Due to the different manufacturing processes for powder free gloves, they are not 100% completely powder free. The definition of powder according to the ASTM is anything that does not pass through a 2.7 micrometer glass microfiber filter by using suction filtration.
These may include cornstarch, calcium carbonate aggregates, latex particles, synthetic debris, packaging fibers, non-soluble lubricants, dust, etc. Currently, Adenna manufactures all powder free exam gloves at a maximum powder limit of 2 mg per glove.