High Quality 30ml Square PETG Media Bottles Sterile Closure OEM Customizable Storage Sampling Active Pharmaceutical. Sterile & Safe Material: PETG material, enzyme-free, pyrogen free, cytotoxic free, suitable for sensitive substances. OEM & Customization: Supports OEM, custom logo, and flexible customization from designs or samples. Clean Workshop Production: Produced in a 100,000 clean workshop ensuring high quality and sterility. Leak-Proof Design: Square design with HDPE screw cap, leak-proof and graduated for accurate measurement. Low Gas Permeability: Low CO2 and O2 permeability, ideal for storing pH-sensitive laboratory liquids. Certified Quality: Manufactured under ISO, ISO13485, and ISO9001 certified management systems. Fast Sample Lead Time: Sample delivery within one week; sample cost returned upon placing an order. Flexible Payment Terms: Accepts LC at sight, T/T, D/P, Western Union, and PayPal for secure transactions.