ChemScience Inc

Accuracy as the Foundation of Pharmaceutical Testing The quality control of pharmaceuticals relies on analytical measurements that are accurate, precise, reproducible and fit to their use. Whether the laboratory is identifying assay or potency, assessing impurities, performing stability testing or assessing raw materials, the outcome of analysis is not only reliant upon the tool and validated procedure, but also upon the preparation of solutions prior to measurement. Routine preparation of reference standard solutions, sample solutions, calibration solutions, intermediate dilutions and reagents are done in pharmaceutical laboratories. In both instances, the solution volume can be directly affected by the amount of material, and hence the concentration calculated. A mistake in weighing, in transfer or in adjusting volume may thus be included in the analytical result. Volumetric Flasks are intended to be used in the preparation of solutions of a certain volume under specific calibration...

Trustworthy environmental water analysis does not rely solely on advanced equipment . The whole analytical process, which includes representative sampling, and progresses through sample preservation, preparation, measurement, quality control and data review affects the quality of the final result. Water sources can be rivers and lakes, groundwater, drinking-water sources, wastewater, industrial discharges and long-term environmental monitoring programmes. Depending on the purpose of the investigation, laboratories may determine nutrients, metals, organic compounds and other chemical or physical parameters. In this workflow, Volumetric Flasks support the preparation of solutions to defined volumes for use in quantitative analysis. One-mark volumetric flasks are designed with a known nominal volume, and can be used especially where laboratories require to prepare standards, reagents, intermediate solutions or dilutions to a known volume. The ISO 1042 strictly deals with one-mark volumet...