Cole-Parmer StableTemp Heat Block; 12 to 13 mm Diameter Test Tubes

Modular blocks are constructed from a solid anodized aluminum block. The close contact of tubes-to-block walls allow for maximum heat retention. Each block has a thermometer well for measuring block temperature.
Test Tube Blocks are single blocks. Blocks are available for test tube sizes from 6mm to 35mm in diameter.

Standard round bottom test tube block holds 12 to 13mm tubes. Single block