The HZ250 (HZQ250) pneumatic vacuum cleaner is specially designed with a H13 Hepa filter which provides 99.95% filtration this allows this machine to be used to collect Silica Dust & Asbestos. It has been further tailored to industrial and commercial use through the addition of a steel drum, making it far harder wearing than other machines. With it's Compact stainless-steel drum & 8L Capacity it's suitable for use by builders & especially roofing contractors who come across asbestos within their work as they require a light machines to be able to carried to roofing ect .Featuring an all steel HZ power head that incorporates full Twinflo' motor and Nucable technology, it includes all the features of the HZ200 but with the addition of a steel canister improving durability. A pre-filter system that is contained within its own security module provides hazardous filtration and is designed to operate with Hepaflo bags to allow safe emptying of the machine. When maintained and used correctly this vacuum will operate at a 99.95% filter efficiency meeting H13 Hepa Standards and IEC 60 335-2-69 the correct level of filtration for use with most hazardous dust.