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electrophoresis Applications

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    Determination of amino acids in beer and wort by capillary electrophoresis

    Free forms of amino acids in beer originate mostly from malt. The following method enables fast quantitative determination in beer and wort of the following free amino acids: arginine, lysine, tyrosine, phenylalanine, histidine, leucine and iso-leucine (total), methionine, valine, proline, alanine, glycine, cystine, tryptophan, aspartic and glutamic acids. Total content of amino acids is fdetermined after hydrolysis of proteins. 

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

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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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    Determination of hesperidin and naringin in juices using CAPEL-105M capillary electrophoresis system

    The method is intended for determination of hesperidin and naringin using capillary electrophoresis technique in order to reveal adulteration of juices. These components are tested in citrus juices, concentrated juices, nectars, juice-containing beverages, and fruit sauces that are produced primarily from oranges, grapefruits, tangerines, lemons, and limes. 

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

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    Determination of inorganic anions in aqueous matrices according to EPA 6500 and ASTM D6508-10 test methods

    This test method is applicable for determination of the dissolved inorganics anions; fluoride, bromide, chloride, nitrite, nitrate, ortho-phosphate, and sulfate in aqueous matrices using capillary ion electrophoresis with indirect UV detection. The method can be applied to drinking water, wastewater and ground water. 

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

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    Determination of water-soluble forms of inorganic and organic anions in soils, clays, peat, wastewater silt, activated sludge, and bottom sediments

    The method allows determination of water-soluble forms of inorganic (chlorides, sulfates, nitrates, fluorides and phosphates) and organics (acetates, formates, and oxalates) anions in soils, clays, peats, wastewater silts, activated sludges and bottom sediments by capillary electrophoresis method. 

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

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    Determination of dyes in beverages

    The method allows identification and determination of synthetic dyes in samples of soft and alcoholic drinks by capillary electrophoresis.

    The Capillary Electrophoresis (CE) method for the determination of synthetic dyes is based on their differential migration in a narrow quartz capillary under the influence of the applied electric field. Identification and quantitative determination of dyes is performed by measuring the UV absorbance at 254 nm (for “CAPEL® -103РТ/104Т” systems) or 215 nm (for “CAPEL® -105/105М” systems) wavelength. 

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

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    Determination of D- and L-isomers of tartaric and malic acids in wines, wine materials, and food additive

    Naturally occurred is predominantly L-form of tartaric acid whereas its D-form and the relevant racemic mixture can be artificially synthesized. Generally, artificial acidification of wine with tartaric acid is allowed by OIV, but only pure L-form must be used for this purpose. Thus the analysis of tartaric acid isomers either in food additives or directly in wine can be an important parameter in clarifying any deviations in wine production. Analysis of isomers of malic acid is also within the necessary oenological procedures stated in OIV recommendations. LUMEX INSTRUMENTS offers the present method which allows determination of L- and D-forms of tartaric and malic acids in wine, wine materials, and special food additives by capillary electrophoresis method. 

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

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    Determination of total sulfur dioxide in wine and beer

    Method allows determination of mass concentration of total sulfur dioxide (sulfurous acid and its salts, food additives E220–E228) in wine, wine materials, beer and beer products by capillary electrophoresis (CE) using capillary electrophoresis system “CAPEL® -105M”. The mass concentration of total sulfur dioxide is regulated by normative documents to be held within 100– 400 mg/L for different types of wine and wine materials and within 20–50 mg/L for beer products. According to European and Russian regulations it is allowed not to indicate on the labels the presence of sulfur dioxide in beverages if its concentration is less than 10 mg/L. 

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

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    Determination of organic acids in beverages

    The method allows determination of organic acids, in soft drinks (juices, fizz drinks) and alcoholic drinks (wines, beer). 

    The capillary electrophoresis method for evaluation of cations concentration is based on differential migration and separation of cations in electric field due to the difference in their electrophoretic mobility. Identification and quantitative determination of the analyzed cations is performed by indirect detection measuring UV absorption at 254 nm (for “CAPEL® -103RT/104T” systems) or 267 nm (for “CAPEL® -105/105M” systems) wavelength.

    The determination is not hindered by the presence of anions of ammonia, lithium, strontuim, barium, manganese, ferrum (II) in the quantities that are typical for the analyzed drinks. 

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

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