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Accurate and reliable sample introduction is crucial for successful chromatography. The right supplies ensure consistent results, minimize contamination, and prolong the lifespan of your valuable instrumentation. Investing in quality components directly impacts the integrity of your analytical data.
✅LOW EXPANSION COEFFICIENT - 9mm Screw Thread Autosampler Vials are made of clear Type 1, Class A Borosilicate Glass with very low expansion coefficient. It shows excellent chemical resistance to acidic and neutral solutions, due to its relatively low...
✅9-425 SCREW VIALS - 2ml sample Vials with unique thread design ensures consistent seal and can be reused, not volatile, easy to use, Amber vial with large writing patch for sample identification.
✅PTFE/SILICONE SEPTA - 2ml Amber GC sample vials included blue ABS Screw Cap & Septa (Red PTFE/White Silicone Liner) This PTFE/Silicone septa with PTFE chemically inert before being penetrated and strongest repetitive sealing ability-recommended for...
Smooth Plunger & Leak-Resistant Seal: The precision-crafted inner barrel allows the plunger to glide smoothly without sticking or jamming, while the secure seal helps minimize leaks for accurate and controlled liquid dispensing
Clear U-100 Scale: Features bold, easy-to-read U-100 markings for precise liquid measurement, helping improve accuracy and consistency during use.
Durable & Reliable Construction: Made from high-quality, sturdy plastic that is non-toxic, odor-free, with a durable construction, and designed for dependable performance in laboratory, industrial, gardening, and household applications.
Individually Wrapped for Clean Storage: Each syringe is individually sealed to help maintain cleanliness and keep supplies protected, more convenient and organized.
INDIVIDUALLY WRAPPED: Each unit is individually wrapped to keep supplies organized and easy to store in drawers, cabinets, toolboxes, or workstations
CLEAR SCALE MARKINGS: Bold U-100 graduations are easy to read at a glance, helping support clear and convenient liquid measuring
SMOOTH MOVEMENT & SECURE SEAL: The smooth inner surface supports steady plunger movement, while the secure seal helps maintain consistent liquid handling
RELIABLE DESIGN: Designed with secure seals and carefully assembled components to support consistent liquid handling and organized storage
Product Contains: 1ml/cc syringes 30G 1/2 Inch (13mm), Pack of 100.
Aseptic Packaging: Every syringe is individually packaged in a safe and sterile manner to ensure reliability during use. Store in a dry, clean place and dispose of properly after use.
Clear Grade Design: The clearly printed scale, a smooth and stable piston for easy one-handed operation, ensuring precise dosing.
Leak-Proof Construction: The syringes are designed with a stable and durable leak-proof structure for safe sealing.
Smooth Plunger & Secure Seal: The smooth-moving plunger supports controlled liquid dispensing, while the secure seal helps maintain consistent flow and reliable performance during use
Individually Wrapped: Each syringe comes individually packaged for easy organization, storage, and transport. Simply grab what you need without opening the entire box, while keeping remaining units neatly stored until use
Easy-to-Read U-100 Scale: Featuring bold U-100 graduations, these syringes support clear and consistent liquid measuring. Visible markings make it easier to view measurements at a glance
Reliable Design: Designed with quality materials and carefully assembled components to support consistent handling and dependable everyday performance
Last update on 2026-10-17 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Lab Chromatography Sample Introduction Supplies
Understanding Your Chromatography Needs
The selection of sample introduction supplies hinges on the specific chromatography technique you are employing (e.g., GC, HPLC) and the nature of your samples. Consider the sample matrix, concentration range, and potential for interfering compounds. For instance, volatile samples might require different septa or vials than non-volatile ones. Compatibility with your instrument's injection port, autosampler, and detector is paramount.
Key Components to Consider
Vials and Caps: Choose vials made from inert materials like Type 1 borosilicate glass to prevent sample adsorption. Autosampler vials often have specific dimensions and crimp tops for automated systems. Caps should provide a secure seal, with septa made from materials resistant to solvent penetration and needle coring.
Syringes: For manual injections or specific autosampler applications, select syringes with appropriate volumes, needle gauges, and tip styles. Glass syringes are common for high precision, while specialized materials may be needed for corrosive samples.
Septa: These are critical for sealing injection ports and vials. Material choice (e.g., PTFE, silicone) affects temperature limits, chemical resistance, and resealing capabilities.
Ferrules and Tubing: Used for connecting components, these should be made of inert materials like PEEK or stainless steel, chosen based on temperature and pressure requirements.
Material and Compatibility
Always verify that all components are compatible with the solvents, mobile phases, and sample analytes you will be using. Incompatibility can lead to leaching, sample degradation, or instrument damage. Consult your instrument manufacturer's recommendations and supplier datasheets for detailed material specifications and operating limits.
Frequently Asked Questions
What is the difference between a vial and a cap?
A vial is the container that holds your sample. The cap seals the vial, and often contains a septum that can be pierced by a needle for sample withdrawal or introduction.
How do I choose the right septum material?
Septum material selection depends on the solvents used and the required temperature range. PTFE and silicone blends are common, offering good chemical resistance and resealing properties for many applications.
Are all glass vials the same?
No, glass vials vary by type (e.g., Type 1 borosilicate is preferred for analytical work due to low reactivity) and features like neck finish, volume, and whether they are designed for autosamplers.
What does 'needle coring' refer to?
Needle coring occurs when a syringe needle repeatedly pierces a septum and cuts out small pieces of the septum material. This can contaminate your sample and clog instrument components.
How often should I replace my chromatography supplies?
Replacement frequency depends on usage, sample type, and instrument conditions. Regularly inspect vials, septa, and syringes for signs of wear or contamination, replacing them as needed to ensure data integrity.
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