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ECO ink (without formamide)

The ECO JUMBO pens contain 45 mL of ECO ink.
Their composition has been studied to get the same comportmental effect as the formamide ink.
The ECO JUMBO are designed with reservoir and released valves. These systems allow to use a virgin ink for each application.

Available levels: 28 to 58 dynes (even numbers) and 59 to 71 dynes (odd)
Measure unit: dyne/cm (mN/m)
To avoid inacurracy: temperature to stock between 10 and 25C.
Temperature correction : around 1 dyne / + 10 C (regarding ambient 20°C)

Avoid the contact with eyes, and skin (irritant).

Fore more information:
- about the measure methods

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