Improve workplace safety with HMIS stickers that help workers understand the hazards of the chemicals they are handling These Right to Know / SDS labels are handwritable with ballpoint pens and permanent markers like Avery Marks A Lot UltraDuty Markers (handwrite-only and not compatible with laser or inkjet printers) Preprinted based on the HMIS labeling system to quickly reference the chemical's health and physical hazards and also includes checkboxes for personal protective equipment requirements Durable and waterproof labels, these labels are also resistant to chemicals, abrasion, UV rays, tearing and harsh temperatures Tested to remain adhered for 90 days in seawater, these BS5609 Sec. 2 certified labels are built to last