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The Australian Customer’s V947 Autosampler Vial Order is Completed
The Australian Customer’s V947 Autosampler Vial Order is Completed
American Customer Ordered 100,000 Boxes of 9-425 2ml HPLC Vials
American Customer Ordered 100,000 Boxes of 9-425 2ml HPLC Vials
5000-boxes-of-blue-screw-cap-10-425-hplc-vial-sent-to-singapore
5000-boxes-of-blue-screw-cap-10-425-hplc-vial-sent-to-singapore
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Why hplc vial failures are usually a systems problem
Why hplc vial failures are usually a systems problem
April 5, 2018
Why hplc vial failures are usually a systems problem
I have watched a lot of good chromatography go bad because of a 32 x 11.6 mm piece of glass. After fifteen years running a consumables operation, I keep a running list of the vial failures that show up in customer labs week after week. Most of them are not mystery problems. They are predictable, repeatable, and traceable to a handful of root causes: the wrong septa, the wrong crimp, the wrong cap torque, or a vial that was never designed for the autosampler it sits in. This article is the f...
Why the vial is part of the method, not an accessory
Why the vial is part of the method, not an accessory
April 5, 2018
Why the vial is part of the method, not an accessory
I have specified, bought, and rejected more HPLC vials than I care to count. The one that finally taught me the lesson was a 2 mL clear glass vial with a thin crimp neck that looked perfect on the quote sheet and then shed a glass particle into the autosampler needle on the third injection of a 96-well run. We lost a day, an analyst’s patience, and a client sample we could not re-collect. Since then I treat vial selection as an engineering decision, not a catalog pick. This guide is w...
Failure mode 1: septum coring and needle damage
Failure mode 1: septum coring and needle damage
April 5, 2018
Failure mode 1: septum coring and needle damage
I have watched a vial ruin a perfectly good sequence more times than I care to admit. The first time it happened, I was a junior analyst running a 96-well autosampler overnight and came back to a chromatogram that looked like a seismograph. The column was fine. The mobile phase was fresh. The problem was a batch of 2 mL vials with septum liners that had been sitting on the shelf for two years, and the silicone had hardened enough that the needle punched a core straight into the sample. That...