This laboratory sample bag features a medical-grade leak-proof design, equipped with a professional document pouch function, with leak testing pass rate reaching 99.9%. Made of 4 MIL thickness LDPE material, tear resistance strength of 8.5N, transparency over 95%. The unique external document pouch measures 12 inches × 14 inches, perfectly accommodating A4 laboratory records and test reports. Complies with CAP (College of American Pathologists) and CLIA laboratory certification standards, suitable for clinical, research, pharmaceutical development, and other experimental environments. The dual protection design reduces sample record error rate by 87%, making it an ideal choice for precise experimental management.