To hold up to four dry cells beneath it enables use of one, two, three or four cells.

Single cell holder is a high quality easy to load and easy to remove the standard D size battery. It is fitted on the sturdy plastic base. 4 mm sockets are provided for the output. Two or more cell holders can be used for the parallel or series combinations. Supplied without battery.

• Provides durable and rugged alternative to cardboard or foam racks.
• Can withstand temperature from -90°C to 121°C.
• With distinctive green color on 15 ml and blue color on 50 ml.
• All grids are properly indexed with clear lid that provides easy tube identification.
• Can be autoclaved.

Centrifuge tubes are thick-walled and resistant to mechanical stress