According to the manufacturer, Sharpie permanent markers are designed to write practically everywhere, however the ink does not tend to stick or last long on non-porous surfaces, like ceramics.
Non-porous surfaces are those which do not allow liquid or air to pass through them. These surfaces also include glass, plastics, metals, and varnished woods.
A "cleanroom" is a controlled environment area (CEA) typically used for manufacturing items that require a low level of environmental pollutants.
Airborne particles are also controlled within a cleanroom!
Sharpie products, such as the Ultra Fine Tip Retractable Permanent Marker, are produced in a cleanroom, making their products cleanroom certified!
A vinyl art eraser is ideal for use with delicate paper projects such as tracing paper and/or drafting film as vinyl is non abrasive material and will minimize damage as well as streak marks.
Quality writing supplies & instruments are available at bulk price at On Time Supplies, including dry erase markers in bulk. Pens, pencils, markers and highlighters are essential school & office supplies, so save time and money and buy in bulk. On Time Supplies also carries correction supplies, including manual and typewriter correction tape, to cover all your writing and correction needs. If you need more information on the writing, drawing & correction supplies featured at On Time Supplies, or on GSA pricing, call us toll free at 1-866-501-6055. We're happy to answer any writing and correction supply questions.