HPLC Autosampler Vials — 2 mL Chromatography Vials

Primary uses

• Presents a prepared sample to an autosampler needle in a defined, repeatable geometry
• Protects the sample from evaporation and light between preparation and injection
• Supports low-volume work through inserts where the available sample is limited

Applications

• HPLC, UHPLC and GC autosampler runs
• Sample storage between preparation and injection
• Low-volume and limited-sample analysis using inserts
• Standard and calibration solution presentation

Advantages

• Standard formats mean a laboratory can hold one vial type across several instruments once the thread and tray are matched
• Amber and clear options let light-sensitive samples be handled in the same workflow as everything else
• Inserts extend the same vial format to low-volume and limited-sample work without a second consumable line

Limitations to consider

• Vial dimensions and closure format are instrument-specific; a vial that fits the tray but not the needle depth will still cause misses
• Glass type and surface treatment affect adsorption of sensitive analytes, and that behaviour is established by verification rather than by a description
• Volume markings and write-on patches vary between items and are not a substitute for a documented sample-identification system
• Every numeric property — assay, purity, residual content, pore size, retention behaviour, ash content, extractables, thickness, capacity and dimensional tolerance — is a property of one manufactured item from one production line. Values are read from the manufacturer's own technical documentation for the exact item offered and confirmed at quotation, never quoted from a category page.
• A manufacturer declaration and a verified result are not the same thing. Declarations state what the manufacturer controls to; suitability inside your own method, matrix and instrument is established by your own verification. Where a result must stand up inside an accredited scope, plan that verification before the item enters routine use.

How to choose the right grade

• Name the instrument and the tray, then work backwards to thread, height and base geometry — that order avoids most of the problems
• Decide screw, crimp or snap first, because it dictates the entire closure programme that goes with the vial
• For limited sample, choose between an insert and a total-recovery design based on how much hold-up volume the method can afford
• Once a consumable is inside a validated method, changing it has a cost: the change has to be justified, trialled and documented. Continuity of the identical item usually matters more than unit price, so state the incumbent item and the property that must be matched when a second source is being qualified.
• Buyers frequently search using the catalogue name of a manufacturer they already use. Those are third-party trademarks belonging to their owners and are never used as an Allzone product identity. Where an equivalent is being considered, equivalence is assessed against the two sets of documentation and confirmed by the laboratory's own verification.
• Exact specification is confirmed against supplier documentation at quotation.

Typical grades

• Variant selection is made on the instrument, apparatus and test method rather than on a grade ladder
• Where a manufacturer operates distinct quality or cleanliness lines for the same item, the line is identified per offer
• Any declared property is read from the manufacturer documentation for the exact item offered, never assumed from a family name
• Regulatory listing, certification, food-contact status and any scheme approval belong to a specific item, facility and jurisdiction, and they change scope over time. State what your programme or customer requires at the enquiry stage so it is checked against current documentation for the offered item rather than assumed from a product name.
• These items are offered for industrial, food, feed, water, environmental and materials-testing work. Nothing here is offered, positioned or documented for medical, clinical, diagnostic or human-specimen use, and no such suitability is implied.