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Photometry and reflectometry
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Showing 1-30 of 30 results
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.
Testing Drinking Water - An Overview of National & International Regulations
An overview of USEPA, EU regulations, and various testing methods to ensure drinking water safety.
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.
Safe Drinking Water Act & Clean Water Act
The Safe Drinking Water Act regulates finished drinking water, raw water sources, and distribution to ensure water safety.
Total Nitrogen Measurement Solution
Total Nitrogen Analysis kit offers a fast, accurate, and cost-effective method for water and wastewater testing.
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.
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.
Phosphate Determination in Water
Spectroquant® photometric test accurately quantifies low concentrations of PO4-P in natural waters.
Total Polyphenol Content in Apples and Bananas
A complete workflow for estimating the total polyphenol content of apple and banana samples, with gallic acid standard addition curve protocol.
Analytical Quality Assurance: Peracetic Acid Standard
Application Note details preparation of peracetic acid standard solution for analytical quality assurance (AQA) in testing laboratories.
Cell Density measurement by OD600 Method
Optical density measurement of bacterial cells at 600 nm using pre-programmed method in Spectroquant® Prove spectrophotometers.
K270 Olive Oil Commission Regulation (EEC) No 2568/91 Annex IX
Discover the K270 method for analyzing olive oil quality as per EEC Regulation 2568/91. Access detailed protocols and ensure compliance with standards.
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.
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.
Analytical Method: Analytical Quality Assurance, Standard for COD/Chloride
Preparation of a standard solution for COD/chloride
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.
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.
Calculating Your Working Tolerance: A Guideline
Guideline to calculate your working tolerance - Certified Standard Solutions (CRM)
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
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.
Nitrate Levels in Vegetables
Reflectometric nitrate determination in vegetables using Griess reagent and Reflectoquant® system.
Comprehensive Quality Assurance and Process Control
Optimize measurement reliability with advanced analytical quality assurance and process control using Spectroquant®, MQuant®, TraceCERT®, and more.
Determination of Protein by Bicinchoninic Acid Assay
BCA protein assay or Smith assay to determine protein concentration in a sample using Spectroquant® Prove photometers.
Determination of Bromate in Water and Drinking Water
Photometric assessment of bromate in drinking water samples using Spectroquant® photometer and test kits, along with 3,3'-dimethylnaphthidine and potassium iodide.
Nitrate Detection in Wastewater
Reflectometric determination of nitrate in wastewater using Griess reagent and Reflectoquant® test strips.
pH of Milk and Milk Products
Learn how to accurately measure the pH of milk and dairy products using MQuant® pH test strips and the StripScan app for quality control.