Black 9-425 Open Top Screw Closures Pre-Slit

1) Description

Our Black 9-425 Open Top Screw Closures Pre-Slit are high quality closures designed for laboratory and scientific research needs. These closures are equipped with double/three-layer septa in a variety of materials to accommodate different experimental conditions and chemicals. Its unique open-top design allows direct penetration with a needle for easy sample addition or extraction, while the threaded design ensures the sealing and safety of the vial mouth. The versatility and high-quality material selection of these closures make them an indispensable accessory in laboratory and scientific work, providing reliable sealing and protection solutions whether performing sample analysis, chemical reactions or substance storage.

2) Application

HPLC and GC Autosampler Analysis
Open top caps are used where high-throughput sample analysis via an autosampler is required. This design allows the sampler needle of the autosampler to pass directly through the opening in the cap to extract the sample in the bottle without manually opening the vial cap, improving the efficiency and accuracy of analysis. For laboratories that conduct a large number of sample tests, the use of open top caps with automatic samplers can significantly improve the speed and repeatability of sample processing and reduce human errors during operation.

3)Features

▶ Compatible for short neck ND9 vials(12*32mm) most common used for HPLC/GC.
▶ Pre-slit is special for thin or blunt needles while injection, and can also avoid bubbles during penetration. Extend the usage of needles.

▶ Ribbed cap makes it easier for autosampler to capture.
▶ ISO-certified products with high consistency during each batch.
▶ Broad variety of different septa materials and colors for most applications.
▶ Slit shape choices are Pre-slit, Y-shape, cross-shape available.