Green BioResearch 4ml screw cap tubes, freezer tubes are made of clear polypropylene. Super clear, non-graduation on the tube wall. The maximal liquid volume is 4.2 milliliters. These tubes come with clear and yellow colored screw caps.
We have clear/natural and yellow colored caps are in stock.
The shipping cost for each order placed is $9.50, but will be automatically waived at checkout on orders of $200 and up.