Chromatography Columns Articles

  • Merck KGaA, Darmstadt, Germany News on Water 2018, Volume 1

    This volume of News on Water highlights: New ISO Standard 17943 for Determination of VOCs in Water by HS-SPME and GC-MS Extraction of Organic Compounds from Water, Using ENVITM-18 DSK Solid Phase Extraction Disks Watercol columns Certified Reference Materials ready-to-use for water and waste water analysis ...

  • Pyrolysis-GC/MS Real and Faux Leather

    Application Note Textiles Abstract Pyrolysis reveals components and differences between different leather and faux leather products. Introduction Pyrolysis-GC/MS allows for the analysis of organic materials which are too large to be compatible with GC alone. Material is heated in a controlled way, facilitating breakdown into ...


    By CDS Analytical

  • Separation of colors and scents from candle wax

    Separation and detection and additives from scented candles While electric lighting has have largely replaced candles as a light source, they are still popular for decorative purposes. Originally from bees’ wax, modern candles are typically made from paraffin or stearin. Often, coloring and scents are added to candles. These additives can be separated from the candle wax by ...


    By BÜCHI Labortechnik AG

  • Enhanced Purification of Capsaicins with the CombiFlash® EZ Prep

    Abstract In this application note, capsaicins are used as a model for compounds difficult to resolve with flash chromatography. Capsaicin compounds possess very similar structures making them difficult to resolve from each other. Although these compounds can be resolved on flash chromatography columns, such as the RediSep® Rf Gold C18, preparative high pressure liquid chromatography ...


    By Teledyne ISCO

  • Improved Productivity and Savings with RediSep Rf Gold® Columns

    Abstract The RediSep Rf Gold® high performance columns now provide organic chemists with more resolving capability in their flash chromatography purification through the utilization of smaller, spherical media. Finer particle sizes (20–40 µm) easily purify compounds that were previously unresolved with classic flash grade silica (40–60 µm, 60Å). RediSep ...


    By Teledyne ISCO

  • Higher Resolution Results with RediSep Rf Gold® Silica Columns

    Abstract The RediSep Rf Gold silica columns now provide organic chemists with more resolution capability in their Flash chromatography purification. Through smaller particle sizes, compounds that were previously unresolved with classic Flash grade silica (40–60 µm, 60Å) are now easily purified. RediSep Rf Gold silica columns are distinguished in the market by an ...


    By Teledyne ISCO

  • Loading capacity of silica flash cartridges

    FlashPure Cartridges Optimizing flash chromatography requires finding the ideal cartridge and conditions for a given sample. As the goal is to prepare the largest possible amount of pure sample in the shortest possible time and with a minimum use of solvent, it is crucial to know how high loadings affect the separation for different cartridges. Unlike analytical chromatography, preparative ...


    By BÜCHI Labortechnik AG

  • Scale-up of a packed bed column for wastewater treatment

    After checking the success of the biosorption process to remove heavy metals from wastewater using olive tree pruning as a cheap biosorbent in the laboratory scale, the scale-up is necessary to progress towards industrial applications chance. The aim of this work was the study of the effect of scale-up in the process of biosorption of Pb(II) with olive tree pruning in a packed bed column. ...


    By IWA Publishing

  • Chromatotec in International Labmate

    Find out Chromatotec expertise in the last issue of International Labmate with an article on “On-Line Fast Analysis of AMC from ppt to % levels in Clean Air Room". The complete article is available in October/November 2017 issue of International Labmate (Volume 42 Issue 7), or read it  ...


    By Chromatotec Group

  • Transition metals cobaltites spinel for depollution of NOₓ emissions using SCR technology

    Abstract The catalytic performance of various transition metal (M = Cu, Mn, and Ni) cobaltites prepared by nanocasting method were investigated for the selective catalytic reduction (SCR) of NO under lean burn conditions. KIT-6 was used as a hard template in the nanocasting method for preparation of catalysts. The catalyst samples were characterized by various techniques such as ...


    By ECO PHYSICS AG

  • Waters HPLC & UHPLC Application Notes at Your Finger Tips

    Summary A quick reference notebook to Waters HPLC/UHPLC application note highlights.   140 application notes covering a wide range of markets, such as Pharma, Food, and Health Science. Condensed one page format highlighting experimental conditions and chromatographic results. Tips on how to choose the best column to deliver ...


    By Waters Corporation

  • A prototype of novel agro-waste based column bed device for removal of textile dye Optilan Red

    The aim of the study was to assess the potentiality of an agro-waste (sugarcane bagasse) for removal of the textile dye (Optilan Red) using novel column based filtration unit with a packed column of chemically treated sugarcane bagasse. The treated and untreated sugarcane bagasse (biosorbent) were characterized by Fourier transform infrared (FT-IR) spectroscopy. Effect of initial dye ...


    By IWA Publishing

  • Modeling of chromium (VI) adsorption from aqueous solutions using Jordanian Zeolitic Tuff

    The probable use of Jordanian natural zeolitic tuff in wastewater treatment as natural adsorbent for the removal of Cr (VI) ions from aqueous solution in continuous fixed bed columns was tested experimentally and theoretically. The tested zeolitic tuff was obtained from Al Hala volcano (HZ) located in southern part of Jordan and subjected to crushing and sieving only without any further ...


    By IWA Publishing

  • The Clog Blog

    Clogging and over pressuring are definitely problematic for Liquid Chromatography columns. Back in 2005 John Dolan’s sage advice to chromatographers to make an LC column last forever was simple, “Never open the box!” As John pointed out, this is not practical and I have to agree. But as an LC column manufacturer I have seen remarks from customers regarding clogging as though it ...


    By Restek Corporation

  • Webinar Recap: “Developing, Testing, and Troubleshooting Chromatography Method Transfer”

    Hi, I’m Tom Wheat, Principal Scientist at Waters, and I recently hosted a webinar entitled, “Developing, Testing and Troubleshooting Chromatography Method Transfer.” Over the course of the webinar, we discussed the transfer of chromatographic methods that occurs at many stages in the development and production of a product. In its simplest form, the method is moved from one ...


    By Waters Corporation

  • High-Resolution Ultrahigh-Pressure Long Column Reversed-Phase Liquid Chromatography for Top-down Proteomics

    Separation of proteoforms for global intact protein analysis (i.e. top-down proteomics) has lagged well behind what is achievable for peptides in traditional bottom-up proteomic approach and is becoming a true bottle neck for top-down proteomics. Herein, we report use of long (≥1 M) columns containing short alkyl (C1-C4) bonded phases to achieve high-resolution RPLC for separation of ...

  • Some notes about Fats and Oils, cis/trans-Fatty acids and our latest re-launched RT 2560

    I recently posted a Blog regarding some notes about Fats and Oils, FAMES and our Famewax column, which can be found here. In Food Industry the challenge may be a bit heavier, if the amount of Trans Fatty Acids is requested. There is scientific consensus that trans fats intake has a negative effect on human health: more specifically, consumption of trans fats ...


    By Restek Corporation

  • Top 16 for 2016 - Restek LC article makes the cut

    If you are an avid chromatographer you likely subscribe to LC/GC magazine or its popular electronic version, E-Separation Solutions. It is definitely the place to go for news and information related to all things Chromatography. Over the years Restek has had many an article published in LC/GC and, full disclosure, we advertise there as well. Who in the business doesn’t? It is the place ...


    By Restek Corporation

  • Fluorophenyl LC Phases- what you should know

     They may be called PFP, PFPP, pentafluorophenyl, fluorophenyl or F5 phases. What they all have in common is the structure shown above (the pentafluorophenyl  group) attached to the silica particles. Most modern phases contain a propyl spacer between the above group and the silica, so that the phase looks something like this: ...


    By Restek Corporation

  • Photocatalytic degradation of tartrazine dye using CuO straw-sheaf-like nanostructures

    Straw-sheaf-like CuO nanostructures were fruitfully synthesized using a chemical precipitation approach for the photocatalytic degradation assessment of tartrazine. Phase identification, composition, and morphological outlook of prepared CuO nanostructures were established by X-ray diffraction and scanning electron microscopy analysis. The photocatalytic performance of the synthesized CuO ...


    By IWA Publishing

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