=Freezing Tubes was your best choice for based on the high quality and special features. 
=Manufactured from durable PP and PE 
=Available with 4 volumes of 0.5, 1.5, 1.8 and 5.0ml 
=Freezable at -80℃ 
=Interlocking cap design ensure exact fit and will not absorb water or other contamination 
=Easy-to-read graduations are accurate to±2% 
=Screw cap for one-handed operation 
=Colour-coded cap for easy classify(0.5ml) and large unerasable frosting white writing area provided easy and legible mark (1.5-5.0ml) 
=Conical(0.5ml) and self-standing (1.5-5.0ml) bottom 
=Gamma radiation sterilized 

Ordering information 
=Packaged in easy-to-open plastic bag to assure sterility 
=Every package bag is labeled with lot No.