PURUS Cleanroom Poly Paper is manufactured with proprietary binding technology that results in low particules and created for low particle shed. PURUS Cleanroom Paper comes in a variey of colors and is suitable for use in ISO 4 to 6 (Class 10 to Class 1000) cleanrooms. Produced in and ISO 4 (Class 10) cleanroom, this cleanroom paper provides excellent printability and heat toner adhesion. With high opacity and durability, PURUS cleanroom paper is also recyclable.