Falcon® Round Bottom Test Tubes, No Cap, Polypropylene Pack Size:1000 The closure on Axygen screw

The closure on Axygen screw cap tubes feature an "O" ring that is manufactured from a specially selected material that is resistant to many commonly used laboratory chemicals

with low-evaporation lid

Convenient

LCD backlit

Falcon® Round Bottom Test Tubes, No Cap, Polypropylene Pack Size:1000 The closure on Axygen screwRobust, durable snap cap makes handling easy Polypropylene tubes are best suited for applications requiring greater thermal and chemical stability Dual position snap caps, heavier gauge walls and unique construction provide a secure, positive seal Medical style packaging materials used on individual product which allow aseptic access