooling Block utilizes a proprietary gel refrigerant,
designed to maintain cold (but not freezing) temperatures for
extended time periods. Once the block temperature begins to
warm, the visual indicator alerts the user by changing
from purple to pink.
Four blocks are available for accepting a wide variety of
commonly used research tubes and plates.