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Photometry and reflectometry

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facet applications:Photometry and reflectometry
facet content type:Technical Article
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.
Calculating Your Working Tolerance: A Guideline
Guideline to calculate your working tolerance - Certified Standard Solutions (CRM)
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
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.
Navigating Disinfection Control in Food and Beverage Manufacturing
Learn about disinfection control and how to select the right disinfectant among the various options available in its methods and instrumentation based on photometry and reflectometry.
pH in Fruit Juices
An easy-to-use, economical, and smartphone-based reliable determination of pH in fruit juices using the MQuant® pH test strips and the MQuant® StripScan app.
Ammonium in Wastewater
Step-by-step accurate reflectometric determination of ammonium in wastewater with Nessler’s reagent or Indophenol blue using Reflectroquant® system and test strips.
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
Determination of Sialic Acid in Milk
Discover the detection of milk adulteration by whey using spectrophotometric estimation of sialic acid in three different milk brands. Learn more about this essential technique in our application note.
pH in Soft Drinks
An easy-to-use and economical approach for reliable determination of pH of soft drinks with MQuant® pH test strips and MQuant® StripScan App.
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.
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.
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.
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.
Analytical Method: Analytical Quality Assurance, Standard for COD/Chloride
Preparation of a standard solution for COD/chloride
Nitrate in Vegetables
Step-by-step method describing the reflectometric determination of nitrate levels in various vegetables after reduction to nitrite and detection with Griess reagent using Reflectoquant® system and test strips.
Photometric determination of Nitrate in Effluents
A step-by-step procedure for the photometric determination of Nitrate in effluents using Spectroquant® test kits and photometer for a precise and quantitative analysis.
Nitrate in Wastewater
Step-by-step method describing the reflectometric determination of nitrate in wastewater after reduction to nitrite and detection with Griess reagent using Reflectoquant® test strips and reflectometer.
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
Testing Drinking Water - An Overview of National & International Regulations
An overview of USEPA, EU regulations, and various testing methods to ensure drinking water safety.
pH of Milk and Milk Products
An easy-to-use, economical, and smartphone-based reliable pH determination of milk and milk products using the MQuant® pH test strips and the MQuant® StripScan App.
K270 Olive Oil Commission Regulation (EEC) No 2568/91 Annex IX
Learn about the UV-spectrometric determination of the K270 nm value of olive oil, assessing the UV absorbance at 270 nm to ensure quality and compliance with regulatory standards.
K268 Olive Oil Commission Regulation (EEC) No 2568/91 Annex IX
Learn about the UV-spectrometric determination of the K268 nm value of olive oil, assessing the UV absorbance at 268 nm, to ensure quality and compliance with regulatory standards.
Measuring Chemical Oxygen Demand in Water Treatment Facilities
We are a global leader in the life science industry and have produced test kits to measure numerous analytes. Water Online spoke with us about advances in measuring chemical oxygen demand.