Ideal for absorbing spills of solvents and deionized water in the cleanroom. Also for general surface and equipment cleaning. Nonwoven wipers are made from a polyester/cellulose blend of superior strength and absorbency, with low levels of ions and organic extractables. Made without binders or surfactants, resulting in a pure wiper. Suitable for ISO Class 5 (FED-STD-209E Class 100/M3.5) environments. Specifications for Berkshire Durx 670 Wipers, Berkshire DR6700909.20 : | | Dimensions, cm (in.): |  | 22.9 x 22.9 (9 x 9) |  | | Berkshire No.: |  | DR6700909.20 |  | | Unit: |  | Pack of 300 |  | | Particle Generation (>=0.5 µm), Biaxial Shake: |  | 20 x 10³/cm² |  | | Particle Generation (>=0.5 µm), Fibers (>=100 µm): |  | 100/cm² |  | | Extractables, Using Deionized Water: |  | 0.089% |  | | Extractables, Using Isopropyl Alcohol: |  | 0.043% |  | | Ions, Sodium: |  | 12 ppm |  | | Ions, Potassium: |  | 2 ppm |  | | Ions, Calcium: |  | 7.6 ppm |  | | Ions, Magnesium: |  | 4.3 ppm |  | | Ions, Absorbency: |  | 298 mL/m², 4.3 mL/g |  | | Ions, Time to Half-sorption: |  | 3 sec. |  | | Ions, Basis Weight: |  | 69.3 g/m² |  | |