Made of high quality of transparent PP material, the new special design of safe lid can be fitted tightly with the rim of tube, and avoid accidental cap opening during centrifugation and thermal stress, especially applicable for expensive or hazardous samples, etc. The thin membrane lid can be pierced, suitable for the toxic biological substances without generating aerosols.

• Open and close conveniently with one hand
• Special safe-lock cap, tight-fitting lid provides a precise and safety sealing
• Thin membrane lid can be pierced by a syringe
• Accurate molded graduation for volume estimation
• Flat lid and large frosted area on tube for easy sample identification
• Withstand centrifugation up to 15,000 x g