Products & Reviews

The Perfect Combination of Low Bleed, Thermal Stability, and Easy Puncturability!Molded Thermogreen LB-2 septa are manufactured from high quality, low bleed material using the same exclusive LB-2 rubber formulation that chromatographers are accustomed to using. The difference is that molded septa, unlike traditional die-cut septa, offer easier installation and better sealing inside the injection port. This is because our liqui…

Supelco provides high quality derivatization reagents for silylation.Silylation is the most widely used derivatization technique. Functional groups that present a problem with gas chromatogaphy detection - hydroxyl, carboxylic acid, amine, thiol, phosphate - can be derivatized by silylation reagents. Silylation involves replacement of the acidic hydrogen with an alkylsilyl group, for example, -SiMe3.Silylation derivatives are…

Supelco provides high quality derivatization reagents for acylation.Acylation, an alternative to silylation, allows the conversion of compounds with active hydrogen such as -OH, -SH, and -NH into esters, thioesters and amines, respectively. A very popular example of this method is the insertion of perfluoracyl groups to enable electron capture detection (ECD). Carbonyl groups adjacent to halogenated carbons enhance the ECD res…

Supelco provides high quality derivatization reagents for akylation and esterification.Alkylation is the replacement of the active hydrogen in R-COOH, R-OH, R-SH, R-NH, R-NH2, R-CONH2, R-CONH-R′ with an alkyl group, or sometimes an aryl group.Esterification is the first choice for derivatization of carboxylic acids and other acidic functional groups. Acids are reactive compounds, and are too polar to be well separated by gas c…

Supelco® has developed a line of high performance fittings that maintain the integrity of your HPLC systems up to 15,000 psi with mere finger tightening!The use of HPLC systems to achieve faster analyses and increased resolution pushes systems toward higher operating pressures. Our selection of Supel™-Connect High Performance Interconnects and Fittings will assist the chromatographer in maximizing system performance and reliab…

Supelco’s complete line of stock and custom packed GC columns are configured to fit most commercially available GC instruments.Supelco® has been the leader in packed GC column technology for over 40 years. Should you not be able to locate a stock item to fit your needs, our custom capabilities allow us to manufacture columns and packings to your specifications. In addition we also carry hard-to-find tools specifically designed…

High Capacity Gas Purifiers (Remove Moisture and Oxygen)The best purifier choice for removing moisture and oxygen from carrier gas streams is our High Capacity Gas Purifier. It consists of three parts:• Clam-shell oven• Replaceable heating elements• Replaceable converter tube.A convenient starter kit contains all three items for new installations.

Supelcarb® is Back by Popular Demand!Supelco® is pleased to welcome the Supelcarb HC Hydrocarbon trap back to our line of in-line gas purifiers! Supelcarb adsorbent has the greatest trapping ability of hydrocarbons per gram of adsorbent (twice that of activated charcoal). These traps are the best traps available for removing hydrocarbons and other organics from carrier, fuel, air and other gas streams.

Specialty In-Line Purifier for GC-MS HeliumThe most sensitive GC-MS instruments require a steady stream of ultra-high purity (99.99999%) helium for optimal performance. To achieve this level, a specialty purifier is required. These purifiers contain multiple adsorbent beds for the removal of all critical contaminants. Additionally, the adsorbent materials are packed into the cartridge under helium to ensure no other gas off-g…

Purification Consumables and Custom Products.We understand that your purification challenges are unique. That’s why we offer you a variety of options to help you solve them. Whether you seek the up-front cost savings and versatility of packing your own columns, the consistent quality and time savings of pre-packed columns, or the ease associated with having us purify material for you; Sigma-Aldrich is your purification partner…

HPLC and FPLC Columns for the Analysis and Purification of Biopolymers.Biopolymers, including peptides, proteins, polynucleotides, and other biodegradable polymers, display a variety of ionic charges and differ in terms of hydrophobicity, size, shape and mass. In addition to these structural (and functional) complexities, an individual biopolymer is typically present at low concentration in samples that contain many similar co…

Cyclodextrin-based DEX and Astec CHIRALDEX phases are stable, high boiling liquids and make effective CSPs for enantiomer separations by GC. The two lines exhibit complementary selectivity.Cyclodextrins are macromolecules composed of 6 or more D(+)-glucose residues bonded through α-glycosidic linkages. They are classified according to the number of glucose residues they contain: α-cyclodextrins (six residues), β-cyclodextrins…

Active Sampling Tubes for Air Monitoring.ORBO sorbent tubes contain two beds of the same selective adsorbent seperated by glass wool or foam, for gas and vapor sampling. The dual-layer or two-bed construction of the tube allows for any sample breakthough to be captured in the smaller back-up bed. Our sorbent tubes contain Supelco′s high quality adsorbents that professionals world-wide trust for their applications. We offer the…

Supelco′s new Low Adsorption (LA) vials are manufactured using a process that decreases the number of hydroxyl groups on the vial′s glass surface, significantly reducing surface activity while improving analytical quantitation and minimizing pH shifts in the sample.This same process also removes unwanted surface metals such as sodium and boron that can contaminate samples and interfere with trace analysis. Unlike other methods…

Our new certified vial, cap and septa products eliminate "fit" and septa contamination concerns associated with other brands.By taking these extra manufacturing and testing steps, we can ensure:• Caps thread properly onto vials, providing an air-tight seal• Syringe needles are not damaged by irregular vial bottom thickness• Minimal contamination from septa impurities.Quality is built into each component of the Supelco certifie…

Cogent Diamond Hydride HPLC Columns are manufactured with TYPE-C™ silica (silica hydride) and a very small amount of carbon on the surface that adjusts the column hydrophobicity to an important level. This makes these columns have unique separation capabilities for scientists working in LCMS, metabolomics, bioanalytical, amino acids, organic acids, carbohydrates, and very polar small molecules.

Seal and individualize 96- and 384-format 2D-barcoded storage tubes in a single process using the Thermo Scientific™ SampleSeal™ Heat Sealer. The foil-sealed tubes can be reliably stored at temperatures from -196° to +25°C, and easily pierced with manual or automated pipette tips, supporting compatibility across standalone or integrated storage applications. The SampleSeal creates single access samples which eliminate thaw an…

Our Flipper® racks present colorful solutions and space saving utility for tubes ranging in size from 0.2mL all the way up to 50mL. Available in different configurations to meet laboratory needs.

Precision Blue™ Real-Time PCR Dye, 55 µl (500 x 20 µl reactions)

A fully functional desktop-based proteomics workbench, PEAKS Studio offers a complete proteomics software. Users are able to perform de novo sequencing, protein identification (PEAKS DB), multi-engine protein identification (PEAKS inChorus), PEAKS PTM, Sequence Homology Searching (SPIDER) and Quantification (as an optional node).Tools: Load and Process (RAW) Instrument Data De Novo Sequencing Protein Database Search E…

CyPlex™ is fundamentally altering the landscape of multiplexed immunoassays by ushering in a new platform technology that provides multiplexed test results without multiplexing assays. CyPlex™ is the only multi-analyte immunoassay technology that offers the specificity of a traditional single analyte immunoassay (e.g. ELISA). CyPlex™ assays can thus be considered as miniaturized, fully automated ELISAs. In addition to offerin…

ProVance™ columns are a high-performance disposable chromatography solution to help meet the growing demand for downstream purification. Until now, there has not been a cost-effective Protein A chromatography option for single-use manufacturing facilities. ProVance™ columns combine Grace proprietary incompressible silica with cost-effective Protein A and disposable column hardware.Grace is the world's largest supplier of spec…

The PacBio RS II is a Single Molecule, Real-Time (SMRT®) DNA Sequencing System that provides the highest consensus accuracy and longest read lengths of any available sequencing technology. SMRT Sequencing is ideal for de novo assembly, characterization of genetic variation, methylation analysis, microbiology studies, and more.The instrument features high performance optics, automated liquid handling, and an environmental cont…

Crystal clear virgin PS, sterile and certified non pyrogenic. VWR Collection flasks are vacuum gas plasma treated for consistent cell attachment and growth. Vented caps incorporate a 0,22 µm hydrophobic filter to allow gas exchange and minimise risk of contamination. Plug seal caps can be used in closed systems (providing a liquid and gas-tight seal) or used in an open system (simply unscrew the cap one quarter of a turn).Fea…

Mannitol Salt Agar is used for the isolation of staphylococci. Conforms to Harmonized USP/EP/JP Requirements. Chapman formulated Mannitol Salt Agar to isolate staphylococci by inhibiting growth of most other bacteria with a high salt concentration. Chapman added 7.5% Sodium Chloride to Phenol Red Mannitol Agar, and noted pathogenic strains of staphylococci (coagulase-positive staphylococci) grew luxuriantly and produced yello…