Laboratory Spectrophotometer Articles & Analysis
5 articles found
Spectrophotometer (also known as a UV-Vis Spectrometer) The term spectrophotometer can refer to quite a variety of instruments that measure light, with the exact definition depending on the area of science or industry. ...
History of ASTM International The American Society for Testing and Materials (ASTM) is an organization that currently provides over 12,500 international standards. Its roots date back to 1898, when ASTM was formed by a group of scientists and engineers to address the frequent rail breaks affecting the fast-growing railroad industry. The group developed a standard for the steel used to fabricate ...
Nitrogen is naturally found in groundwater and surface water in the form of nitrate, nitrite, or ammonium. The EPA has established a maximum contaminant level of nitrate-nitrogen in potable water of 10ppm. This application presents results of UV-Vis analysis of nitrate concentrations in drinking water, ground water, and industrial wastewater, showing that the manual colorimetric method is ...
Spectrophotometers are relied on by a wide range of laboratories, for tests ranging from specific parameters, like chlorine or metals concentrations, right through to complex analyses of reaction kinetics. ...
This calibration method is a wet chemistry method requiring a spectrophotometer, chemicals and laboratory glassware. It can be done by skilled personnel only. ...