A comprehensive guide for the entire process of clean control in liquid filling of Vial in accordance with GMP standards
In the pharmaceutical, biological reagent, and medical aesthetic injection industries, the core requirement for liquid filling of Vial is "sterility, no impurities, and no contamination". The cleanliness control at every stage directly determines the safety of the product and compliance with GMP. Any oversight can lead to batch rejection. We have been deeply involved in the field of filling equipment for many years and, based on the practical experience of thousands of enterprises, have dissected the key points of clean control throughout the process.
The first step is pre-treatment of the bottle body to control contamination from the source. During the transfer of Vial, dust, fibers, and even microorganisms are prone to adhere. Our equipment is equipped with three-level pre-cleanliness procedures: 360° high-pressure sterile air washing inside the bottle, negative ion dust removal neutralizing static electricity and removing stubborn impurities, and finally, 100-level hot air sterile drying to ensure that there is no moisture or residue inside the bottle, fully meeting the GMP sterile pre-treatment requirements.
The second step is to prevent secondary contamination during the drug liquid transportation. We use 316L hygienic grade stainless steel storage tanks, with mirror-polished inner walls without any hygiene dead corners; the fully sealed medical silicone tubing is used for transportation, with no exposure or contact throughout the process, combined with two levels of precise filtration to intercept tiny particles, guarding the purity of the drug liquid from the source.
The third step is to strictly control process contamination through precise filling. We use servo-driven high-precision filling heads to achieve drip-free and wall-free filling; the filling station is equipped with 100-level local laminar flow purification hoods, combined with a dedicated dehumidification device to remove drug liquid droplets and prevent cross-contamination of aerosols. The filling error is controlled within ±0.2%, in line with GMP measurement specifications.
The fourth step is to secure the final defense line with capping and sealing. The double-head synchronous capping mechanism has adjustable force, ensuring a flat and tight seal without any leakage; before capping, the bottle caps are disinfected with ultraviolet + ozone twice to achieve a clean closed loop from filling to capping.
The fifth step is to strengthen the ultimate defense line through post-processing. The finished products are inspected by light inspection and sterilization tests to eliminate substandard products; the equipment body has no hygiene dead corners and supports online cleaning and disinfection, significantly reducing the difficulty of daily maintenance.
There are no insignificant steps in liquid filling of Vial. We integrate GMP standards into every detail of the equipment to achieve full-process sterile control, helping enterprises avoid pollution risks and smoothly pass audits, and safeguarding the quality and safety of every bottle product.