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Enzymatic Method for Determining Branched Chain Amino Acids (BCAA Assay)

Assay protocol for the colorimetric detection of Branched Chain Amino Acids (BCAA) in biological samples using the alanine assay kit.

What is FTIR Spectroscopy?

Learn about FTIR Spectroscopy (Fourier transform infared spectroscopy). Learn what is FTIR, what it does and how it works. Useful information on this widely used technique, example of FTIR graph chart and more.

Analytical Method: Analytical Quality Assurance, Standard for COD/chloride

Preparation of a standard solution for COD/chloride

Transmittance to Absorbance Table

Transmittance to absorbance table for fast conversion. Use this chart as a handy reference in the lab, classroom or field. The online transmittance chart is available to download and share.

Determination of Phospholipid Oxidation by UV/VIS Spectroscopy - Avanti® Polar Lipids

The percent oxidation of a phospholipid can be determined by using Beer’s Law to calculate the peroxidized phospholipid’s concentration from its absorbance at 234 nm.

An Easier, Faster, and Cost-Effective Option for Measuring Total Nitrogen

This total nitrogen test kit is faster, safer, more accurate and costs less than the traditional method. The Total Nitrogen Analysis test kit was developed to provide users with a single test method for determining total nitrogen levels in process

Phosphate in Groundwater and Surface Water: A Rapid and Reliable Determination Method using the Photometric Spectroquant® Test

The analysis of low concentrations of PO4-P in natural, uncontaminated waters is often challenging. The Spectroquant® photometric test provides an easy-to-use and sensitive method for quantification with results comparable to DIN EN ISO 6878.

测量水处理设施中的化学需氧量

我们是生命科学行业的全球领导者，并已生产出可测量多种分析物的测试试剂盒。Water Online与我们交谈了有关化学需氧量测量方面的进展。

Identification of Cell Culture Media with Raman Spectroscopy

Identification of cell culture media samples by traditional LC methods, such as amino acid or vitamin analysis, has high costs, and requires significant analytical expertise and laboratory space.

IR Spectrum Table

The IR Spectrum Table is a chart for use during infrared spectroscopy. The table lists IR spectroscopy frequency ranges, appearance of the vibration and absorptions for functional groups.

Sulfur Dioxide in Beer

Spectrophotometric determination of Sulfur Dioxide (SO2) in Beer with Elimann's reagent. Analytical method and sample preparation for Spectroquant® Sulfite Test.

Ultrasensitive Determination of Silicate in Process and Boiler Water Using Rapid Photometric Tests

Efficiency of industrial plants and equipment constitutes one of the basic preconditions for sustainable economic operations. One avoidable problem is posed by the undesirable build-up of deposits, i.e., scale – in pipes, boilers, and turbines, whose principal cause is silicate.

Analytical Method: Urea in water and wastewater, enzymatic determination

Urea in water and wastewater, enzymatic determination - Photometric determination using the indophenol blue method after cleavage of the urea

Safe Drinking Water Act & Clean Water Act – What is it?

The Safe Drinking Water Act reflects the primary drinking water regulation. Drinking water here means finished drinking water from the plant and the distribution lines. But the Safe Drinking Water Act covers also the ground water sources for raw water

Calculating Your Working Tolerance: A Guideline

Guideline to calculate your working tolerance - Certified Standard Solutions (CRM)

Sensitive Determination of Iron in Drinking Water, Mineral Water, Groundwater, and Spring Water Using Rapid Photometric Tests

Spectroquant® Iron Test - a suitable alternative to ICP or AAS for determination of iron in drinking water, mineral water, groundwater, and spring water.