V-CONICALTUBE-1515 mL Conical Centrifuge Tubes are ideal for centrifuging of samples especially sperm and examining them after centrifugation. The tubes also perfectly fit for pre incubation of media and pH measurements. Features Conical shape Blue HDPE 20mm threaded dome seal closures provide positive seal over the full circumference White graduations in 0. 5 mL increments up to 14,5 mL Withstand centrifugation of 1. 800 RCF in a fully supported rotor with room