by maheshbhuva | Jun 23, 2024 | ppm
Parts per million (ppm) is a way of expressing very dilute concentrations of substances. To calculate ppm, you can use the following formulas depending on what information you have. Practical Notes For dilute aqueous solutions, 1 ppm is roughly equal to...
by maheshbhuva | May 4, 2024 | Hplc, Hplc column, Quality control (QC)
Theoretical Plates chromatography In chromatography, theoretical plates are a fundamental concept used to assess the separation efficiency of a chromatographic column. They play a crucial role in determining the quality and effectiveness of the chromatographic...
by maheshbhuva | Nov 3, 2023 | 21 CFR, Uncategorized
21 CFR stands for Title 21 of the Code of Federal Regulations. It is a set of regulations issued by the United States Food and Drug Administration (FDA) that covers various aspects of regulatory requirements for pharmaceuticals, medical devices, food, cosmetics, and...
by maheshbhuva | Jul 28, 2023 | 621 USP CHAPTER, Analytical Chemistry, Hplc
What is update change Definitions Here Definitions and chromatograms both unified and give title Definitions Give method dwell volume determine being added Definitions add definitions size-exclusion chromatography  (Distribution constant, Retention time of an...
by maheshbhuva | Jul 25, 2023 | Glassware
The terms “Class A” and “Class B” are commonly used to describe different types of glassware in laboratory settings, particularly for volumetric measuring. These classes have specific standards and tolerances, and they serve different purposes....
