Tubes and caps in the Micrewtube family are certified RNase, DNase, DNA and Pyrogen free
Caps loops are pre-attached but caps are not screwed on and non graduated
The washer seal secured in the top of the cap ensures a positive leakproof seal, time after time, keeping the integrity of small samples under even the most adverse conditions
Caps are supplied with attachment loops, and allow them to remain attached to the tube in order to prevent mix-up and contamination
