I have pulled more autosampler vials out of a jammed tray at 2 a.m. than I care to admit. The pattern is always the same: the run stops, the error log says something unhelpful like “injection failed” or “needle error,” and the root cause turns out to be a 32 by 11.6 mm piece of glass that cost less than a cup of coffee. Vial failures are rarely dramatic. They are quiet, cumulative, and expensive in repeat analysis. This article covers the failures I see most often in...

I have watched a lab save four cents per vial and lose a full day of instrument time to a single crimp that leaked. The vial is the cheapest component in an HPLC or GC workflow and the one most likely to end a run early. After fifteen years of specifying, stocking, and troubleshooting these parts, I can tell you the buying decision is mostly about septa, dimensions, and closure mechanics, not brand loyalty. This guide covers what actually matters when you choose an autosampler vial, with th...

I have spent the last fifteen years on the production floor and in the field, and I can tell you that most autosampler downtime I have seen did not come from a failed pump or a burned-out detector. It came from a two-dollar glass vial. A cracked neck, a septa coring problem, or a cap torqued wrong can take a whole sequence offline at 2 a.m. and cost you a re-run of forty samples. What follows is a field guide to the failures I see most often, what actually causes them, and the specific numb...