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All articles from Exeter Analytical

  Advance techniques in dealing with Volatile liquid samples

The analysis of liquid samples, including volatile liquids, can be done quite easily on the CE440 Elemental Analyser without sacrificing accuracy or precision and without the need for expensive liquid autosamplers. Exeter Analytical has created a protocol for dealing with volatile samples. The protocol discusses the key techniques in sample handling and an introduction to the model 440 sample sealer....

 

  Fast, High Quality ICP Sample Data

To cope with an ever increasing demand for 24-hour turnaround of sample data, Warwick Analytical Service has invested in an additional state-of-the-art ICP spectrophotometer for its Coventry, UK facility.

Warwick Analytical Service the laboratory services division of Exeter AnalyticalOperating in an ISO 17025 and GMP compliant environment following strict operating procedures ensures Warwick Analytical Service (WAS) delivers top quality ICP data consistently. Equipped with several modern high resolution ICP-OES instruments and microwave digestion equipment - Warwick Analytical Service is able to offer its ICP analytical sample services on a wide range of sample types. Tracie Hart, Laboratory Manager at...

 

  Versatile & Safe Sample Preparation Unit for Elemental Analysis

The Oxygen Flask Combustion Unit from Exeter Analytical is designed for preparation of samples for single and mixed elemental analysis of chlorine, bromine, iodine, sulphur and phosphorus content.

Oxygen Flask Combustion UnitBased upon the internationally recognised Schöniger flask method - the Oxygen Flask Combustion Unit provides a safe and repeatable tool for combusting samples prior to elemental analysis by ion chromatography or titration. The unit remotely ignites samples inside a safety-interlocked chamber using focused infrared heat from two tungsten-halogen lamps. Integral pressure vents ensure the safe release of excess reaction pressure...

 

  Exeter Analytical Marks 21 Years in Europe

Specialists in CHN Microanalysis - Exeter Analytical are celebrating the 21st anniversary of opening their European headquarters in the UK.

exeter analyticalStarted in 1994 by the present European Manager (Paul Hemming) - Exeter Analytical (UK) Ltd is today a leading supplier of CHN microanalysis instruments, consumables and supplies to universities and government research labs as well as pharmaceutical, chemical, environmental, agricultural and waste reclamation organisations. Mr Hemming commented “As a company dedicated to CHN microanalysis our expertise and experience with...

 

  Using CHN Microanalysis to Determine Soil Health

Exeter Analytical reports on how its Model 440 CHN Microanalyser is being used to precisely determine the percentage Carbon (C) and Nitrogen (N) in soil samples. 

Exeter Analytical Model 440Understanding the health of your soil is vital to ensure good yields of crops grown in it. Two elements that are vital to plant growth are Carbon and Nitrogen, especially in their proportion to each other. Carbon, in the form of species such as carbohydrates, is important because of its energy content, whereas Nitrogen is essential for growth. Methods for determining the carbon and nitrogen content of soil samples have...

 

  Analysis of Carbon & Nitrogen in Fertilizers

The analysis of fertilizers to determine their Carbon and Nitrogen content can be done very rapidly and accurately on the Exeter Analytical Model 440 system. 

The Model 440 elemental analyser uses thermal conductivity detectors to simultaneously analyse the nitrogen, carbon and hydrogen content. Interferences are removed through column packing’s and the combusted sample is converted into carbon dioxide, water vapour and nitrogen. Sample preparation is straightforward. Approximately 1-3 mg of fertilizer is weighed out in a tin capsule which is placed in a nickel sleeve for sample containment...

 

  Determination of Percentage Carbon Hydrogen & Nitrogen in Liquid Samples

The Exeter Analytical Model 440 CHN microanalysis instrument can easily determine the percentage Carbon, Hydrogen & Nitrogen in liquid samples.

 Exeter Analytical Model 440Volatile liquids can be routinely analyzed without sacrificing accuracy or precision. Exeter Analytical Inc. has produced an application note that describes how a proprietary liquid sample preparation technique together with controlled introduction of the sealed capsules into the Model 440 eliminates the problems associated with analyzing even volatile liquids. In the described method, liquid samples are simply injected into sample containers and...

 

  Accurate Sub Milligram CHN Determination

A new report from Exeter Analytical demonstrates how the Model 440 CHN Analyser provides precise and accurate determination of percentage Carbon, Hydrogen and Nitrogen on samples as small as 0.3 milligrams (mg).

Precision & Accurate CHN Data Using Atropine (8-Methyl-8-azabicyclo[3.2.1]oct-3-yl) 3-hydroxy-2-phenylpropanoate)  as the test compound the Model 440 produced data from 0.3mg samples which only varied within +/- 0.12% of the theoretical CHN values. In environments such as pharmaceutical research and synthetic chemistry laboratories, where the weight of new compounds for analytical purposes is often limited, the ability to reliably generate reliable CHN data on...

 

  No-Compromise CHN Microanalysis System

Competitively priced, the Manual Model 440 CHN Microanalysis System from Exeter Analytical Inc. offers labs running smaller numbers of samples a no-compromise entry point into high performance CHN analysis. 

elemental analyzerThe Manual Model 440 enables you to precisely determine percentage levels of carbon, hydrogen and nitrogen (CHN) quickly, easily and reliably across the widest range of sample types. Low gas and reagent consumption combined with high reduction tube life allows the Manual Model 440 to deliver some of the lowest operating costs of any CHN Microanalysis system commercially available. Intuitive Windows based operating...

 

  New Technique for Carbon Fibre Analysis

Exeter Analytical Inc. has developed proprietary techniques based on their Model 440 CHN analyzer to enable accurate determination of percentage Carbon (C) and Hydrogen (H) in carbon fibre composite materials.

carbon fibreBenefiting from their unique strength to weight ratio and rigidity, the use of carbon fibre reinforced materials (composites) in aerospace, automotive, firearms, marine and sports equipment manufacture has rapidly expanded.  With this rapid growth in use comes the need for accurate carbon fibre composite materials determination. Carbon fibres are extremely difficult to completely combust and therefore analyze due to their very high...

 

  Consistent Consumable Quality Improves CHN Microanalysis Results

Exeter Analytical reports on how the consistency and quality of routine microanalysis consumables can have a significant effect on the variability of determined percentage carbon, hydrogen and nitrogen (CHN) results.

exeterpr90-An existing user of an Exeter Analytical Model 440 CHN analyser, driven by tight budgetary considerations, elected to try to save some money by buying consumables from a non-certified supplier.  However after a few weeks they noticed that blank carbon and hydrogen readings from CHN analyses performed with these new tin capsules and quartz reaction tubes had become higher and inconsistent.  In addition due to this new inconsistency the consumption of consumables had also...

 

  New Methodology for CHN Determination of Liquid Samples

Exeter Analytical has published an application note demonstrating the utility of its Model 440 CHN microanalysis system for precise determination of percentage Carbon, Hydrogen and Nitrogen content of often demanding liquid samples.

exeterpr89-image copyThe analysis of liquid samples, including volatile liquids, can be done quite easily on the Exeter Analytical Model 440 system without sacrificing accuracy or precision and without the need for expensive liquid autosamplers. The new application note 233 describes how a special liquid sample preparation technique together with controlled introduction of the sealed capsules into the Model 440 eliminates the problems associated with...

 

  Easy-to-Understand Introduction to CHN Microanalysis

CHN microanalysis is a key analytical technique for determining whether or not a sample is pure by providing a precise and accurate analysis of its percentage Carbon, Hydrogen and Nitrogen content and comparing the result versus theoretical figures.

Drawing upon over 25 years experience in the technique, Exeter Analytical Inc. has produced a video that provides an informed and easy-to-understand introduction to accurate determination of Carbon, Hydrogen and Nitrogen by CHN microanalysis....

 

  Identifying an Optimal Biofuel

The Model 440 Elemental Analyzer from Exeter Analytical Inc. is proven to provide precise percentage Carbon (C), Hydrogen (H) and Nitrogen (N) data on biomass samples in as little as 5 minutes.

exeterpr81Identifying an optimal biofuel from crop, grass, algae or tree (biomass) samples has traditionally been laborious and painstaking. Determining the percentage Hydrogen data enables easy calculation of the biomass sample gross or net calorific value.  With increasing global interest in 'Carbon Trading' the determination of percentage carbon provides accurate data to enable organisations (or countries) to buy and sell carbon permits as part of a program to reduce carbon emissions...

 

  Measuring the Organic Content in Geological Materials

Exeter Analytical reports that its Model 440 CHN Analyser provides a precise and accurate tool for determining the organic content of geological samples including soils, sediment and fossil fuels.

exeter analyserAs the Model 440 provides complete control over combustion parameters it is able to reproducibly achieve 100% combustion with the widest range of geological sample types. Though incorporation of extensive automation in the Model 440 and intuitive software ‚Äď the percentage Carbon (C), Hydrogen (H) and Nitrogen (N) in geological samples can be determined in as little as 5 minutes....

 

  Determining the Value of Waste Materials as Fuel Feedstock

Exeter Analytical Inc. has announced how their Model 440 CHN Elemental Analyzer is being widely used to determine the suitability of a waste material for use as a fuel in waste to energy plants.

exeter analyticsKey to assessing the value of a waste material as a potential fuel feedstock is in determining its Carbon (C) and Hydrogen (H) content.  The Carbon concentration when measured in conjunction with calorific value gives a measure of the energy content and therefore the usefulness of the waste sample as a renewable energy source.  The Hydrogen concentration is another key parameter to be measured and is used to calculate the samples net calorific value....

 

  Entry Level System Provides Top CHN Microanalysis Performance

Exeter Analytical has introduced an entry-level manual version of their high performance Model 440 Elemental Analyser

Entry Level System Provides Top CHN Microanalysis PerformanceExeter Analytical has introduced an entry-level manual version of their high performance Model 440 Elemental Analyser for determining percentage levels of carbon, hydrogen and nitrogen (CHN) quickly, easily and reliably across the widest range of sample types. Competitively priced, the manual Model 440 offers labs running smaller numbers of samples a no-compromise entry point into high performance CHN analysis. The manual Model 440 is based upon Exeter Analytical’s proven static combustion elemental analyser incorporating a unique horizontal furnace design...

 

  New CHN Analyzer for Contract Research Organizations and Service Labs

The Model 440 CHN analyzer from Exeter Analytical Inc.

Model 440 CHN analyzer from Exeter Analytical

The Model 440 CHN analyzer from Exeter Analytical Inc. has become the system of choice for many Contract Research Organizations and Service Labs because of its proven ability to accurately analyze the widest range of sample types - quickly, easily and reliably. Operating across a wide linear range, the Model 440 is capable of routinely determining  percentage Carbon, Hydrogen and Nitrogen levels in almost any sample type including organic compounds, pharmaceuticals, petrochemicals, polymers, refractory, environmental or natural materials (soil, plants or insects)....

 

  Accurate Analysis of Carbon Fibre Composites

Exeter Analytical, specialists in elemental microanalysis, has developed proprietary techniques based on their Model 440 CHN analyser to enable accurate determination of percentage Carbon (C) and Hydrogen (H) in Carbon fibre composite materials.

Accurate Analysis of Carbon Fibre CompositesCarbon fibre analysis is of great interest to developers of products that benefit from the unique strength to weight ratio and rigidity of Carbon fibre reinforced materials - often referred to as carbon fibre composites. Applications for Carbon fibre composites include aerospace, marine craft, formula 1 and high-end automobiles, bicycles, sports equipment and firearms manufacture. With this wide range of applications comes the need for accurate Carbon fibre / composite materials analysis...

 

  Video Introduction to CHN Microanalysis Technique

Exeter Analytical has produced a new video that provides an informative introduction to the technique of elemental microanalysis that provides precise determination of percentage Carbon (C), Hydrogen (H) and Nitrogen in a sample.

Video Introduction to CHN Microanalysis TechniqueThe use of CHN microanalysis as a routine technique to provide a precise and accurate elemental analysis of a sample is widely accepted across many market sectors worldwide. CHN microanalysis is a powerful and relatively straightforward method for determining whether or not a sample is pure by providing a precise and accurate analysis of a sample's percentage carbon, hydrogen and nitrogen content....

 

  Fast & Precise Biomass Analysis Tool

Exeter Analytical reports that its Model 440 Elemental Analyser provides a fast and precise analytical tool for the biomass industry.

Exeter Analytical reports that its Model 440 Elemental Analyser provides a fast and precise analytical tool for the biomass industry

Identifying a particular tree, crop, grass, or algae with the chemical composition to make it an optimal biofuel candidate has traditionally been laborious and painstaking.  The Exeter Analytical Model 440 Elemental Analyser can analyse a sample in as little as 6 minutes to provide precise percentage Carbon (C), Hydrogen (H) and Nitrogen (N) data.  Using the percentage Hydrogen data enables easy calculation of the biomass sample gross or net calorific value....

 

  Warwick Analytical Services Assist Local Council In Prosecution

Warwick Analytical Service has reported on analysis it carried out on behalf of Buckinghamshire County Council (UK) who were investigating a serious case of illegal dumping of dangerous chemicals.

Analysis using ICP-OES

As a result of laboratory analytical service data produced by Warwick Analytical Service (WAS) - Buckingham County Council (BCC) was able to successfully prosecute this criminal act. In this 'fly tipping' incident two drums of Sodium Hydroxide each containing significant amounts of the chemical were dumped in a location known to the Council and local police to be an area of where these activities occur regularly....

 

  Optimised CHN Analyser for Service Labs

In an environment where time is money - service laboratories worldwide trust the Exeter Analytical Model 440 CHN analyser because of its proven capability to accurately analyse the widest range of sample types for percentage Carbon, Hydrogen and Nitrogen (CHN) - quickly, easily and reliably

exeterpr75Operating across a wide linear range the Model 440 is capable of routinely analysing almost any sample type including organic compounds, pharmaceuticals, petrochemicals, polymers, refractory, environmental or natural materials (soil, plants or insects). The Model 440’s horizontal furnace design prevents cross contamination and allows for a greater number of samples between combustion tube changes as residue is routinely removed between each analysis...

 

  Measuring Sulfur Content Quickly & Reliably exeterpr69Warwick Analytical Service (WAS) is able to offer a routine service for precise determination of sulphur from ppm to % levels using Inductively Coupled Plasma - Optical Emission Spectrometry (ICP-OES) with good precision and accuracy. The Sulfur method is covered by the company's ISO 17025 and UKAS accreditation. Measuring Sulfur by ICP-OES measures the total sulfur, both organic and inorganic. Due to the sensitivity of the technique a broad range of sample weights can be used making the method applicable to a wide cross section of samples...

 

  Analyzing environmental samples for percentage levels of carbon, hydrogen and nitrogen CE 440 Elemental Analyzer from Exeter Analytical Analyzing environmental samples for percentage levels of carbon, hydrogen and nitrogen (CHN) is achieved quickly, easily and reliably using the CE 440 Elemental Analyzer from Exeter Analytical Inc. Traditional methodologies for determining CHN content of soil, plant and insect samples typically use macro-CHN or Kjehldahl Nitrogen analysis. While both these techniques are proven to generate useful data, both have drawbacks. Macro-CHN analyzers are relatively expensive to purchase and run compared to Micro-CHN systems, such as the CE 440, and Kjehldahl requires use of highly corrosive and toxic chemicals...

 

  Reliable method for characterising PFC's exeter analyticalExeter Analytical has developed a reliable analytical method for accurately determining the percentage Carbon (C), Hydrogen (H) and Nitrogen (N) content of polyfluorinated compounds (PFCs). Polyfluorinated compounds are extremely thermally and chemically stable and have soil, water and fat-repellent properties. They are nearly non-biodegradable and accumulate in the environment and the food chain...

 

  Characterising Renewable Building Materials 440 CHN Analyser from Exeter Analytical A Model 440 CHN Analyser from Exeter Analytical is being used by the Environmental Research Group (ERG) at the University of East London to help characterise renewable building materials. With over 23,000 students from 120 countries worldwide, the University of East London...

 

  CHN Elemental Analyzer for University Labs Model CE-440 CHN Elemental Analyzer from Exeter Analytical IncThe Model CE-440 CHN Elemental Analyzer from Exeter Analytical Inc. has established itself as the system of choice for many universities around the world through its proven unmatched accuracy and precision, low operating costs and wide applications flexibility. The Model CE-440 is a fully automated CHN/O/S elemental analyzer designed to give accurate, reliable results, over the widest range of sample types presented for analysis...

 

  CHN Microanalysis: A Key Technique for Sample Characterisation Exeter Analytical CHN microanalysis A white paper written by Exeter Analytical describes how CHN microanalysis provides a powerful and straightforward method for determining whether a sample is pure - a key aspect of sample characterisation. The paper discuss how by providing a precise and accurate analysis of the percentage Carbon, Hydrogen and Nitrogen in an organic sample - CHN microanalysis can compliment techniques such as Mass Spectrometry (MS) and Nuclear Magnetic Resonance (NMR) Spectrometry, thus enhancing the reliability of your analytical results...

 

  High Quality Microanalysis Consumables High Quality Microanalysis ConsumablesFor laboratories involved with elemental microanalysis - Exeter Analytical Inc. offers a single source for high quality, competitively priced CHN/O/S consumables and supplies irrespective of the analyzer they use...

 

  Safe Elemental Analysis Using Sch√∂niger Flask Method The Oxygen Flask Combustion Unit from Exeter Analytical Inc. provides a highly safe tool for preparing samples for elemental analysis of Halogens, Sulfur, Phosphorus and a number of metals using the Sch√∂niger flask method. The Sch√∂niger flask method is a well proven technique for combusting samples prior to elemental analysis by ion chromatography or titration. The Sch√∂niger flask method using the attractively priced OFCU-1 is capable of being used for repeatable determination of elemental composition from percentage levels to parts per million.

 

  Determination of organic carbon and nitrogen in marine sediments Exeter Analytical Model 440 CHN Elemental AnalyserExeter Analytical has published an optimised technique for direct determination of organic carbon and nitrogen in marine sediments. The filter based technique, using an Exeter Analytical Model 440 CHN Elemental Analyser, provides rapid and routine analysis of marine sediments, results are expressed in micrograms of Carbon and Nitrogen detected simplifying the calculation process. Analytical sensitivity is less than 1 microgram.

 

  CHN/O/S Analyzer for Wide Ranging Sample Types Model 440 Elemental Analyzer from Exeter Analytical The Model 440 Elemental Analyzer from Exeter Analytical Inc. is capable of precisely analyzing the widest range of sample types - quickly, easily and reliably. The Model 440 offers a wide linear range and is capable of routinely analyzing almost any sample type including organic compounds, pharmaceuticals, petrochemicals, polymers, refractory, environmental or natural materials (soil, plants or insects).

 

  Fast and Precise Sample Purity Checking by Warwick Analytical Service ast & Precise Sample Purity CheckingWarwick Analytical Service has developed a fast and precise analytical service for organisations seeking to check the purity of their samples. Using methodology covered by their UKAS ISO17025 accreditation - Warwick Analytical Service is able to investigate and precisely measure the percentage Carbon, Hydrogen and Nitrogen content of samples with an accuracy of better than +/- 0.3% for a wide range of sample types.

 

  Elemental Analyser Consumables Exeter Analytical Ltd is a leading international manufacturer and supplier of top quality consumables and supplies for elemental analysers.

 

  Consistent, Accurate and Precise ICP Data With growing numbers of laboratories requiring top quality data - Warwick Analytical Service has produced an analytical service note that demonstrates the accurate and precise ICP data the company routinely achieves for determination of trace metals in organic and inorganic materials.

 

  High Quality Quartz Reaction Tubes Manufactured from only high quality low hydroxyl materials - Quartz reaction tubes from Exeter Analytical enable laboratories to achieve consistent low level blanks thereby improving the precision and accuracy of your CHN microanalysis results.

 

  High Quality Copper for Precise Nitrogen / Protein Determinations Exeter Analytical is a leading supplier of high quality Copper (Cu) for determination of nitrogen/protein in food and agricultural materials using the Dumas method.

 

  Exeter Elemental Analyser Provides Insight Into Climate Change A Model CE440 Elemental Analyser from Exeter Analytical is being used by one of the world's leading environmental research centres, British Antarctic Survey (www.antarctica.ac.uk), in its climate change research on lake and ocean sediments.

 

  Highly versatile CHN Analyzer With its wide linear range, combined static and dynamic combustion technology and horizontal furnace design allowing for removal of residues between runs, the Exeter Analytical CE-440 CHN/O/S elemental analyser is uniquely capable of accurately analysing the widest range of sample types - quickly, easily and reliably.

 

  Accurate %CHN Results from Wide Ranging Sample Types With its wide linear range, combined static and dynamic combustion technology and horizontal furnace design allowing for removal of residues between runs, the Exeter Analytical CE-440 CHN/O/S elemental analyser is uniquely capable of accurately analysing the widest range of sample types - quickly, easily and reliably.

 

  Top Quality Microanalysis Consumables Exeter Analytical offers laboratories involved with elemental microanalysis a single source for top quality, competitively priced CHN/O/S consumables and supplies irrespective of the analyser they use.

 

  Determination of CHN content of soil and plant samples. New technical data is available from Exeter Analytical that demonstrates the utility of their Model 440 Microanalyser for precise determination of the percentage Carbon (C), Hydrogen (H) and Nitrogen (N) in heterogeneous soil, plant and insect samples.