Precision Optical uses positive air flow during many phases of the coating deposition process. It is used when cleaning and prepping optics prior to chamber loading. Our inspectors carefully inspect and perform final cleaning of each individual optic in this ISO class 5 environment. In addition, we also have laminar hoods over the front of each chamber, minimizing particulates during the deposition process and preserving the coated surfaces. The end result is exceptional cosmetic coatings and surfaces.