Although they are very similar specifications, the detail is in the specification variations such that we often come across mis-matched caps and vials due to manufacturing tolerance changes in both vials and caps such that they will not sit properly. This is the reason we focus very heavily on Kit offereings where the vials, caps and septa are matched as part of teh QC process.

When it comes to analytical work, precision is everything. Using matched vials and caps in a pre-configured kit isn’t just convenient—it’s a game-changer for reliable results. Here’s why:
✅ Perfect Compatibility: Kits eliminate the guesswork. Matched vials and caps ensure a secure fit, preventing leaks, evaporation, or contamination that can compromise your samples. Buying separately risks mismatched threads or seals, which can disrupt critical tasks and lead to costly errors.
✅ Certified for Fit and Function: Every component in a kit is rigorously tested to meet exacting standards for fit and performance. No more worrying about inconsistent seals or unreliable closures that could jeopardize your experiments.
✅ LC and Mass Spec Cleanliness: Most importantly, kits are certified for liquid chromatography (LC) and mass spectrometry (Mass Spec) cleanliness. This ensures your samples remain free from contaminants that could skew results, saving you time and ensuring accuracy in your analytical workflows.
Don’t let incompatible components derail your research. Choose pre-matched kits for precision, reliability, and peace of mind in every experiment.