Horizontal laminar flow cabinet Heraeus HERAguard HPH12. HERAguard clean countertops are ideal for use with harmless substances and in laboratory applications where product sterility is required. The workspace can be divided into several zones, a work zone and a storage zone. The cabins are ergonomically designed and equipped with an easy to use control panel. The pre-filter can be replaced by the user without tools or assistance, and can be replaced between scheduled maintenance visits. The HEPA filter is replaced by the front; there is no need to disassemble or remove the equipment from the wall.