--- title: Chromatography Direct Blog | Same product better prices | Chromatography Direct description: Explore essential techniques & products in Chromatography & Mass Spec, including Flash , Sample Preparation, & Vials/Caps for efficient analysis. --- [Skip to content](https://blog.chromatographydirect.com/author/chromatography-direct/page/1#main-content) [![cd-logo-header](https://blog.chromatographydirect.com/hs-fs/hubfs/Logos/cd-logo-header.png?width=180&height=68&name=cd-logo-header.png)](https://www.chromatographydirect.com/) - [Products](https://www.chromatographydirect.com/products/vials-and-caps) Show submenu for Products - [Vials & Caps](https://www.chromatographydirect.com/products/vials-and-caps) - [Sample Preparation](https://info.chromatographydirect.com/uct-sample-preparation-products-chromatography-direct) - [Filtration Products](https://www.chromatographydirect.com/products/filtration-products) - [LC Columns & Accessories](https://www.chromatographydirect.com/products/lc-columns-and-accessories) - [Instrument Spares](https://www.chromatographydirect.com/products/instrument-spares) - [Plates & Mats](https://www.chromatographydirect.com/products/plates-and-mats) - [Flash Chromatography](https://www.chromatographydirect.com/products/flash-chromatography) - [Solvent Safety](https://www.chromatographydirect.com/products/solvent-safety) - [GC Columns & Accessories](https://www.chromatographydirect.com/products/gc-columns-and-accessories) - [Dissolution](https://www.chromatographydirect.com/products/dissolution) - [Clinical Kits, Standards and Controls](https://www.chromatographydirect.com/products/clinical-kits-standards-and-controls) - [New Products](https://www.chromatographydirect.com/new-products) - [Knowledge Base](https://www.chromatographydirect.com/knowledge-base) - [About Us](https://www.chromatographydirect.com/about-us) - [Offers](https://www.chromatographydirect.com/offers) - [Blog](https://blog.chromatographydirect.com) Open main navigation Close main navigation - [Products](https://www.chromatographydirect.com/products/vials-and-caps) Show submenu for Products - [Vials & Caps](https://www.chromatographydirect.com/products/vials-and-caps) - [Sample Preparation](https://info.chromatographydirect.com/uct-sample-preparation-products-chromatography-direct) - [Filtration Products](https://www.chromatographydirect.com/products/filtration-products) - [LC Columns & Accessories](https://www.chromatographydirect.com/products/lc-columns-and-accessories) - [Instrument Spares](https://www.chromatographydirect.com/products/instrument-spares) - [Plates & Mats](https://www.chromatographydirect.com/products/plates-and-mats) - [Flash Chromatography](https://www.chromatographydirect.com/products/flash-chromatography) - [Solvent Safety](https://www.chromatographydirect.com/products/solvent-safety) - [GC Columns & Accessories](https://www.chromatographydirect.com/products/gc-columns-and-accessories) - [Dissolution](https://www.chromatographydirect.com/products/dissolution) - [Clinical Kits, Standards and Controls](https://www.chromatographydirect.com/products/clinical-kits-standards-and-controls) - [New Products](https://www.chromatographydirect.com/new-products) - [Knowledge Base](https://www.chromatographydirect.com/knowledge-base) - [About Us](https://www.chromatographydirect.com/about-us) - [Offers](https://www.chromatographydirect.com/offers) - [Blog](https://blog.chromatographydirect.com) - [Contact us](https://info.chromatographydirect.com/contact-chromatography-direct) [Contact us](https://info.chromatographydirect.com/contact-chromatography-direct) --- This is a search field with an auto-suggest feature attached. - There are no suggestions because the search field is empty. ### Filter By Topic - [2 bridge peristaltic tubing (1)](https://blog.chromatographydirect.com/tag/2-bridge-peristaltic-tubing) - [3 bridge collared tubing (1)](https://blog.chromatographydirect.com/tag/3-bridge-collared-tubing) - [aminopropyl (1)](https://blog.chromatographydirect.com/tag/aminopropyl) - [Autosampler (1)](https://blog.chromatographydirect.com/tag/autosampler) - [C18 (1)](https://blog.chromatographydirect.com/tag/c18) - [cellulose acetate membrane filter (1)](https://blog.chromatographydirect.com/tag/cellulose-acetate-membrane-filter) - [ChloroFiltr (1)](https://blog.chromatographydirect.com/tag/chlorofiltr) - [Chromatography (48)](https://blog.chromatographydirect.com/tag/chromatography) - [ciguatoxins (1)](https://blog.chromatographydirect.com/tag/ciguatoxins) - [clean screen (4)](https://blog.chromatographydirect.com/tag/clean-screen) - [Clean Screen XCEL II (1)](https://blog.chromatographydirect.com/tag/clean-screen-xcel-ii) - [cleanup (2)](https://blog.chromatographydirect.com/tag/cleanup) - [Clinical/Forensic (3)](https://blog.chromatographydirect.com/tag/clinical-forensic) - [CSDAU (1)](https://blog.chromatographydirect.com/tag/csdau) - [CUNAX (1)](https://blog.chromatographydirect.com/tag/cunax) - [DAU (1)](https://blog.chromatographydirect.com/tag/dau) - [Detector Lamps (1)](https://blog.chromatographydirect.com/tag/detector-lamps) - [Dissolution (1)](https://blog.chromatographydirect.com/tag/dissolution) - [echld (1)](https://blog.chromatographydirect.com/tag/echld) - [Electron Multipliers (1)](https://blog.chromatographydirect.com/tag/electron-multipliers) - [Enviro-Clean (1)](https://blog.chromatographydirect.com/tag/enviro-clean) - [Environmental (5)](https://blog.chromatographydirect.com/tag/environmental) - [Filter Vials (1)](https://blog.chromatographydirect.com/tag/filter-vials) - [Filtration (1)](https://blog.chromatographydirect.com/tag/filtration) - [Flame Retardants (1)](https://blog.chromatographydirect.com/tag/flame-retardants) - [Flash Chromatography (4)](https://blog.chromatographydirect.com/tag/flash-chromatography) - [FPLC (1)](https://blog.chromatographydirect.com/tag/fplc) - [Gas Chromatography (1)](https://blog.chromatographydirect.com/tag/gas-chromatography) - [Gas Filters (3)](https://blog.chromatographydirect.com/tag/gas-filters) - [GC Columns (4)](https://blog.chromatographydirect.com/tag/gc-columns) - [GC-MS (1)](https://blog.chromatographydirect.com/tag/gc-ms) - [Ghost Peaks (1)](https://blog.chromatographydirect.com/tag/ghost-peaks) - [HPLC Columns (1)](https://blog.chromatographydirect.com/tag/hplc-columns) - [HPLC Pump (3)](https://blog.chromatographydirect.com/tag/hplc-pump) - [ICP signal drift (1)](https://blog.chromatographydirect.com/tag/icp-signal-drift) - [ICP Tubing (1)](https://blog.chromatographydirect.com/tag/icp-tubing) - [ICP tubing UK supplier (1)](https://blog.chromatographydirect.com/tag/icp-tubing-uk-supplier) - [ICP-MS (1)](https://blog.chromatographydirect.com/tag/icp-ms) - [Instrument Spares (4)](https://blog.chromatographydirect.com/tag/instrument-spares) - [ketamine (1)](https://blog.chromatographydirect.com/tag/ketamine) - [Laboratory Safety (3)](https://blog.chromatographydirect.com/tag/laboratory-safety) - [LC-MS/MS (3)](https://blog.chromatographydirect.com/tag/lc-ms-ms) - [Mass Spec (1)](https://blog.chromatographydirect.com/tag/mass-spec) - [membrane filter (2)](https://blog.chromatographydirect.com/tag/membrane-filter) - [membrane filter HPLC (1)](https://blog.chromatographydirect.com/tag/membrane-filter-hplc) - [membrane filtration method (1)](https://blog.chromatographydirect.com/tag/membrane-filtration-method) - [Modus (1)](https://blog.chromatographydirect.com/tag/modus) - [Modus Flash (1)](https://blog.chromatographydirect.com/tag/modus-flash) - [nylon membrane filter vs PTFE (1)](https://blog.chromatographydirect.com/tag/nylon-membrane-filter-vs-ptfe) - [OEM (2)](https://blog.chromatographydirect.com/tag/oem) - [Organophosphate (1)](https://blog.chromatographydirect.com/tag/organophosphate) - [OTM (1)](https://blog.chromatographydirect.com/tag/otm) - [PCR (3)](https://blog.chromatographydirect.com/tag/pcr) - [Perfluoroalkyl (1)](https://blog.chromatographydirect.com/tag/perfluoroalkyl) - [peristaltic pump tubing material (1)](https://blog.chromatographydirect.com/tag/peristaltic-pump-tubing-material) - [Peristaltic Tubing (3)](https://blog.chromatographydirect.com/tag/peristaltic-tubing) - [peristaltic tubing chemical compatibility (1)](https://blog.chromatographydirect.com/tag/peristaltic-tubing-chemical-compatibility) - [PES syringe filter (1)](https://blog.chromatographydirect.com/tag/pes-syringe-filter) - [Pesticide Residues (1)](https://blog.chromatographydirect.com/tag/pesticide-residues) - [PFAS (1)](https://blog.chromatographydirect.com/tag/pfas) - [pH Meters (1)](https://blog.chromatographydirect.com/tag/ph-meters) - [Pharmaprene tubing (1)](https://blog.chromatographydirect.com/tag/pharmaprene-tubing) - [Pipette Tips (1)](https://blog.chromatographydirect.com/tag/pipette-tips) - [Plates (1)](https://blog.chromatographydirect.com/tag/plates) - [prefiltered syringe filter (1)](https://blog.chromatographydirect.com/tag/prefiltered-syringe-filter) - [QuEChERS (5)](https://blog.chromatographydirect.com/tag/quechers) - [Safety (6)](https://blog.chromatographydirect.com/tag/safety) - [Sample Preparation (17)](https://blog.chromatographydirect.com/tag/sample-preparation) - [SepaBean (1)](https://blog.chromatographydirect.com/tag/sepabean) - [silanes (1)](https://blog.chromatographydirect.com/tag/silanes) - [Solvent Safety (4)](https://blog.chromatographydirect.com/tag/solvent-safety) - [Solvents (5)](https://blog.chromatographydirect.com/tag/solvents) - [SPE (7)](https://blog.chromatographydirect.com/tag/spe) - [spe News (1)](https://blog.chromatographydirect.com/tag/spe-news) - [specialities (2)](https://blog.chromatographydirect.com/tag/specialities) - [syringe filter for HPLC (1)](https://blog.chromatographydirect.com/tag/syringe-filter-for-hplc) - [syringe filter high particulate samples (1)](https://blog.chromatographydirect.com/tag/syringe-filter-high-particulate-samples) - [Syringe Filters (7)](https://blog.chromatographydirect.com/tag/syringe-filters) - [Syringes (3)](https://blog.chromatographydirect.com/tag/syringes) - [T1750 (1)](https://blog.chromatographydirect.com/tag/t1750) - [tetrabutoxysilane (1)](https://blog.chromatographydirect.com/tag/tetrabutoxysilane) - [Thermal Desorption (1)](https://blog.chromatographydirect.com/tag/thermal-desorption) - [Toxicology (1)](https://blog.chromatographydirect.com/tag/toxicology) - [trichlorosilane (1)](https://blog.chromatographydirect.com/tag/trichlorosilane) - [Tubing (1)](https://blog.chromatographydirect.com/tag/tubing) - [Tygon alternative (1)](https://blog.chromatographydirect.com/tag/tygon-alternative) - [UCT (8)](https://blog.chromatographydirect.com/tag/uct) - [UHPLC Columns (1)](https://blog.chromatographydirect.com/tag/uhplc-columns) - [Vials & Caps (8)](https://blog.chromatographydirect.com/tag/vials-caps) - [water testing (1)](https://blog.chromatographydirect.com/tag/water-testing) - [Xcel (1)](https://blog.chromatographydirect.com/tag/xcel) - [XtrackT (2)](https://blog.chromatographydirect.com/tag/xtrackt) # Chromatography Direct Blog ###### Savings and ideas for Chromatography and Mass Spec ## [How to Choose Vials for Light-Sensitive HPLC Samples](https://blog.chromatographydirect.com/how-to-choose-vials-for-light-sensitive-hplc-samples) Some samples start degrading the moment they're exposed to lab light. If your peak areas drop across... [Read more](https://blog.chromatographydirect.com/how-to-choose-vials-for-light-sensitive-hplc-samples) [![Syringe Filters from £1.30 Each: Why Labs Are Switching](https://blog.chromatographydirect.com/hubfs/Syringe%20Filters/500x300-Syringe-Filters.jpg)](https://blog.chromatographydirect.com/1.30-per-filter-why-labs-are-switching-syringe-filter-supplier) ## [£1.30 Per Filter: Why Labs Are Switching Syringe Filter Supplier](https://blog.chromatographydirect.com/1.30-per-filter-why-labs-are-switching-syringe-filter-supplier) Syringe filters are a consumable. They get used once and binned. So why are labs still paying £3 to ... [Read more](https://blog.chromatographydirect.com/1.30-per-filter-why-labs-are-switching-syringe-filter-supplier) [![Why ICP Signal Drift Usually Starts at the Pump Tubing](https://blog.chromatographydirect.com/hubfs/Canva%20images/600%20x%20308%20CD%20Blog%20Collared%20Tubing.png)](https://blog.chromatographydirect.com/icp-signal-drifting-check-the-pump-tubing-before-you-blame-the-plasma) ## [ICP Signal Drifting? Check the Pump Tubing Before You Blame the Plasma](https://blog.chromatographydirect.com/icp-signal-drifting-check-the-pump-tubing-before-you-blame-the-plasma) Your internal standard was flat for the first forty samples. By sample 150, it's down 15%, and you'r... [Read more](https://blog.chromatographydirect.com/icp-signal-drifting-check-the-pump-tubing-before-you-blame-the-plasma) [![PES vs Nylon vs PTFE Syringe Filters: Which Membrane Do You Need?](https://blog.chromatographydirect.com/hubfs/Syringe%20Filters/500x300-Syringe-Filters.jpg)](https://blog.chromatographydirect.com/pes-vs-nylon-vs-ptfe-picking-the-right-syringe-filter-membrane) ## [PES vs Nylon vs PTFE: Picking the Right Syringe Filter Membrane](https://blog.chromatographydirect.com/pes-vs-nylon-vs-ptfe-picking-the-right-syringe-filter-membrane) People treat syringe filter membrane choice as either trivially obvious or impossibly complex, and i... [Read more](https://blog.chromatographydirect.com/pes-vs-nylon-vs-ptfe-picking-the-right-syringe-filter-membrane) [![Bridge vs 3-Bridge Collared Tubing Explained](https://blog.chromatographydirect.com/hubfs/Canva%20images/600%20x%20308%20CD%20Blog%20Collared%20Tubing.png)](https://blog.chromatographydirect.com/2-bridge-or-3-bridge-how-to-read-collared-peristaltic-tubing) ## [2-Bridge or 3-Bridge? How to Read Collared Peristaltic Tubing](https://blog.chromatographydirect.com/2-bridge-or-3-bridge-how-to-read-collared-peristaltic-tubing) Collared tubing is described in shorthand that makes perfect sense once someone explains it, and abs... [Read more](https://blog.chromatographydirect.com/2-bridge-or-3-bridge-how-to-read-collared-peristaltic-tubing) [![Chromatography Direct Modus Flash Columns](https://blog.chromatographydirect.com/hubfs/Modus%20Flash/500x350-Modus-Flash.jpg)](https://blog.chromatographydirect.com/hplc-wear-items-the-small-parts-that-prevent-big-problems) ## [HPLC Wear Items: The Small Parts That Prevent Big Problems](https://blog.chromatographydirect.com/hplc-wear-items-the-small-parts-that-prevent-big-problems) Not every instrument problem traces back to a major component. More often, it's the small, overlooke... [Read more](https://blog.chromatographydirect.com/hplc-wear-items-the-small-parts-that-prevent-big-problems) [![Collared Tubing](https://blog.chromatographydirect.com/hubfs/Canva%20images/600%20x%20308%20CD%20Blog%20Collared%20Tubing.png)](https://blog.chromatographydirect.com/choosing-peristaltic-pump-tubing-pvc-solva-viton-or-pharmaprene) ## [Choosing Peristaltic Pump Tubing: PVC, Solva, Viton or Pharmaprene?](https://blog.chromatographydirect.com/choosing-peristaltic-pump-tubing-pvc-solva-viton-or-pharmaprene) Most pump tubing failures aren't pump failures. They're material choices that were never really made... [Read more](https://blog.chromatographydirect.com/choosing-peristaltic-pump-tubing-pvc-solva-viton-or-pharmaprene) [![Chromatography Direct Modus Flash Columns](https://blog.chromatographydirect.com/hubfs/Modus%20Flash/500x350-Modus-Flash.jpg)](https://blog.chromatographydirect.com/hplc-detector-lamps-and-spares-dont-wait-for-the-warning-light) ## [HPLC Detector Lamps and Spares: Don't Wait for the Warning Light](https://blog.chromatographydirect.com/hplc-detector-lamps-and-spares-dont-wait-for-the-warning-light) A failing detector lamp doesn't announce itself with an error message. It fades. Sensitivity drops, ... [Read more](https://blog.chromatographydirect.com/hplc-detector-lamps-and-spares-dont-wait-for-the-warning-light) [![](https://blog.chromatographydirect.com/hubfs/Blog%20Images/syringe-filters-blog.jpg)](https://blog.chromatographydirect.com/nylon-vs-ptfe-vs-cellulose-acetate-which-47mm-membrane-filter-do-you-actually-need) ## [Nylon vs PTFE vs Cellulose Acetate: Which 47mm Membrane Filter Do You Actually Need?](https://blog.chromatographydirect.com/nylon-vs-ptfe-vs-cellulose-acetate-which-47mm-membrane-filter-do-you-actually-need) You've got a sample to filter and five membrane options staring at you. Pick wrong and you'll dissol... [Read more](https://blog.chromatographydirect.com/nylon-vs-ptfe-vs-cellulose-acetate-which-47mm-membrane-filter-do-you-actually-need) [![Why Your Syringe Filters Block Mid-Sample (And the Simple Fix)](https://blog.chromatographydirect.com/hubfs/Syringe%20Filters/500x300-Syringe-Filters.jpg)](https://blog.chromatographydirect.com/syringe-filters-blocking-mid-sample-youre-missing-a-prefilter) ## [Syringe Filters Blocking Mid-Sample? You're Missing a Pre-filter](https://blog.chromatographydirect.com/syringe-filters-blocking-mid-sample-youre-missing-a-prefilter) You're halfway through pushing a 10 mL environmental water sample when the plunger locks up. The 0.4... [Read more](https://blog.chromatographydirect.com/syringe-filters-blocking-mid-sample-youre-missing-a-prefilter) [![Chromatography Direct Modus Flash Columns](https://blog.chromatographydirect.com/hubfs/Modus%20Flash/500x350-Modus-Flash.jpg)](https://blog.chromatographydirect.com/modus-flash-columns-premium-purification-without-the-premium-price-tag) ## [Modus Flash Columns: Premium Purification Without the Premium Price Tag](https://blog.chromatographydirect.com/modus-flash-columns-premium-purification-without-the-premium-price-tag) If you're running flash chromatography in your lab, you already know columns are a recurring cost th... [Read more](https://blog.chromatographydirect.com/modus-flash-columns-premium-purification-without-the-premium-price-tag) [![Chromatography Direct Modus Flash Columns](https://blog.chromatographydirect.com/hubfs/Canva%20images/Untitled%20(900%20x%20300%20px)-1.png)](https://blog.chromatographydirect.com/hplc-pump-spares-keep-your-system-running-without-breaking-the-budget) ## [HPLC Pump Spares: Keep Your System Running Without Breaking the Budget](https://blog.chromatographydirect.com/hplc-pump-spares-keep-your-system-running-without-breaking-the-budget) Your HPLC pump is the heart of your system. When it fails, everything stops. The good news? Most pum... [Read more](https://blog.chromatographydirect.com/hplc-pump-spares-keep-your-system-running-without-breaking-the-budget) [![Autosampler PM Kit](https://blog.chromatographydirect.com/hubfs/Canva%20images/Canva%20Export.png)](https://blog.chromatographydirect.com/hplc-autosampler-spares-the-parts-your-injector-needs-before-it-tells-you) ## [HPLC Autosampler Spares: The Parts Your Injector Needs Before It Tells You](https://blog.chromatographydirect.com/hplc-autosampler-spares-the-parts-your-injector-needs-before-it-tells-you) Autosampler problems are insidious. Unlike an obvious pump failure, a worn rotor seal or damaged nee... [Read more](https://blog.chromatographydirect.com/hplc-autosampler-spares-the-parts-your-injector-needs-before-it-tells-you) [![](https://blog.chromatographydirect.com/hubfs/Blog%20Images/syringe-filters-blog.jpg)](https://blog.chromatographydirect.com/how-to-choose-the-right-membrane-filter-for-water-testing) ## [How to Choose the Right Membrane Filter for Water Testing (Without Overpaying)](https://blog.chromatographydirect.com/how-to-choose-the-right-membrane-filter-for-water-testing) If you're running the membrane filtration method in your lab, you already know the drill: filter, in... [Read more](https://blog.chromatographydirect.com/how-to-choose-the-right-membrane-filter-for-water-testing) [![Urine and Hair Analysis for Opiates](https://blog.chromatographydirect.com/hubfs/Canva%20images/600%20x%20308%20CD%20Blog%20UCT%20-%20Urine%20and%20Hair%20Analysis.png)](https://blog.chromatographydirect.com/poppy-seeds-and-false-positive-opiate-tests-hair-spe-with-clean-screen-dau) ## [Poppy Seeds and False Positive Opiate Tests: Hair SPE with Clean Screen DAU](https://blog.chromatographydirect.com/poppy-seeds-and-false-positive-opiate-tests-hair-spe-with-clean-screen-dau) The Problem Poppy seeds causing a positive drug test isn't an urban legend. It's a documented forens... [Read more](https://blog.chromatographydirect.com/poppy-seeds-and-false-positive-opiate-tests-hair-spe-with-clean-screen-dau) [![A Method for Emerging Contaminants from Tire Particles in Salmon](https://blog.chromatographydirect.com/hubfs/Canva%20images/600%20x%20308%20CD%20Blog%20UCT%20-%20Emerging%20Contaminants.png)](https://blog.chromatographydirect.com/quinone-in-salmon-tissue-a-quechers-spe-method) ## [6PPD-Quinone in Salmon Tissue: A QuEChERS SPE Method for Tire-Derived Contaminants](https://blog.chromatographydirect.com/quinone-in-salmon-tissue-a-quechers-spe-method) The Problem For over 20 years, coho salmon populations in Washington State's Puget Sound have suffer... [Read more](https://blog.chromatographydirect.com/quinone-in-salmon-tissue-a-quechers-spe-method) [![Chromatography Direct Syringe Filters](https://blog.chromatographydirect.com/hubfs/Blog%20Images/syringe-filters-blog.jpg)](https://blog.chromatographydirect.com/syringe-filter-types-compared-which-membrane-should-you-choose) ## [Syringe Filter Types Compared: Which Membrane Should You Choose?](https://blog.chromatographydirect.com/syringe-filter-types-compared-which-membrane-should-you-choose) Not all syringe filters are created equal. The membrane you choose directly affects your results, yo... [Read more](https://blog.chromatographydirect.com/syringe-filter-types-compared-which-membrane-should-you-choose) [![Clean Screen DAU cartridges used in validated method](https://blog.chromatographydirect.com/hubfs/Canva%20images/600%20x%20308%20CD%20Blog%20UCT%20-%20DAU%20cartridges.png)](https://blog.chromatographydirect.com/prohibited-substances-in-racehorse-urine) ## [Prohibited Substances in Racehorse Urine: Validated SPE Method with Clean Screen® DAU](https://blog.chromatographydirect.com/prohibited-substances-in-racehorse-urine) The Application Horse racing is a multi-million pound industry with zero tolerance for doping. The I... [Read more](https://blog.chromatographydirect.com/prohibited-substances-in-racehorse-urine) [1](https://blog.chromatographydirect.com/author/chromatography-direct) [2](https://blog.chromatographydirect.com/author/chromatography-direct/page/2) [3](https://blog.chromatographydirect.com/author/chromatography-direct/page/3) [4](https://blog.chromatographydirect.com/author/chromatography-direct/page/4) [Next](https://blog.chromatographydirect.com/author/chromatography-direct/page/2) [Last](https://blog.chromatographydirect.com/author/chromatography-direct/page/4) ## Absolute Recovery Vials Part Number: VI-04-12-07AR Do you have limited sample volume? Sample down to a residual volume of 2µl\* with the NEW Absolute Recovery Vial from Chromatography Direct. Reduce volume robotic 9mm thread screw-top vials \*Depending on autosampler [Learn more](https://www.chromatographydirect.com/product/absolute-recovery-vials-clear-screw-top-9-425-thread-12mm-x-32mm-312) ![ARV](https://blog.chromatographydirect.com/hubfs/Vials%20and%20Caps/ARV.jpg "ARV") --- [![cd-logo-header](https://blog.chromatographydirect.com/hs-fs/hubfs/Logos/cd-logo-header.png?width=170&height=64&name=cd-logo-header.png "cd-logo-header")](https://www.chromatographydirect.com/) © Copyright Chromatography Direct Ltd 2026 [Privacy Policy](https://www.chromatographydirect.com/privacy-policy) [Cookie Policy](https://www.chromatographydirect.com/cookie-policy) [Terms of Use](https://www.chromatographydirect.com/terms-of-use) [Terms & Conditions](https://www.chromatographydirect.com/terms-and-conditions) [Trademarks](https://www.chromatographydirect.com/trademarks) **Chromatography Direct Ltd** 11 Regent Park, Booth Drive, Park Farm Industrial Estate, Wellingborough, Northants, NN8 6GR United Kingdom **T** [+44 (0) 1925 599070](tel:+441925599070) **F** [+44 (0) 1925 599071](tel:+441925599071) **E** [sales@chromatographydirect.com](mailto:sales@chromatographydirect.com) facebook-f icon linkedin-in icon twitter icon