【NO ADDITIVE DESIGN】:Maintains blood samples in their natural state for accurate coagulation testing, ideal for coagulation blood collecting tubes and laboratory applications. 【PET MATERIAL CONSTRUCTION】:Shatterproof, leak-proof PET blood tubes ensure safe handling during transport, centrifugation, and processing. 【PRECISION VACUUM SEAL】:Guaranteed ±5% fill volume accuracy for reliable lab diagnostics, perfect for centrifuge and venous blood collection tube sets. 【MULTIPLE CAPACITY OPTIONS】:Available in 3ml, 5ml, and 10ml sizes to accommodate diverse testing needs in clinical or research settings. 【PROFESSIONAL CUSTOMER SUPPORT】:Committed to affordable quality – contact us for any questions or assistance, and we’ll respond promptly to ensure your satisfaction.