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Sample Dilution Product Applications In North America
15 applications found
Because the analytes are already in solution, there is no need for extensive sample preparation. Dilution followed by direct injection into an HPLC is typically suitable. ...
BySigma-Aldrich based in Bellefonte, PENNSYLVANIA (USA)
These methods are adapted from methods for the determination of sodium and potassium in fatty-acid methyl ester samples. The sample is diluted with an organic solvent (xylene, cyclohexane or petroleum ether) plus a stabiliser. The calibration standards which have a similar matrix to the prepared sample solutions, are prepared from sodium and potassium organometallic salts which are dissolved in a solution of xylene with a stabiliser. ...
ByBWB Technologies Ltd. based in Newbury, UNITED KINGDOM
This method reduces or removes potential interference from sodium, potassium and phosphates normally present in serum and urine by diluting the samples with a diluent containing ethylenediaminetetraacetic acid ...
ByBWB Technologies Ltd. based in Newbury, UNITED KINGDOM
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Introduction: The method is used for the determination of acetic acid (as acetate ions) in the samples of natural water, drinking water, and waste water by capillary ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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The organic acids profile in wine is a highly informative parameter since it reveals important features of the whole technological process. It is also one of the most important criteria for wine authentication. In spirits like cognac, brandy or whiskey, the presence of certain organic acids can indicate the violation of distillation or maturation processes or reveal the tendency to precipitate during storage. Some organic acids (sorbic, benzoic, ascorbic) can serve as preservatives; their presence is strictly ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
Take a sample of lettuce and remove any soil but do not wash the plant tissue as doing so may reduce the number of ions in sample. ...
ByAptisens based in Little Island, IRELAND
Cheese was wet ashed with a combination of acid and a high temperature oven to form a dissolvable product ready for analysis via flame ...
ByBWB Technologies Ltd. based in Newbury, UNITED KINGDOM
Several different techniques can be used for sample digestion and extraction of sodium and/or potassium: oven ashing, perchloric acid ashing, extraction by boiling and acidification with HNO3 as well as extraction by homogenisation in 2% trichloroacetic acid (TCA). ...
ByBWB Technologies Ltd. based in Newbury, UNITED KINGDOM
Wine is of particular interest nutritionally because it is typically low in sodium and relatively high in potassium. Sodium is the predominant cation in breakfast cereals, at levels reaching 8mg/g. Potassium and calcium also vary, particularly in wheat-based products and those enriched with milk products or calcium ...
ByBWB Technologies Ltd. based in Newbury, UNITED KINGDOM
A traditional method of preparing powder samples for transmission IR analysis is to dilute them in potassium bromide powder and press the mixture into a transparent solid pellet or disc. ...
BySpecac based in Orpington, UNITED KINGDOM
Bread contributes about one-sixth of daily salt intake and is used to improve flavour and texture. The amount of sodium in bread can differ significantly, depending upon brand and type of grain used, ranging from 592mg/100g to 748mg/100g. The level of sodium in bread is primarily due to the amount of salt added to the dough during manufacture. The amount of potassium is determined by the type of flour and the washing and bleaching operations during cereal processing. Bread does not make a significant contribution ...
ByBWB Technologies Ltd. based in Newbury, UNITED KINGDOM
As lead acid batteries are charged, minute quantities of hydrogen (H2) gas are produced. Normally, the amount of hydrogen generated during charging is not of a sufficient quantity to cause concern. There are instances however, where for various reasons, hydrogen may accumulate to create potentially hazardous gas ...
ByArmstrong Monitoring Corporation (AMC) based in Ottawa, ONTARIO (CANADA)
Bacterial indicators are enumerated in surface/recreational waters to assess the presence and level of fecal contamination and thus determine the potential for disease. Total Coliforms and E. Coli are widely used in regulatory monitoring of surface waters. E. Coli is specific to fecal sources and is therefore recommended as the main indicator of fecal pollution. E. Coli is present in extremely large numbers in the feces of all mammals, and does not multiply appreciably in the environment outside of its host. The ...
ByBluewater Bioscience Inc. based in Toronto, ONTARIO (CANADA)
IUL’ laboratory blender, known as Masticator, carries out a profound homogenization which makes it possible to obtain a sample perfectly representative of the food, drug, cosmetic, or any kind of material that has to be ...
ByIUL S.A. based in Barcelona, SPAIN
Biodegradation tests involve testing samples in response to various parameters: dilution, nutrient addition, pH, temperature, and others. The pattern of oxygen uptake in aerobic tests; nitrogen gas production in anoxic denitrification tests; methane production in methanogenic tests; hydrogen production during glycolysis; and carbon dioxide production during fermentation reactions gives a measure of the rate and extent of biodegradation of the organic constituents of the test ...
ByRespirometer Systems and Applications, LLC (RSA) based in Fayetteville, ARKANSAS (USA)