Back قلم لبدي Arabic Marker Azerbaijani Retolador Catalan Popisovač Czech Pin ffelt Welsh Filzstift German Μαρκαδόρος Greek Feltokrajono Esperanto Rotulador Spanish Viltpliiats Estonian
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A marker pen, fine liner, marking pen, felt-tip pen, felt pen, flow marker, sign pen (in South Korea), vivid (in New Zealand), flomaster (in Russia), texta (in Australia), sketch pen (in South Asia), koki (in South Africa) or simply marker is a pen which has its own ink source and a tip made of porous, pressed fibers such as felt.[1] A marker pen consists of a container (glass, aluminum or plastic) and a core of an absorbent material that holds the ink. The upper part of the marker contains the nib that was made in earlier times of a hard felt material, and a cap to prevent the marker from drying out.
Until the early 1990s, the most common solvents that were used for the ink in permanent markers were toluene and xylene. These two substances are both harmful[2][3] and characterized by a very strong smell. Today, the ink is usually made on the basis of alcohols (e.g. 1-Propanol, 1-butanol, diacetone alcohol and cresols).
Markers may be waterproof, dry-erase, wet-erase (e.g. transparency markers), or permanent.
- ^ www.sbctc.edu (adapted). "Module 6: Media for 2-D Art" (PDF). Saylor.org. Archived (PDF) from the original on 7 September 2012. Retrieved 2 April 2012.
- ^ "Toluene | Medical Management Guidelines | Toxic Substance Portal | ATSDR". wwwn.cdc.gov.
- ^ "Healthfully". Healthfully.