Most suppliers grade in gradients, a premium line and a cheaper one. We refuse the gradient. Everything in this store, from a 50 mg vial to a pack of amber glass, is held to a single release specification and shipped with the record that proves it.

OBSIDIAN began as one bench, one column and one obsession with the number at the bottom of the certificate. The catalog has grown. The floor has not moved. Supplied for laboratory research use only.