Mastelf Autosampler Vials made from borosilicate glass are the best vessels for your laboratory needs because they meet ASTM Type I Class A and USP Type I standards so your lab is more efficient by reducing costs and saving time.

We provide an enormous selection of vials, caps, and accessories that are essential for your laboratory needs. Whether you need small containers for chromatography or sample storage, powerful solutions to preserve your ice-cold concoctions, or solvents for analysis. Find the below we have addressed for your slections.

Using the right septa is vital before starting lab applications. We can commonly provide them in two layers, that is PTFE/Silicone. The PTFE layer is very thin and designed for chemical resistance that is directly approaching the substance that you use (solvents/reagents ), the thick layer of silicone is a very good solution for sealing purposes to prevent contamination, volatilization or dissolving. Also, we can provide synthetic rubber, PP, PE, Viton (FKM) or even three layers of septa. For all of those applications please take a look at the instrument guide (LC-MS, GC-MS, ICP-MS, etc) for the right selections.

  • Screw Snap & Crimp – When you’re able to utilize autosampler vials, the right selection is crucial for improving your test results and will drastically reduce testing time and costs. Screw-type vials can be twisted in stages while snap-type ones are easy to push. Crimp-on vials need to be crimped with a crimping tool in order to function properly.
  • Insert Vial – Interlocked glass vials consist of a glass vial and a clear glass insert fused to it. This fusion eliminates the movement of the insert during shipment, preventing contamination from bacteria around the fused seam from entering the package.
  • V Vial – V Vials are the ideal container to use for storing, shipping, and performing small-scale reactions or centrifugation on samples which can be vitally important for your laboratory uses.
  • Plastic Vial – The environment can cause some undesired reactions between the substances. Therefore, it’s important to make sure that all vials and accessories are compatible with each other. For example, light-sensitive samples are kept in amber glass instead of clear glass. Also, deactivated glass is less likely to produce compounds than plastic vials which can accumulate unwanted elements over time. Finally, volatile fluids require different types of closures that help to seal off the liquid from evaporating.
  • Pre-slit Septa– These pre-slit septa can prevent vacuum build-up from inside of your vial. These tiny slits in the walls of your vials allow air, but not liquid, to seep out. The septum inside this product has already been slit so there’s no need for you to do it yourself. This can save you time if you’re working with multiple vials.
  • Viton Septa– The Viton Septa features excellent chemical resistance. It’s great for use in chlorinated solvents, but it is not recommended for use with amines, pyridine, acetonitrile, DMF, DMSO, or THF. Other incompatible chemicals include dioxane, methanol, or ethyl acetate.

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