Catalog number: DR88SFT4(M) Features: ●Comes with a voice transmitter, so conversation is clear even with the mask on. ●Fit check (check for adhesion) using the negative pressure method can be done with the palm of your hand. ●Twist type, just twist 60 degrees to the right to attach the filter. Applications: ●For nanomaterials. ●For protection against indium compounds. Specifications: ●Size: M ●Height (mm): 125 ●Width (mm): 130 ●Particle collection efficiency (%): 99.99 or more ●Intake resistance (Pa): 110 or less ●Exhaust resistance (Pa): 60 or less ●Compatible filter material: T4 ●National inspection category RL3 approved product (type inspection approval number TM412) ●Designated protection factor: 10
