200 Piece tiny 0.5 ml clear microcentrifuge tube VIAL container can be widely used for your needs: holding tiny supplies,seed pollen collecting, storing dry things or transporting fluid are all being available. It's always a good choice to check size for your needs.0.2 ml /0.5ml /1.5ml /2 ml / 5ml / 10ml / 15ml / 50 ml are all available in store. Great quality pp comes with great touch. Availble to be Sterilized under high temperature no higher than 121 Celsius degree and high pressure and use after cooling.