Answer by
John13 (186)
One way to calculate mold count is with a device called a Volumetric Spore Trap. As the trap takes in air, mold spores, along with pollen and other particles, are trapped on an adhesive-covered slide. After a set period, usually 24 hours, a lab tech examines the slide under a microscope, counts the mold spores and caluculates airborne mold concentration.