Elemental Analysis

The most common form of elemental analysis, CHN analysis, is accomplished by combustion analysis. In this technique, a sample is burned in an excess of oxygen, and various traps collect the combustion products — carbon dioxide, water, and nitric oxide. The weights of these combustion products can be used to calculate the composition of the unknown sample.

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203068 Chromium(III) oxide powder, 99.9% trace metals basis
80656 Sodium polytungstate solution ~85% in H2O, for separation of minerals
84727 Sulfuric acid for the determination of nitrogen, ≥97.5%
14211 Water ACS reagent, for ultratrace analysis