Chemical analysis

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facet applications:Chemical analysis

facet applications:Photometry and reflectometry

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Showing 1-30 of 62 results

Method: Photometric determination with 2,2'-dinitro-5,5'-dithiodibenzoic acid (Ellman's reagent)

The use of veterinary drugs may be integral to the process of raising food producing animals and fish. These can include antibiotics, hormones, and steroids.

Analytical Method: Zinc in soils

Photometric determination with pyridylazoresorcinol (PAR) subsequent to acid extraction

Determination of the Deterioration of Bleachability Index (DOBI) of Raw Palm Oil acc. to DIN EN ISO 17932:2011

Method: UV/VIS spectrophotometry; Method No. 2524

Analytical Method: Copper (total) in effluents, high organic content

Photometric determination with Cuprizon subsequent to acid mineralisation

Analytical Method: Analytical Quality Assurance, Standard for Free Chlorine (DIN)

Preparation of a standard solution for free Chlorine according to DIN EN ISO 7393

Analyze Iron (Total) in Plant Material

Photometric determination subsequent to acid mineralisation

Analytical Method for Determination of the Solution Color of Raw Sugars, Brown Sugars and Colored Syrups at pH 7.0 (According to ICUMSA Method GS1/3-7)

Method: Spectrophotometric Color Determination at 420 nm Zero adjustment For each measurement series, a zero adjustment is required. It is recommended to use the same cell for zero adjustment and for sample measurement. The zeroing procedure for the measurement series is automatically prompted by

Analytical Method: Analytical Quality Assurance, Standard for Free Chlorine (dichloroisocyanuric acid)

AQA Standard for free chlorine - Preparation of a standard solution for free chlorine

Analytical Method: Analytical Quality Assurance, Standard for Formaldehyde

Preparation of a standard solution for Formaldehyde

Ammonium in Effluents

Step-by-step method describing the photometric determination of ammonium ions in effluents using Spectroquant® test kits and spectrophotometer.

Determination of Ammonium in Soils

Ammonium is the naturally preferred source of nitrogen for plant growth and there is an increasing global demand for organic food products.

Determination of Silver in Water and Wastewater: Photometric Determination Using Phenanthroline Method and Eosin Y

The article describes the sample preparation and photometric determination of silver concentration in water samples using Spectroquant® photometers and test kits.

Ultrasensitive Silicate Determination in Water

Rapid and sensitive test for silicate-induced scale deposits ensures industrial plant efficiency and sustainability.

Sucrose in Soft Drinks

Reflectometric determination of sucrose in soft drinks using Reflectoquant® test strips and reflectometer for in-process control.

Determination of Nitrite in Compost

Photometric determination of nitrite ions in compost by Griess method using Spectroquant®</sup test kits and spectrophotometer.

Determination of Nitrate in Compost

Learn about the photometric determination of nitrate ions in compost using Spectroquant® test kits and spectrophotometer.

Reflectometric Determination of DL Lactic Acid in Dairy Products

Quick and accurate analysis of D- and L-lactic acid in dairy products using Reflectoquant® Lactic Acid Test upon reaction with lactate dehydrogenase (LDH).

Determination of o-Phosphate in Ground and Surface Water

Photometric determination of phosphate ions in water with ammonium molybdate using Spectroquant® test kits and a UV/VIS spectrophotometer.

Determination of Total Nitrogen in Soil

Photometric determination of total nitrogen in soil samples by phosphorus molybdenum blue method using Spectroquant® test kits.

Determination of Ammonium in Compost

Photometric measurement of ammonium ions in compost samples by indophenol blue method using Spectroquant® test kits and spectrophotometer.

Ammonium Photometric Determination in Drinking and Surface Water

Photometric determination of ammonium ions in drinking and surface water samples by indophenol blue method using Spectroquant® test kits and spectrophotometer.

Estimation of Proline in Fruit and Vegetable Juices

Spectrophotometric determination of proline by the Ninhydrin method, per EN 1141 and German Food and Feed Code §64 LFBG 31.00-7.

Analysis of Residual Solvents in Hemp Extracts

SPME enables rapid, sensitive GC/MS analysis of residual solvents in hemp extract, ensuring accuracy and efficiency.

Complete Workflow for Comprehensive Cannabis Terpenes Analysis

Complete workflow for the comprehensive analysis of terpenes in cannabis

Analytical Method: Copper (total) in feedstuffs

Photometric determination with Cuprizon subsequent to acid mineralisation

Analytical Method: Lead in Waste Water with High Concentrations of Calcium

Photometric determination with PAR subsequent to separation of lead with Sodium diethyldithiocarbaminate

Determination of Bisphenol A in Drinking Water

A comprehensive sample preparation and analytical procedure was developed by Supelco for determining BPA in drinking water.

Iodine in Table Salt

Analytical Method: Iodine in table salt

Derivatization of Fatty acids to FAMEs

Explore how GC can be used to analyze fatty acids either as free fatty acids or as fatty acid methyl esters.

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