20 mm Screw Top Cap, 20 mm, with PTFE/Silicone Septa, 1000 pc/PAK)

Our closures with septa are made in a wide variety of sizes and materials ensuring you have the right combination for your sample type and analysis temperature. Each product is manufactured using strict quality control standards resulting in consistent cap dimensions with septa which may be certified for higher purity grades. All our caps and septa are packed in a clean environment to ensure you receive contaminant free product every time.