Samples may be prepared by passing the material through an 18 mesh sieve. If you are analyzing the sample on a dry basis, dry the sample in an oven at 85 C for approximately 2 hours (105 C for soils).

The LECO CNS-2000 analyzes sample weights up to 2 grams for simultaneously for carbon, nitrogen and sulphur. Applications include heterogeneous samples like soils, plants, sediments, and industrial wastes.