Environmental Products & Reviews

Environmental monitoring and testing assess the quality of our air, water, soil, and overall ecosystems. Using advanced technologies and analytical methods, environmental scientists collect and analyze samples to measure levels of pollutants, contaminants, and other factors impacting environmental health. By monitoring changes over time and identifying potential risks to human health, this field plays a vital role in informing policy decisions and implementing effective mitigation strategies. Explore how environmental monitoring and testing contribute to safeguarding our planet's well-being and promoting sustainable development.

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Derivatization Reagents for Acylation

Sigma-Aldrich Supelco

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…

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Derivatization Reagents for Alkylation & Esterification

Sigma-Aldrich Supelco

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…

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Supel™Connect High Performance Fittings

Sigma-Aldrich Supelco

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…

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Custom Made Packed GC Columns

Sigma-Aldrich Supelco

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…

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High Capacity Gas Purifier

Sigma-Aldrich Supelco

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.

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Supelcarb HC Hydrocarbon Trap

Sigma-Aldrich Supelco

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.

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Supelco® Helium Purifier for GC/MS

Sigma-Aldrich Supelco

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…

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HPLC and FPLC Columns for the Analysis and Purification of Biopolymers

Sigma-Aldrich Supelco

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…

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Chiral Capillary GC Columns

Sigma-Aldrich Supelco

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…

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Solvent Desorption Tubes & Cartridges

Sigma-Aldrich Supelco

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…

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