Test Tube Cap

This is a high-quality, ventilated cap for test tubes, sizes M and L.

Application

This cap can be used instead of a cotton plug. Especially when a colony is very young (a few workers), breeding and feeding can take place in the test tube, and this cap comes in handy. The cap can also be used well during periods like winter dormancy.

Specifications

The cap has a length of approximately 3.5 cm. The inner diameter is approximately 12 mm and the outer diameter is approximately 19 mm. This means the cap can be used for all test tubes up to a diameter of 18 mm.