Photometry Applications in Russia
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Flame Photometer for Measurement of Calcium in Serum & Urine
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 ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement of Potassium and Sodium in Wine
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 ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement of Calcium in Biological Samples
A number of methods have been reported for the measurement of calcium in biological materials by flame photometry or titration. This method employs trichloroacetic acid (TCA) to precipitate the proteins and has been found to be adequate to extract all of the calcium from tissue samples. Sodium, potassium and phosphate caused no significant interference and calcium concentration in the range of 0 to 2 µg/ml is readily determined. ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement of Calcium and Potassium in Cereals
Commercial cereals vary considerably in composition, both in their formulation and the ingredients added to enrich these products. 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 salts. ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Salinity in Processed Foods
Sodium chloride is an essential ingredient of all processed foods; it is needed to enhance flavour and increase shelf life. In many processed foods, additional sodium is added as a flavour enhancer; potassium and calcium are also naturally present but not normally used as processing ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement of Sodium and Potassium in Dried Milk
Dried milk was dissolved into an aqueous solution for analysis via flame photometry. The test solutions and reference solutions are measured directly following dilution with deionised distilled ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement of Potassium and Sodium in Meat
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). ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Calcium in Unashed Plant Leaves
This procedure uses a TCA (trichloroacetic acid) extraction of the tissue to release all of the ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement of Potassium and Sodium in Bread
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 ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement of Sodium and Potassium in Silicate Rocks
This method for the measurement of sodium and potassium in silicate rocks uses a borate fusion ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement of Potassium in Unashed Plant Leaves
This method uses a suspension of ground plant material to directly measure the potassium concentration. It eliminates the usual steps of ashing and subsequent dissolution of the resulting ash. The method was compared to alternative methods such as chemical analysis and spectrophotometric methods. Collaborative studies using a range of samples gave a mean of 1.74% potassium by this extraction technique as compared to 1.75% by alternative methods. The standard deviation of an analysis in the two different sample ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement of Sodium and Potassium in Cheese
Cheese was wet ashed with a combination of acid and a high temperature oven to form a dissolvable product ready for analysis via flame ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement of Calcium in Fresh Fruit
In most cases, it was found that flame photometry was well suited for the determination of sodium, potassium and calcium in fresh fruits, using the wet ashing technique as given below. There are significant differences in the composition between different varieties of the same fruit, although these differences are not usually considered to be nutritionally ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Recommended Sample Handling Techniques & Considerations
Preparation of Glassware: Thoroughly clean and rinse all glassware with the supplied BWB Technologies deionised distilled water to ensure that it is clean and free of extractable sodium and potassium. Glassware should be acid cleaned and rinsed thoroughly in deionised double distilled water prior to use to avoid contamination from extractable metals under ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement of Trace Elements in Biodiesel
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. These European Standards specify a method for the determination of potassium of ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Units of Concentration
here are many different ways to express concentration of a ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Potassium Extraction from Soil
Principle: Potassium was extracted from a soil sample with acidified ammonium lactate to determine plant available potassium ionic concentration present in the ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement of Calcium in DNA and DNP
The calcium content of aqueous solutions of deoxyribonucleic acid (DNA) and deoxyribonucleoprotein (DNP) cannot assayed directly because of interference effects. An acid extraction procedure enabled direct measurements of calcium in DNA and DNP, or a standard addition technique was used at higher ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Measurement Of Lithium In Saliva Sector
The use of lithium carbonate for the treatment of bipolar disorders and depression is well established. However, for the treatment to be effective, it must be managed closely, to ensure the dose is maintained within the normal therapeutic range. ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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Flame Photometer for Determination of Na in Biodiesel using Dry Decomposition for Sample Preparation
The sample of biodiesel is weighed into a crucible and placed in a heating muffle furnace. Two temperatures are used in the heating program for the dry decomposition: the first temperature (250ºC) is maintained for 1 hour to dry the sample. After this the temperature is progressively elevated to 600ºC and maintained for 4 hours to eliminate the remaining organic material. ...
By BWB Technologies Ltd. Distributor in Moskva, RUSSIA.
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