Cleanroom Sharpie Markers with IPA-resistant permanent ink will mark on wet or abrasive surfaces. This cleanroom sharpie marker has a break-resistant clip and durable tip to help provide one of the most durable cleanroom markers on the market. They are clean-processed and packaged for use in ISO4/5 Class 10-100+ cleanroom environments. The anti-roll barrel shape, ribbed grip area, and lanyard loop allows for more confidence in not contaminating the pen from a dropped cap or marker. These cleanroom IPA-resistant markers are manufactured with a chisel tip and come double-cleanroom-bagged for safe entry into your cleanroom. They are available individually wrapped upon, request, with the option below in the product choices.