These are very clean spores with very little contamination. The mushroom caps never touched the steril spore collecting surface. The mushroom caps were suspended above a steril culture plate in aseptic conditions to yield very clean spore prints. The culure plates are then sealed in a vacuum pack bag, but are not vacuum packed. There is such an abundance of spores that sections will dislodge and move around freely inside the steril culture plate space. Spores collected March 2025.