Concentration of dust in granular materials is an important indicator of potential emission factors from the material. In this unique test, we offer fractional analysis of dust and its component in five size segments: PM100 (inhalable fraction), PM10 (thoracic fraction), PM4 (respirable fraction), PM2.5 and PM1.0
The test can be used to evaluate potential emission factors for almost any industrial dust or product as long as it water-insoluble with a specific gravity of less than 1: soil, sand, recycled concrete, construction dust or sawdust. The test is based on ASTM method D7928: “Standard Test Method for Particle-Size Distribution (Gradation) of Fine-Grained Soils Using the Sedimentation (Hydrometer) Analysis”, where the material is suspended in a water-based solution and the concentration of small particles is measured. For the purpose of this project, we use a much more sensitive gravimetric analysis instead of the hydrometer, this is why we quote the “method with modification”.
Typically we require 1 kg of sample for the analysis, which should be delivered in a metal or plastic container.
In our test, various fractions in the range from 1 to 100 microns are extracted from the sample, accurately measured with a sensitivity of 10 mg/kg, and reported back to you per weight of your sample. If necessary, the extracted dust can be further analyzed for quartz, asbestos, glass wool, lead, metals, PAH’s, and other potentially harmful ingredients. Please contact us at LCS Laboratory to discuss your project or request a free, no-obligation quote.
