Monitoring & Testing Downloads

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    Determination of Toxic Elements in Environmental Analyses

    Application Note: Ultrapure Water for Determination of Toxic Elements in Environmental Analyses. Abstract: In this paper the importance of reagent water quality for toxic element environmental analyses is discussed, and the suitability of fresh ultrapure water produced using Merck water purification systems for ICP-OES and ICP-MS trace element analyses in environmental laboratories is ...

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    Pesticide Standards For Food and Environmental Analysis

    Merck offers a portfolio of pesticides standards and Certified Reference Materials. Under the well-known brands Cerilliant®, Certipur®, PESTANAL®, VERTANAL™ and TraceCERT®, more than 1300 high purity pesticides and pesticide metabolites for food, environmental, and toxicology/forensic analyses are available. Products are available as neats and single and multicomponent certified solution ...

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    Analysis of Herbicides in Drinking Water

    Food & Beverage Analysis of Herbicides in Drinking Water Herbicides are used throughout the world to combat the growth of unwanted plant life. These polar compounds are hydrophilic, so they may find their way into drinking water sources. Because they show some level of toxicity to humans, quantitative and qualitative information can be used to determine whether a water source is safe ...

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    Air Monitoring: A Complete Line of Products for Air Monitoring

    A Complete Line of Products for Air Monitoring¦ Adsorbent Tubes Solvent Desorption Thermal Desorption¦ Passive Sampling¦ Whole Air Sampling¦ Pumps and Accessories¦ Chemical StandardsAir Monitoring2 sigma-aldrich.com/air_monitoring ordering: 800-247-6628 (US only) / 814-359-3441IntroductionSupelco is proud to offer this comprehensive catalog featuring our air monitoring product line with ...

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    Capabilities of the Adsorbent Tube Injector System (ATIS™)

    The Adsorbent Tube Injector System (ATIS) was developed at Supelco® by R&D Scientists, as a tool to assist in our comprehensive adsorbent research for thermal desorption tubes. The ATIS provides an efficient means of transferring calibration standards in either the gas or liquid phase onto the adsorbent packed tubes. The ATIS employs the technique of flash vaporization to vaporize the ...

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    Derivatization Reagents: For Selective Response and Detection in Complex Matrices

    Derivatization is a commonly used technique to augment chromatography analysis. It requires efficient and effective reagents that can modify the behavior of complex compounds and allow their detection in chromatographic analysis. Since the release of the last Derivatization guide in 2009, several innovative derivatization reagents have been introduced for various detection methods, and many other ...

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    Benefits of radiello ® Passive Sampling Devices

     Most commercially available passive/diffusive sampling devices are planar or axial in shape and offer lower sampling rates and limited sampling capacity. As a result, sensitivity can suffer during short-term analysis (due to low sampling rates), or long-term sampling (analyte back diffusion to low capacity). The radiello system uses a cylindrical outer surface that acts as diffusive ...

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    radiello™ Passive Sampler as a Tool for the Measurement of Atmospheric Ammonia Concentrations and Dry Deposition

    The National Atmospheric Deposition Program (NADP) launched the Ammonia Monitoring Network (AMoN) in 2010 but first piloted a passive sampling program beginning in 2007 with 16 test sites, experimenting with different types of passive sampling devices. Illinois Water Survey (IWS) operates as the Central Analytical Laboratory (CAL) for NADP’s AMoN and deploys and analyzes the ammonia test ...

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    Supel™ Tox OchraBind Data Sheet

    Supel™ Tox OchraBind cartridges provide cleanup of whole grain and feed samples for the detection of Ochratoxin A prior to use in HPLC, GC, and other analysis ...

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    Supel™ Tox DON Data Sheet

    Supel™ Tox DON cartridges provide rapid cleanup of wheat, flour, and corn for the detection of Deoxynivalenol (DON) to 100 ppb prior to use in HPLC, GC, and other analysis methods. Whereas affinity columns and other SPE cartridges utilize a 3-step bind and elute procedure, the Supel Tox product line employs a 1-step interference removal technique, saving sample processing time. The ...

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    SLB-5ms Capillary GC Columns

    Low levels of detection are a requirement for chromatographers in many different fields. Environmental chemists must meet stringent reporting requirements. Analysts in the pharmaceutical, food/ beverage, flavor/fragrance, and personal product industries must insure that harmful compounds are not present in consumer goods. Material scientists must fully characterize raw materials. Forensic ...

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    Molded Thermogreen LB-2 Septa

    Injection port septa used in gas chromatographic analyses should exhibit low bleed, resist leaks, and be easy to penetrate. For years, Thermogreen LB-2 septa have been considered by many as the benchmark GC septa for these parameters due to several performance advantages over other commercially available septa. A new generation septum, molded Thermogreen LB-2, continues the Supelco tradition of ...

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    Supel™ Tox FumoniBind Data Sheet

    Supel™ Tox FumoniBind cartridges provide rapid cleanup of whole grains and cereals for the detection of fumonisins (B1 and B2) prior to use in HPLC analysis ...

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    SupelMip Brochure

    MIP Technologies AB, Lund, Sweden, is a world leading company in the development of molecularly imprinted polymers (MIPs). The company is a pioneer in the commercial applications of MIPs, holds important patents, and maintains cutting-edge research activities in the area. The company’s mission is to provide innovative products based on molecularly imprinted polymers that serve ...

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    Solid Phase Extraction Products: Improve Sensitivity and Increase Throughput

    Solid phase extraction is a form of digital (step-wise) chromatography designed to extract, partition and/or adsorb one or more components from a liquid phase (sample) onto stationary phase (sorbent or resin). Over the last twenty years, SPE has become the most powerful technique available for rapid and selective sample preparation (prep) prior to analytical chromatography. SPE extends a ...

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    Improved Recoveries for GC/MS/MS Analysis of Pesticide Residues in Cannabis - Brochure

    One potential approach for the determination of pesticide residues in cannabis is the use of the “quick, easy, cheap, effective, rugged and safe” (QuEChERS) method outlined in AOAC official method 2007.01. In this application, QuEChERS was used in the extraction of pesticides from dried cannabis. For cleanup of the extracts, two different sorbent mixes were ...

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    Fast GC Analyses of Volatiles

    The primary aim of Fast GC is to maintain (compared to conventional GC) sufficient resolving power in a shorter time. Basically, Fast GC is accomplished by using a short column (reduces analysis time) with a narrow I.D. (offsets the loss of efficiency of the shorter column) while manipulating specific operating parameters, such as linear velocity and oven temperature ramp rates (1). The use of ...

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    Fast GC Brochure

    The primary aim of Fast GC is to maintain (compared to conventional GC) sufficient resolving power in a shorter time. Fast GC uses column and instrument improvements in combination with optimized run conditions to provide 3- to 10-times faster analysis times, while still providing acceptable resolution. Fast GC can be accomplished by manipulating a number of the analysis parameters, such as ...

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    Elix - High-Throughput Water Purification System - Brochure

    Laboratories around the world are evolving continually to keep pace with growing research requirements, new ways of sharing scientific information, the trend toward connectivity, and increasingly stringent environmental regulations. Adapting space and equipment to meet these new needs can be challenging for all ...

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    DSD-DNPH Passive Sampling Device: Product Flyer

    High Efficiency Diffusive Sampler for the Determination of Aldehydes and Ketones in Indoor and Ambient Air. Specified in OSHA Method 1007 for Determination of Aldehydes. Fast sampling rates due to radial design. High capacity – up to 7 days (not recommended for STEL). Stable blank data – important for LOQ. Easy extraction relative to badges and other passive samplers. Stable for wind, ...

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