Formamide-based Jumbo pencils meet ASTM standards. They are delivered in a box of 6 pencils of 45mL each or individually.
The markers (with reservoir and valve) can be transported without fear, they make it possible to supply the pad with new ink each time it is used.
CategoryMeasuring Surface Tension
- Available: from 38 to 58 dynes (consecutive)
- Unit of measure: dyne/cm (mN/m)
- ASTM standard measurements: 1 cm wide and 7 cm long
- To avoid inaccuracies: storage temperature between 10 ° and 25 ° C.
- Correction depending on excess temperature: approximately -1 dyne / + 10 ° C
- Take care not to pollute the tip of the pencil (spare tips available: contact us)
- Avoid contact with eyes, skin (toxic, dangerous).