Applications

Highly pigmented foods, such as spinach, require cleanup prior to analysis for pesticide residues. A dual-layer SPE tube containing graphitized carbon and aminopropyl on silica (NH2) is often used because; Carbon removes pigments and sterols and NH2 removes fatty acids, polar pigments, organic acids, and sugars. Removing these matrix materials reduces interferences that can lead to ion suppression in LC-MS, inlet contamination in GC-MS, and column contamination for both techniques. Our Supel Sphere Carbon/NH2 SPE tube uses spherical materials for both the carbon and NH2 layers, providing fast, more consistent flows compared to tubes containing granular material. This allows gravity elution (instead of vacuum elution) to be applied to Supel Sphere tubes, resulting in more contact time between extracts and sorbents.

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

A group of 30 compounds was selected, representing pesticides, acaricides, insecticides, and fungicides. These samples were analyzed using Supel™ QuE QuEChERS and an Ascentis® Express RP-Amide HPLC Column.

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

Fungicide carbendazim can some times be used to combat mold on citrus fruits including oranges. Recently, low residue levels of the fungicide were reported to be present in the bulk orange juice import shipments to the USA. Because this compound can persist through processing steps and may be found in the final consumer product, many government agencies have established maximum residue limits (MRLs) to ensure the safety of their population. Presented here is a single method, involving fast and effective QuEChERS cleanup, suitable for various orange juice matrices. The choice of PSA/C18 sorbents reduced interferences, resulting in greater recoveries and less ion-suppression. Because the QuEChERS method is fast, it only adds a few minutes to the sample preparation procedure. Sample processing using QuEChERS with PSA/C18 allows analysts to accurately process various matrices in a single workflow, with very little additional sample preparation time.

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

Control Composting Odors, Naturally: Municipal sludge is often composted in indoor facilities or composting sheds. These areas create significant odor control challenges. Ecosorb products, either evaporated or atomized in concentrate form with nozzles or humidifying fans, control industrial odors even in very large composting facilities.

By OMI Industries (OMI) based in Long Grove, ILLINOIS (USA).

Mycotoxins are a diverse group comprised of hundreds of secondary metabolic products of various fungal species. Several show marked toxicity in humans. Contamination of the food supply with mycotoxins is increasingly prevalent, and can occur during growth, harvest, transportation, processing or storage. Techniques to reduce mycotoxin concentration after contamination are expensive, unreliable and sometimes reversible. Therefore, the removal of contaminated products from the food chain is a primary means of eliminating human exposure. The sensitive and accurate detection of very low levels of these compounds is critical to efforts to identify contaminated products. LC-MS/MS is a popular analytical technique for this purpose. This application explores using Ascentis® Express RP-Amide and Ascentis Express F5 HPLC columns to perform this analysis.

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

For different applications in research as well as for academic education

By BÜCHI Labortechnik AG based in Postfach, SWITZERLAND.

Three reasons why ozone in aquaculture improves water quality and increase aquaculture productivity. As recirculating aquaculture systems (RAS) operate by reusing the fish tank water it is essential to control the water quality. Many studies show that treating RAS systems with ozone increases productivity as fish health and survival is increased.

By Primozone Production AB based in Löddeköpinge, SWEDEN.

OTT Hydromet sensors can provide key information on trend identification and regulatory compliance for water quality and quantity parameters around agriculture and irrigation activities.

By The OTT Hydromet Group based in Kempten, GERMANY.

`A technique of growing plants in nutrient solution”. Hydroponics literally means water-working or water-activation. It is a cultivation technique for growing plants in highly oxygenated, nutrient enriched water, rather than soil. The nutrient solution and its management are the cornerstone for a successful hydroponics system. The function of a hydroponics nutrient solution is to supply the plant roots with water, oxygen and essential mineral elements in soluble form. In soil, biological decomposition breaks down organic matter into basic nutrients that plants feed on. Water dissolves these nutrients which allows uptake by the roots. For a plant to receive a well balanced diet, everything in the soil must be in perfect balance.

By Myron L Company based in Carlsbad, CALIFORNIA (USA).

30 years of experience in the design, construction, and operation of waste-to-energy plants for a wide range of industrial and municipal clients. Our proprietary anaerobic treatment technologies process wastewater and sludge to produce biogas, which can b

By Fluence Corporation based in White Plains, NEW YORK (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.

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

Sodium Hypochlorite. Chlorine. SO2. Citric Acid. Lime. Phosphoric Acid. Sulfuric Acid. Copper Sulfate.

By Carus Corporation based in Peru, ILLINOIS (USA).

The method enables fast quantitative determination in feeds, mixed fodders, and raw materials of the following amino acids: arginine, lysine, tyro sine, phenylalanine, histidine, leucine and iso -leucine (total), methionine, valine, proline, alanine, glycine, cystine, tryptophan, aspartic and glutamic acids.

Since during the sample decomposition asparagine and glutamine are hydrolyzed to aspartic and glutamic acids, respectively, the content of these two acids represents the total content of both the acids and the amides.

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

The method enables fast quantitative determination in feeds, mixed fodders, and raw materials of the following amino acids: arginine, lysine, tyrosine, phenylalanine, histidine, leucine and iso-leucine (total), methionine, valine, proline, alanine, glycine, cystine, tryptophan, aspartic and glutamic acids. Since during the sample decomposition asparagine and glutamine are hydrolyzed to aspartic and glutamic acids, respectively, the content of these two acids represents the total content of both the acids and the amides. 

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

Introduction

The technical directives and regulatory requirements specify the total content and relative contents of fructose, glucose and saccharose in juices, nonalcoholic and alcoholic beverages (incl. wines and winemaking materials), fruit and vegetable products, honey, and bioactive food additives. 

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

TenCate has a long history in modern agriculture, also in supplying technical textile solutions for livestock and especially the dairy cattle industry.

TenCate products make the difference in various ways. For example, TenCate Nicolon cow mattress covers improve cow comfort which increases milk production and TenCate Nicosil silage covers improve the quality of a farmers fodder.

By TenCate Geosynthetics Netherlands bv based in AE in Nijverdal, NETHERLANDS.

Nicolon Ground Cover Fabrics control weeds found in land maintained by professional growers and landscapers. These highly useful fabrics feature woven polypropylene that allows water and nutrients to pass through while preventing roots from implanting into the soil. Available in widths from 3 to 15 feet (0.90 x 4.5m), Nicolon ground cover fabrics can also be utilized in soil separation and barrier fencing applications.

By TenCate Geosynthetics Netherlands bv based in AE in Nijverdal, NETHERLANDS.

The Toptex winter protection fabric safely ensures the protection of plants against frost, desiccation and solar radiation.

By TenCate Geosynthetics Netherlands bv based in AE in Nijverdal, NETHERLANDS.

The Toptex fabric is a high grade membrane to protect straw, sugar beet and potato harvests from frost and rain, thereby reducing the amount of clinging clay on beets or potatoes and efficiently leading to less cleaning water needed in the process. On top of this, dried harvests offer a higher yield for the farmer and better quality for the consumer.

By TenCate Geosynthetics Netherlands bv based in AE in Nijverdal, NETHERLANDS.

By Analytik Jena AG based in Jena, GERMANY.