These 16 x 100 mm screw cap test tubes are in crystal clear polystyrene with a traditional round bottom. Each tube has easy to read graduations and a “frosted” white marking area (12x50mm). Packed 100 tubes (with attached caps) per sterile bag, 10 bags per unit.

• Leak-proof screw caps

• White printed graduations

• Sterile bags of 100 tubes

• White marking spot

• round bottom