TS 11487-2 ISO 9957-2

TS 11487-2 ISO 9957-2 addresses the properties and test conditions for water-based black draughting inks that do not contain carbon black and are used to produce black-lined technical drawings. It ties the ink specification to natural tracing paper and to the drawing context in which consistent line quality matters.

The standard is centered on the product definition itself: a black, water-based drafting ink with no carbon black component. In technical drawing, the practical performance of the ink is closely linked to flow, line sharpness, resistance to feathering and the ability to remain legible on the drawing medium. Those characteristics are especially important when the result must support clear reproduction and long-term document readability.

Ink behaviour in technical drawing practice

In general technical context, draughting inks are formulated for pen-based drawing systems where a stable, even black line is required. Water-based systems behave differently from solvent-based ones in terms of drying, paper interaction and surface spread, so the drawing medium is part of the technical equation. By referencing natural tracing paper conforming to ISO 9961, the standard links the ink to a paper type commonly used for precise technical originals.

What this scope means in practice

• It covers the requirements and test conditions for water-based black draughting inks used in technical drawings.
• The ink is defined as non-carbon-black, which distinguishes it from other black drafting media.
• The intended medium is natural tracing paper conforming to ISO 9961.
• This listing represents a withdrawn Turkish edition based on ISO 9957-2:1995.