Biomass is renewable organic substance that arrives from plants and animals. Biomass is often burned specifically for heat or converted to liquid and gaseous fuels by way of a variety of processes. pure - freed from extraneous features of any type; "pure air and h2o"; "pure gold"; "pure Principal colours"; https://biofuel-pellet-stove99763.blogminds.com/the-greatest-guide-to-biofuel-conditioner-35185227