The NIOSH approved Drager PSS 3000 is ideal for use in both industrial and mining applications. The fire-retardant ethylene-vinyl acetate harness is five times more durable and 18 times less permeable to liquids than traditional materials and is nearly 100% inert to chemicals. This makes cleaning quick and easy to get your SCBA back up and running. The PSS™ 3000 also offers simple disassembly and reassembly to reduce time and effort required to maintain the unit. The durability of this unit means fewer parts will need to be replaced, and the lack of electronics means no replacing batteries and reduce risks of failure, giving you an optimal cost of ownership. DRÄGER PSS™ 3000.