chromatograph Applications

11 Results found
Only show results available in Virginia?
OK
  • Keyword: chromatograph ×

Flow meters for analytical flow solutions

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

Gas mass flow controllers are widely used in gas chromatographs in order to control carrier gases and to precision purge these instruments. Our instruments also find use in custom gas mixing and blending systems for environmental research.

Gas analyzers and detectors for the ethanol processing

by MOCON - Baseline     based in Lyons, COLORADO (USA)

Gas chromatographs and hydrocarbon analyzers can be key in adding value to the ethanol production process and protecting the environment from Volatile Organic Compound (VOC)emissions created during the process.

Measurement solution for FTIR Vs. GC in gas analysis

by Protea Limited     based in Middlewich, UNITED KINGDOM

Comparison of Technologies

A gas chromatograph (GC) has traditionally been the technology of choice for laboratory analysis of gas samples. GCs have been used for over 50 years in the qualification and quantification of complex mixtures of gases. The techniques and methodology required to run GCs are often a pre-requisite for any laboratory technician. Recent developments in Fourier Transform Infra-Red (FTIR) gas analysis has enabled this technology to start to replace GCs in the lab.

Flow meters for the general research flow solutions

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

Our instruments are widely used by original equipment manufacturers of gas chromatographs, mixing and blending systems and other pieces of analytical equipment. The mulitple gas capability and wide choice of flow controlllers-for high pressure, very low flows and corrosive gases-offer customers excellent application flexibility.

Waste water treatment plants Screening area: stripping

by Chromatotec Group     based in Val de Virvée, FRANCE

Context & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® offers high meteorological solutions. To ensure the safety of operatives in the screening building/area of waste water treatment works an H2S analyzer has been installed in the main building to complement the protection provided by individual monitors. Chromatographic measurements show that other sulfurous compounds including Methylmercaptans are present in the air in addition to H2S.

Improved Reproducibility and Reduced Sample Preparation Time for the HPLC Analysis of Aflatoxins in Raw Peanut Paste

by Sigma-Aldrich Co., LLC     based in Bellefonte, PENNSYLVANIA (USA)

The US FDA and international regulatory agencies have set contamination levels for aflatoxins in animal feedstuffs. Since Aspergillus may infect commodities pre-harvest, during storage or during processing, monitoring for aflatoxins in associated agricultural commodities at all stages of production is requisite. Field screening methods exist that are adequate to estimate contamination levels for aflatoxins. When additional confirmation or quantification is desired, chromatographic laboratory analysis is often necessary. Preparation of matrix samples prior to chromatographic analysis typically requires extraction and purification. Commonly, immunoaffinity columns (IAC), which employ a multi-step bind and elute mechanism to concentrate and purify aflatoxins, are used to purify matrix samples for subsequent analysis. Solid phase extraction (SPE), an alternate method which may use interference removal, can also be employed.

Chromatography systems for pharmaceutical industries

by Dikma Technologies Inc.     based in Lake Forest, CALIFORNIA (USA)

Dikma has over 15 years of R&D experience in chromatographic columns which have been widely used by pharmaceutical manufacturers.

Alkane (hydrocarbon) gas measurement for mudlogging in oil & gas drilling rigs

by MKS Instruments, Inc.     based in Andover, MASSACHUSETTS (USA)

The need for operator and maintainance intensive gas chromatograph (GC) analyzers was eliminated. Customer can now deploy all-optical, unattended sensor system for monitoring the composition of hydrocarbon gases (C1-C5) exiting the well bore which provides crucial information about the drilling formation that would save time and money.

Analysis of Isocyanates Using the ASSET™ EZ4-NCO Dry Sampler

by Sigma-Aldrich Co., LLC     based in Bellefonte, PENNSYLVANIA (USA)

Isocyanates are used as a raw material to produce a number of products . Personal exposure can occur while the products made with isocyanates are being applied, or when the materials are removed by grinding or thermal degradation. Workers who are exposed to these compounds are at risk for respiratory disorders and asthma. The highly reactive nature of the isocyanate compounds and the low occupational exposure limits put high demands on both sampling and analytical techniques for monitoring of isocyanates in air. We investigated the performance of the LC-MS and LC-MS-MS methods in the analysis of isocyanates using the new ASSET™ EZ4-NCO Dry Sampler. We found that the analytical method can successfully reach the quantitation limit for most isocyanates of 5 ng/mL in the final sample when LC-MS-MS analysis was used and the quantitation limit of 10 ng/mL when LC-MS analysis was used. All 11 compounds were well-resolved chromatographically using a 15 cm Ascentis Express C18 column.

Low concentrations monitoring of benzene and aromatic hydrocarbons (BTEX) for pollution control and environmental monitoring

by Environnement S.A     based in Poissy, FRANCE

With over 15 years of experience in the measurement of volatile organic compounds (VOC), Environment SA announces the VOC72M, a new generation analyzer for the measurement of BTEX compounds by gas chromatography with photo-ionization detector (PID). The VOC72M can handle up to 40 compounds and eight configurations for analysis. This compact and fully automated analyzer with wide voltage range specifications (90-240V) provides equivalent performance to the laboratory chromatographs and is particularly suited to fixe or mobile ambient air quality monitoring laboratories. The VOC72M is fitted with a PID detector new generation, much more sensitive, more stable and whose lamp does not need to be cleaned; the analyzer integrates flow control fittings a 3 levels security system built on and uses only one gas (nitrogen). This robust and low maintenance instrument performs all the functions (sampling, analysis and data management) in a simple and completely autonomous mode. It is a particular

Saran Bag application

by Analytical Specialties, Inc.     based in Elburn, ILLINOIS (USA)

Title : Preliminary Sampling Methodology and Analytical Procedures for Ambient Sulfur Hexafluoride, Corporate Author : ARMY MEDICAL ENVIRONMENTAL ENGINEERING RESEARCH UNIT EDGEWOOD ARSENAL MD Personal Author(s) : Luckan,Susan K. ; Cooper,William J. Report Date : JAN 1973 Pagination or Media Count : 23 Abstract : A preliminary evaluation of techniques of sampling and gas chromatographic analysis for low levels of sulfur hexafluoride was conducted to determine the most feasible method for available equipment. Using a Tracor MT-150 gas chromatograph equipped with Nickel 63 electron capture detector and polarized dc voltable, it was possible to detect sulfur hexafluoride at a concentration of 0.06 ppb with a 5A molecular sieve column and nitrogen carrier gas, without preconcentration of the sample. Also, a comparison of glass and Saran sampling materials proved that no detectable loss of the tracer gas resulted with the Saran bags (between 6 ppm and 0.06 ppb SF6

Need help finding the right suppliers?

Let the XPRTs do the work for you