Isofield™ Zetta 230 Non-Sterile TieOon Cleanroom Facemask - ISO Class 4/5 Compatible
The Zetta is ISO Class 4 compatible. The Zetta is also made from low-linting cleanroom grade material to ensure best in class cleanliness. The individually packed Zetta has excellent bacterial and particle filtration efficiency, and an excellent choice for GMP Grade C/D environments.