We always make our batches as large as possible. We understand that you might need vials from a rather old batch for your research project. Some of our batches are mentioned in renowned literature and you use this as a guideline for your study. We do have a relatively large stock on some old batches, but some are (almost) running out. We have made an extensive comparison on our batches so you can easily pick a fresh batch that lives up to your standards.

You can find yourself a comparable fresher batch here.