2.0ml, graduated in 0.1ml increments to 1.8ml, Polypropylene cap and tube of similar expansion and contraction coefficients for ultra-low freezing without leakage,  Silicone super-seal O-ring, External or internal thread, Large white write panel, Round bottom, Universal rack-interlocking split bottom self-standing skirt.

Pre-fitted cap inserts – Natural, Green, Violet, Red, Pink and Yellow

500pcs per zipperseal polybag