Discontinuous particle monitoring for GMP cleanroom classes B, C and D is usually carried out sporadically and is a very labor-intensive and time-consuming activity that quickly results in several hundred measurements per month and a correspondingly large amount of working time. For many cleanroom operators, the operational processes have been carried out in the same, unchanged way for decades: Measurements are taken, data is transferred to Access databases, for example, and annotated and visualized using Excel. The required data integrity is achieved by the particle counter-integrated print function of the measurement results on thermal paper. As the legibility of information on thermal paper has a limited shelf life, all measurement logs must be affixed, labeled, copied and archived. In order to obtain a higher level of informative value or for the creation of reports, some figures are transferred manually or average values are calculated by employees themselves. Possible transmission and calculation errors pose a risk here. If mobile particle counters from different manufacturers are in use, the overall situation becomes even more complicated and the workload and risk potential increase. eurogard offers its customers from sectors such as pharmaceutical, medical, biotechnology, semiconductor and nuclear technology a solution with the Moni.NET Class C tool, with which the processes outlined can be optimized in terms of time, quality, costs and sustainability.