At the DHI test facilities in Denmark, Organic Load Tests showed that the 'Manta' filter exceeded IMO standards by a factor of 22 without any reduction in the flow rate. Furthermore, the DHI measurements indicated the removal efficiency to be an impressive 99.96 percent of all organisms over 50 microns. The Manta is also type approved by Bureau Veritas Group (Marine).

To meet the needs of UV secondary treatment, the Wärtsilä Aquarius UV system utilises a 'Manta' filter with a 25 micron smartweave screen. The non-pleated screen prevents sediment from becoming trapped, and there is no cake build-up across the screen. Thus, each cleaning cycle brings the screen back to 100 percent cleanliness.