Determining Turbidity of an aqueous solution is a frequently used procedure to estimate the quality of water, or even concentration of suspended particles such as cells, bacteria and mud.Turbidity can be defined as a decreased in the transparency of a solution due to the presence of suspended and some dissolved substances, which causes incident light […]
Tag Archives: Handheld spectrophotometers
The objective of this application note is to demonstrate how Photopette Cell can be used to measure cell-viability of eukaryotic cells using a Resazurin Assay. Furthermore, it acts as a handy guide to get you started with Photopette Cell, and outlines application-specific parameters for reference. Cell-viability assays are important cell-based assays to determine whether cells […]
During anaerobic glycolysis, energy is produced. In this process, lactate dehydrogenase (LDH) catalyses the oxidation of lactate to pyruvate and an equimolar amount of nicotinamide adenine dinucleotide (NAD+) is reduced to its reduced form NADH. The amount of NADH produced is directly proportional to the lactate concentration in the sample [1]. The produced NADH is […]
Download PDF version of this article here Measuring Protein Concentration Directly using Photopette® Bio Photopette® enables fast protein measurements directly at the bench.Protein samples can be directly measured at 280 nm without sample preparation and sample transfer. Objective: The objective of this application note is to demonstrate how the Photopette® Bio device can directly measure […]