The VCT 121 test system is designed for tests on vacuum cleaners (vac) for household or small business use according to the standard EN 60312.
For emission tests the suction air is prepared with a dust concentration of 550 mg/m³ and passed directly into the hose of the vac.
For dust retaining tests the suction air is prepared with a dust concentration of 100 mg/m³ in the inlet channel (mixing tube) described in the standard.