Externally Threaded Graduated Sample Tubes

The innovative external thread design eliminates internal grooves where contaminants or sample material could become trapped, while the matching polypropylene screw caps ensure leakproof sealing through identical thermal expansion coefficients. Each cap features a polypropylene inner lip that maintains secure closure even during temperature fluctuations, combined with a long skirt and super-fast thread design enabling single-turn removal or sealing for efficient sample processing. Available with optional silicone o-ring seals and in a variety of colors for sample organization and identification, these tubes provide versatile solutions for diverse biological sample management requirements. Note that screw caps are sold separately to allow customization based on specific application needs.

Features:

• Designed for storage and transportation of biological materials
• Manufactured from non-toxic polypropylene for safety and reliability
• Graduated markings for precise volume measurement
• Excellent strength and clarity for sample visibility
• External threads provide smooth, uniform inner surface
• Smooth inner surface reduces contamination risk and facilitates cleaning
• Polypropylene screw caps match tube thermal expansion coefficient
• Polypropylene inner lip ensures leakproof seal
• Maintains secure closure even at changing temperatures
• Long skirt design provides secure grip and handling
• Super-fast thread design allows single-turn removal or sealing
• Available with or without silicone o-ring for enhanced sealing
• Multiple cap colors available for sample organization and identification

Please Note: Screw Caps are sold separately for application-specific customization.