Selecting the appropriate autosampler vials and related supplies is critical for reliable and accurate results in Gas Chromatography (GC) and High-Performance Liquid Chromatography (HPLC) applications. These instrument supplies are fundamental for sample containment, integrity, and introduction into analytical systems, impacting data quality significantly. Products were evaluated based on glass material quality, cap and septa design, compatibility with common autosamplers, and practical features like write-on spots, alongside user reviews and feature analysis.
Membrane Solutions 2mL Autosampler Vials, 2 mL HPLC & GC Chromatography Vials, Write-on Spot and Graduations, 9mm Blue ABS Screw Caps & Septa, 100 Pcs
$19.79
Offers Type 1, Class A Borosilicate glass, universal compatibility with major autosamplers, and includes caps and septa for a complete solution.
Search on AmazonAutosampler Vial, Clear Chromatography Lab Vial, HPLC LC GC 1.5 ml Wide Opening Short Screw-Thread Sample Vial with Write-on Spot, Clear, 12x32 mm, 8-425 Top Type, 100 pcs/pk by ALWSCI
$14.99
Provides Type 1, Class B Borosilicate glass vials with a wide opening for cost-effective sample containment, though caps are purchased separately.
Search on Amazon2 ML Autosampler Vial, Amber 8-425 HPLC, 8mm Chromatography Lab Vial with Writing Area, Black Screw Cap&Septa, 100 pcs
$25.99
Features amber Type I, Class A borosilicate glass, ideal for light-sensitive samples, with robust 8-425 screw caps and precision septa included.
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- MCX SPE Cartridges with high ion exchange capacity that can keep alkaline material effectively.Used for separation in the plastic industry and food industry and biology industry
- SPE Polypropylene Column extraction can be used for the selective adsorption of analytes or interferents from complex matrices, such as sample cleanup and analyte concentration prior to liquid chromatography (LC), gas chromatography (GC), ion...
- SPE Columns is a cost-effective alternative to liquid-liquid extraction. SPE offers increased throughput, reduced use of organic solvents and waste generation, higher and more reproducible recoveries, purer extracts, no emulsification, adjustable...
- Widely used for sample cleanup, trace enrichment, desalting, solvent exchange, and sample preservation and storage. Increased utilization reduces instrument uptime and minimizes organic solvents and waste
- Please select the appropriate Solid Phase Extraction Cartridges according to the analyte you are extracting and the sample
- Porosity: 120Å
- 4µm Particle Size
- Quick Seal Guard Cartridge
- SPE Polypropylene Column extraction can be used for the selective adsorption of analytes or interferents from complex matrices, such as sample cleanup and analyte concentration prior to liquid chromatography (LC), gas chromatography (GC), ion...
- HLB adsorbents provide excellent retention of a wide range of compounds including polar, intermediate polar and non-polar compounds
- SPE Columns is a cost-effective alternative to liquid-liquid extraction. SPE offers increased throughput, reduced use of organic solvents and waste generation, higher and more reproducible recoveries, purer extracts, no emulsification, adjustable...
- Widely used for sample cleanup, trace enrichment, desalting, solvent exchange, and sample preservation and storage. Increased utilization reduces instrument uptime and minimizes organic solvents and waste
- Please select the appropriate Solid Phase Extraction Cartridges according to the analyte you are extracting and sample
- MS NOVENT II RESTR PK2 VAR SAT 2000 SER
- For laboratory use only
- SGE products are not suitable for medical use
- Size: 22.5*75 mm, the vial mouth outer diameter is 20 mm,20 mm crimp seal finish are designed to fit most headspace autosamplers
- Material: Manufactured from clear Type I borosilicate glass, of which can withstand high internal pressure, the vials have a wall thickness of 1.1 mm
- Beveled Finish Vial : Reduced the amount of sealing surface between the crimp seal and the glass surface,Also A bevelled top Headspace Neck might be required for some special closure systems (PerkinElmer)
- Flat Bottom Vial: when vials have to run within the instrument on a slightly downwards tendency and preferred for manual headspace autosamplers,Flat bottom maximizes heating efficiency
- Quantity: 100 pcs/pk
- Precision Chromatography Tool: Designed for thin-layer chromatography (TLC) in laboratories, enabling accurate separation and analysis of compounds for detailed study and quality assurance
- Premium Borosilicate Glass: Highly durable, thermally resistant, and chemically inert, ensuring reliable performance and extended lifespan in demanding lab environments
- Solvent-Saving: Features an optimized narrow base to reduce solvent usage for routine lab workflows
- Compatibility: Accommodates multiple TLC plates up to 2.5 x 7.5 cm, with a secure sealing lid to prevent solvent evaporation and ensure consistent results
- Warranty: 1-year coverage period for your peace of mind, if received damaged, please let us know and we will solve it promptly
- SGE - 30M X 0.32MM ID BPX-BIOD WAX, 1.0UM
- For laboratory use only
- SGE products are not suitable for medical use
- SPE Polypropylene Column extraction can be used for the selective adsorption of analytes or interferents from complex matrices, such as sample cleanup and analyte concentration prior to liquid chromatography (LC), gas chromatography (GC), ion...
- C18 SPE Columns Extremely retentive for nonpolar compounds.Effective for desalting aqueous mixtures
- SPE Columns is a cost-effective alternative to liquid-liquid extraction. SPE offers increased throughput, reduced use of organic solvents and waste generation, higher and more reproducible recoveries, purer extracts, no emulsification, adjustable...
- Widely used for sample cleanup, trace enrichment, desalting, solvent exchange, and sample preservation and storage. Increased utilization reduces instrument uptime and minimizes organic solvents and waste
- Please select the appropriate Solid Phase Extraction Cartridges according to the analyte you are extracting and the contaminants/interferences in the sample
- 9mm Diameter ThermoRed High Temp Ultra Low Bleed GC Septa, 3mm Thick, Long Life - 450 Injections, Max Temp 400°C
- 11mm (7/16") Diameter HT-X High Temp Low Bleed Blue Silicone GC Septa, Long Life - 200 Injections, Max Temp 350°C
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How to Choose the Best Lab Chromatography GC Instrument Supplies
Understanding Vial Material and Clarity
The material of chromatography vials directly impacts sample integrity and analytical performance. Borosilicate glass is the industry standard due to its chemical inertness and low expansion coefficient. Users often encounter designations like 'Type 1, Class A' or 'Type 1, Class B'. Type 1, Class A borosilicate glass, as seen in the Membrane Solutions and PEKYBIO Amber vials, offers superior chemical resistance and thermal stability, making it suitable for demanding applications and sensitive analyses. Class B, while still borosilicate, may have slightly less stringent specifications. The choice between clear and amber vials is also crucial; amber glass, utilized by ALWSCI Amber and PEKYBIO Amber, is essential for protecting light-sensitive compounds from degradation, a common requirement in pharmaceutical or environmental analysis.
Cap and Septa Compatibility and Sealing
The integrity of the seal is paramount to prevent sample evaporation and contamination. Autosampler vials typically feature specific screw thread designs, such as 9-425 or 8-425. Membrane Solutions offers 9-425 screw thread vials, which are often associated with a wider opening and easier sample loading. In contrast, ALWSCI and PEKYBIO vials primarily use the 8-425 thread. It's vital to match the cap thread size with the vial to ensure a consistent, evaporation-proof seal. Additionally, some products, like those from ALWSCI, are supplied without caps, necessitating separate procurement, which can be beneficial for labs with specific septa requirements or existing cap inventory. Conversely, Membrane Solutions and PEKYBIO typically provide vials complete with pre-assembled caps and septa, streamlining preparation.
Vial Dimensions and Autosampler Compatibility
Standardization in vial dimensions ensures compatibility across various autosampler platforms. The most common size for 2mL vials is 12mm diameter by 32mm height, which is consistently observed across products from Membrane Solutions, ALWSCI, and PEKYBIO. This universal sizing allows for broad compatibility with major autosampler brands like Agilent, Shimadzu, and Waters. Laboratories should verify that the specific vial dimensions and cap type (e.g., 9mm blue ABS screw caps from Membrane Solutions) align with their instrument's tray and injector specifications. While most 2mL vials conform to this standard, variations in opening size (e.g., 'wide opening' as described for ALWSCI) can affect pipetting ease and needle access, which is a practical consideration for high-throughput labs.
Practical Features: Write-on Spots and Graduations
Efficient sample management in a busy lab environment often relies on clear labeling and precise volume measurement. Many autosampler vials, including those from Membrane Solutions, ALWSCI, and PEKYBIO, feature a dedicated write-on spot. This frosted area allows for easy labeling with a marker, crucial for sample identification and tracking, preventing mix-ups. Graduations, also present on some Membrane Solutions vials, provide approximate volume indicators, which can be useful for quick visual checks during sample preparation or to ensure sufficient sample remains. While not strictly necessary for analysis, these features significantly improve workflow efficiency and reduce the potential for errors in sample handling.
Pros & Cons
Membrane Solutions 2mL Autosampler Vials, 2 mL HPLC & GC Chromatography Vials, Write-on Spot and Graduations, 9mm Blue ABS Screw Caps & Septa, 100 Pcs
Pros
- Constructed from high-quality Type 1, Class A Borosilicate Glass, offering excellent chemical inertness.
- Features a 9mm screw thread design, often preferred for its wider opening and ease of filling.
- Includes blue ABS screw caps and septa, providing a complete and ready-to-use solution.
- Equipped with a write-on spot and graduations for convenient sample labeling and volume estimation.
- Standard universal dimensions ensure compatibility with a broad range of autosampler instruments.
Cons
- The 9mm cap size may not be compatible with all older or specialized autosamplers that require 8mm threads.
- Clear glass may not be suitable for light-sensitive compounds, potentially requiring additional protective measures.
Autosampler Vial, Clear Chromatography Lab Vial, HPLC LC GC 1.5 ml Wide Opening Short Screw-Thread Sample Vial with Write-on Spot, Clear, 12x32 mm, 8-425 Top Type, 100 pcs/pk by ALWSCI
Pros
- Made from Type 1, Class B Borosilicate Glass, providing good chemical resistance for general applications.
- Features a wide opening, which can facilitate easier sample loading and pipetting.
- The 8-425 screw thread design ensures a consistent seal when paired with appropriate caps.
- Includes a write-on spot for convenient sample identification and tracking.
- Standard 12x32 mm dimensions ensure compatibility with many autosampler models.
Cons
- Vials are supplied without caps and septa, requiring separate purchase and potentially increasing overall cost and complexity.
- Class B borosilicate glass may not be ideal for the most sensitive or reactive samples compared to Class A.
2 ML Autosampler Vial, Amber 8-425 HPLC, 8mm Chromatography Lab Vial with Writing Area, Black Screw Cap&Septa, 100 pcs
Pros
- Utilizes amber Type I, Class A borosilicate glass, providing superior protection for light-sensitive analytes.
- Comes with black polypropylene screw caps and precision-fit septa, ensuring an evaporation-proof seal.
- Features an 8-425 screw thread, a common standard for many HPLC and GC autosamplers.
- Includes a writing area on the vial for clear and easy sample identification.
- Conforms to USP Type I and ASTM E439, Type I, Class A requirements, indicating high quality.
Cons
- Amber glass can obscure visual inspection of sample clarity or particulate matter compared to clear vials.
- The 8-425 thread type might not be universally compatible with all autosampler models that specify 9mm thread vials.
Common Mistakes to Avoid
Mismatched Cap and Vial Thread Types
A frequent error observed in laboratories is attempting to use caps with incompatible vial thread types. For instance, trying to fit a 9-425 screw cap onto an 8-425 thread vial, like those from PEKYBIO or ALWSCI, will result in a poor seal or an inability to screw the cap on properly. This leads to sample evaporation, contamination, and inaccurate analytical results. Conversely, a 9-425 vial, such as those from Membrane Solutions, requires a cap specifically designed for that thread to ensure an airtight seal.
Overlooking the Inclusion of Caps and Septa
Some autosampler vials, notably the ALWSCI products, are explicitly sold 'without caps'. A common mistake is assuming that all vials come as a complete set. Failure to procure the necessary caps and septa separately can halt experiments or lead to improvisation with unsuitable sealing materials, compromising sample integrity and instrument performance. Always verify if the chosen vial includes the cap and septa or if they need to be ordered as distinct components.
Incorrect Glass Type for Sample Sensitivity
Using clear borosilicate glass vials for light-sensitive samples is a pervasive error. While clear vials, like the Membrane Solutions or PEKYBIO Clear options, are suitable for many applications, they offer no protection against photodegradation. For analytes susceptible to light, selecting amber vials, such as the PEKYBIO Amber or ALWSCI Amber, is critical. Failing to do so can result in sample degradation before analysis, leading to erroneous or irreproducible data.
Ignoring Autosampler Instrument Specifications
Laboratories sometimes purchase vials based on general chromatography needs without cross-referencing their specific autosampler instrument requirements. While most 2mL vials are 12x32mm, variations in thread type (e.g., 8-425 vs. 9-425) or cap material can lead to issues with instrument compatibility, proper seating in the tray, or needle penetration. Always consult the autosampler's manual to confirm the exact vial and cap specifications, including any recommendations for septa material, to prevent operational failures.