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en1822-4 Applications

  • [Lys5,MeLeu9,Nle10]-NKA(4-10)

    Creative Peptides is specialized in the process development and the manufacturing of bioactive peptides. More information please visit our website: https://www.creative-peptides.com/product/lys5-meleu9-nle10-nka-item-r0867-34669.html

    By Creative Peptides based in Shirley, NEW YORK (USA).

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    Determination of 4-carboxybenzaldehyde & p-toluic acid in purified terephthalic acid according to ASTM D7881 & ASTM D7882 test methods

    Introduction

    These test methods cover the determination of 4-carboxybenzaldehyde (4-CBA, 4-formylbenzoic acid) and p-toluic acid (p-TOL, 4-methylbenzoic acid) in purified terephthalic acid (PTA) by capillary electrophoresis (CE) with normal or reverse voltage mode and UV detection.

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

  • Monitoring Well Inspection With 3/4-inch Video Camera

    Allegheny Instrument's Nano downhole camera is used to visually inspect groundwater monitoring wells from 1-inch diameter and larger to depths of 1,000 feet with the Heavy Duty hand reel system and depths of 2,000 feet with the Deluxe motorized winch.

    By Allegheny Instruments, Inc. based in Monterey, VIRGINIA (USA).

  • {[(1R,2R)-2-Amino-1,2-diphenylethyl](4-toluenesulfonyl)amido}(p-cymene)ruthenium(II)tetrafluoroborate

    Alfa Chemistry offers an extensive catalog of building blocks, reagents, catalysts, reference materials, and research chemicals in a wide range of applications. We supply {[(1R,2R)-2-Amino-1,2-diphenylethyl](4-toluenesulfonyl)amido}(p-cymene)ruthenium(II)

    By Alfa Chemistry based in Holtsville, NEW YORK (USA).

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    Parallel evaporation for the pharmaceutical industry

    For quality control in pharmaceutical industry and in the development of new components 

    By BÜCHI Labortechnik AG based in Postfach, SWITZERLAND.

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    A New GC-MS Method for Mycotoxin Analysis Using 13C-marked Mycotoxin Derivatives

    Andreas Breidbach [1] and Wolfgang Brodacz [2,3,4] developed a new GC-MS method using fully 13C isotopelabelled analogues of T-2 toxin and HT-2 toxin that allows for the detection of these toxins at concentrations as low as 2–5 ppb.

    By Merck KGaA, Darmstadt, Germany based in Darmstadt, GERMANY.

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    Industrial Weighing - Data Communications

    The accuracy of METTLER TOLEDO’s measurements is supported by a wide variety of communication standards as simple as USB, RS232/485 or 4-20ma or more complex Industrial communication busses such as Profibus, Ethernet/IP, DeviceNet and ControlNet. Ethernet binds many of our data/operator intensive counting, formulation and inventory control workstations to your network.

    By Mettler - Toledo Int. Inc based in Greifensee, SWITZERLAND.

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    Analysis of VOC compounds in water by Purge & Trap or dynamic headspace

    Context & Challenges Volatile organic compounds (VOC) can be dissolved in water. Sometimes water is polluted and to study contamination of VOC in finished drinking water, VOC must be measured. Chromatotec® Solutions Chromatotec® has developed a specific system for the measurement of VOC in water: a Purge & Trap system, the airmoPURGE. The analyzer is coupled with a degasing system allowing the extraction of dissolved gases. The complete system is based on: - 502.2 method from US EPA – “Volatile organic compounds in water by purge and trap capillary column gas chromatography with photoionization and electrolytic conductivity detectors in series – Revision 2.1”. - 524.2 method from US EPA – “Measurement of purgeable organic compounds in water by capillary column gas chromatography/mass spectrometry – Revision 4.0”.

    By Chromatotec Group based in Val de Virvée, FRANCE.

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    Analysis of Methylimidazoles in Caramel Colored Carbonated Beverages

    Caramel colorings are used as additives in a broad range of food and beverage products to impart a desired color, but have no nutritional or preservative function. Recently, the potential hazard to humans of ammonia- and ammonia-sulfite-process caramel colorings was raised, because they contain the by-product 4-methylimidazole, which is a potential carcinogen.1 The methylimidazole compounds are difficult to analyze due to their polar nature and low molecular weight. Traditional reversed phase techniques are unsuccessful in retaining these small polar compounds. Therefore, most HPLC methods utilize ion-exchange resins for analysis. Another common method involves GC analysis after the analytes first undergo a derivatization step. The purpose of the work shown in this article was to develop a simple and fast analytical method to determine the levels of 2-methylimidazole and 4-methylimidazole in caramel colored carbonated beverages.

    By Merck KGaA, Darmstadt, Germany based in Darmstadt, GERMANY.

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    Reduced Fat Interference with Analysis of Pesticides in Avocados

    QuEChERS (Quick, Easy, Cheap, Effective, Rugged, Safe) is a very popular method for the extraction and cleanup of fruit and vegetable samples for pesticide residue analysis.2-4 The extraction step uses acetonitrile and a salting out effect (with MgSO4). Cleanup is then accomplished using dispersive SPE (dSPE) followed by a centrifuge step prior to analysis. This application shows the clean-up and analysis using Supel™ QuE Z-Sep+ QuEChERS and an SLB®-5ms GC column.

    By Merck KGaA, Darmstadt, Germany based in Darmstadt, GERMANY.

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    Low level measurement of VOCs and Terpenes close to the sea and the Landes Forest

    It has been established that organic aerosol (OA) makes up for a major fraction of fine particulate matter in all region of the atmosphere. This fraction accounts approximately for half of the total PM2.5 dry mass.1,2 Primary OA is directly emitted in the troposphere from anthropological and natural sources whereas secondary OA (SOA) is formed in-situ in the atmosphere from the oxidation of biogenic or anthropogenic gas-phase precursors and subsequent partitioning of the less volatile products into the particle phase. The current number is that, on a global scale, SOA would represent around 60% of the overall OA.3 However, recent global mass-balance estimations for the removal of volatile organic compounds (VOC) suggest that this number could under-predicts SOA production.4 Recent field measurements in urban locations are also in support of a larger share, indicating that SOA is the dominant fraction of OA, with amounts considerably 20 greater than models predictions.

    By Chromatotec Group based in Val de Virvée, FRANCE.

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    Formaldehyde and Acetaldehyde Determination in Air Using Fully Automated On-Line Desorption and Analysis of DNPH Cartridges

    Airborne aldehydes and ketones are collected by passing air through a cartridge containing 2,4-dinitrophenylhydrazine (DNPH). Carbonyl compounds react with the DNPH to form hydrazones, which are immobilized on the cartridge. These compounds can be easily eluted from the cartridge with acetonitrile and analyzed by HPLC with UV detection. Traditionally, this analysis including the workup contains a series of manual steps, which can become time-consuming and could incur experimental error. Automating the extraction of LpDNPH S10 cartridges and putting it in-line with the HPLC analysis will significantly reduce manual labor using this technique and this will improve reproducibility of the method by reducing potential experimental errors by the operator. The automation and unattended operation of the method leads to high throughput for determining airborne formaldehyde and acetaldehyde.

    By Merck KGaA, Darmstadt, Germany based in Darmstadt, GERMANY.

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    ADVANCEES - Application: Iron Reduction

    Iron and manganese are problematic in water due to their tendency to oxidize and precipitate, causing both aesthetic and process water problems. Learn how can we help you to solve this issue. www.advancees.com/applications/

    By Advanced Equipment and Services based in Hollywood, FLORIDA (USA).

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    Determination of methionine hydroxy analogue in fodder additives

    Introduction

    The method is used for the determination of the mass fraction of methionine hydroxy analogue (DL-2-hydroxy-4-(methylthio) butyric acid (HMTBa) and its calcium salt) in fodder additives by capillary electrophoresis.

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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    Determination of phenoxycarboxylic acid herbicides in water

    Introduction

    The method allows determination of herbicides classified as phenoxycarboxylic acids, specifically: 2,4-dichloro-- phenoxybutyric acid (2,4-DB), 2,4-dichlorophenoxypropioni c acid (2,4-DP, Dichlorprop), 2,4-dichloropheno-- xyacetic acid (2,4-D), and phenoxyacetic acid in samples of natural, potable and treated waste water by capillary electrophoresis.

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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    Ultra low pressure drop MFC flow solutions

    Precision mass flow control with industry leading pressure drop of 4.5 psid (310 mBard) up to flows of 500 slpm (nlpm); Accuracy +/- 1.0% of full scale; 316 stainless steel construction; CE Approved

    By Sierra Instruments, Inc. based in Monterey, CALIFORNIA (USA).

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    Magnets for the laboratory equipment industry

    Laboratory and pilot versions of mineral separators give results in laboratory conditions, which can be directly related to full scale production machines.

    By Master Magnets Ltd based in Redditch, UNITED KINGDOM.

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    Determination of phenoxycarboxylic acid herbicides in water using high performance capillary electrophoresys method using Capel systems

    The method allows determination of herbicides classified as phenoxycarboxylic acids, specifically: 2,4-dichloro-- phenoxybutyric acid (2,4-DB), 2,4-dichlorophenoxypropionic acid (2,4-DP, Dichlorprop), 2,4-dichloropheno-- xyacetic acid (2,4-D), and phenoxyacetic acid in samples of natural, potable and treated waste water by capillary electrophoresis. 

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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    Water treatment solutions for oil and gas industry

    "Made in Germany" for the global oil and gas industry. ProMinent`s tailored products are made in Germany. Designed as complete solutions and manufactured in-house, they are quickly ready for use (up-, mid- and downstream).

    By ProMinent Group - ProMinent GmbH based in Heidelberg, GERMANY.

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    Low flow control (down to 0.1 sccm) flow solutions

    Low flow measurement and control is a difficult application. Ultra low flow mass flow controllers can accurately control flows from 0.1 to 0.4 sccm which is ideal for measuring and controlling doping gases for pilot plants and other research houses.

    By Sierra Instruments, Inc. based in Monterey, CALIFORNIA (USA).

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