Twillx 1622 is a wipe that has been designed for ISO Class 6 (Class 1000) and above cleanroom applications. Twillx 1622 is 100 percent biodegradable. It is made from 100 percent cotton woven in a twill pattern and bias cut to minimize contamination. Twillx 1622 is engineered for tough cleaning applications requiring absorbency, strength and heat resistance. Key Attributes: 100 percent woven cotton. No binders or other additives. Bias cut and tight weave construction. Environmental: Complies with RoHS 2002/05 and Reach requirements. 100 Percent biodegradable. Application includes: Ideal for high temperature equipment cleaning and diffusion furnaces. Absorbent, low linting work surface material. Cleaning, polishing and burnishing of metallic and nonmetallic magnetic media disk surfaces. Cleaning of solvent spills. Compatible with ISO Class 6 (Class 1000) cleanroom applications and above. Basis weight 171 g/sq. m and test method is TAPPI T-410. Caliper 356 micrometer and test method is TAPPI T-411. Fibers >=100 micrometer and test method is IEST-RP.CC004.3, Sec 6.1.3 / Sec 6.2.2. Particles >= 0.5 micrometer and test method is IEST-RP.CC004.3, Sec 6.1.3 / Sec 6.2.1. Sorbency capacity 315 mL/sq. m, efficiency 1.8 mL/g, sorbency rate 8 seconds and test method is IEST-RP.CC004.3, Sec 8.1 modified / Sec 8.2 modified. Non-Volatile Residue DI water 0.10 g/sq. m, IPA 0.14 g/sq. m and test method is IEST-RP.CC004.3, Sec 7.1.2. Ions 52ppm Na+, 0.37ppm K+, 14ppm Ca++, 5.1ppm Mg++, 4.4ppm Cl- and test method is IEST-RP.CC004.3, Sec 7.2.2. Measures 12" length by 12" width.