
Premium Screw-Cap Test Tube for Laboratory Use Conical-Bottom Type. Superior Material Compatibility: Made of PE, PP, PS with excellent resistance to weak acids, bases, and organic solvents. High-Speed Centrifuge Stability: Selected products withstand centrifuge speeds up to 5000 rpm without cracking or leakage. Comprehensive Certifications: Certified with CE, ISO, and RoHS standards for medical and laboratory safety. Free Sample Availability: Free samples are provided for customers to evaluate product quality before ordering. OEM and ODM Services: Custom logo and design printing available for personalized product branding. Fast Delivery from Stock: All products are in stock with delivery typically completed within 1 week. 24-Hour Online Support: Round-the-clock online guidance and warranty services for customer assistance. Diverse Size Options: Multiple sizes and types available to meet various laboratory test requirements.