Water Resistance
After immersion in water at room temperature for 72 hours
• No loss of adhesion (Cross Hatch Test EN ISO 2409)
• No softening of the ink film
• No blistering
• No embrittlement
• No colour change
Durst Organic Glass Inks passed the water resistance test.

Hot Water ResistanceAfter immersion in water at 65°C (149°F) for 30 minutes• No loss of adhesion (Cross Hatch Test EN ISO 2409)• No softening of the ink film• No blistering• No embrittlement• No colour changeDurst Organic Glass Ink passed the hot water resistance test

Steam Resistance (ASTM D2247-02)
Exposition to water vapor (up to 45°C/ 100% relative Humidity) for 72 hours
• No loss of adhesion (Cross Hatch Test EN ISO 2409)
• No softening of the ink film
• No blistering
• No embrittlement
• No colour change
Durst Organic Glass Ink passed the steam resistance test

Leach resistance (base or alkaline solution)
2.3% NaOH, 80°C for 30 minutes successfully passed

Acid Resistance10% HCl at room temperature for 24 hours successfully passed

Solvent Resistance
• Ethanol 98% - passed successfully 500 double rub strokes with soft cleaning cloths
• Iso-Propylalcohol 99.9% - passed successfully 500 double rub strokes with soft cleaning cloths
• Acetone 99,5% - passed successfully 500 double rub strokes with soft cleaning cloths

Cleaning agents with 5%
anionic tensides passed successfully 500 double rub strokes with soft cleaning cloths e.g. Glass cleaner Ajax from Colgate, bath/ shower cleaner CIF from Unilever

Lightfastness
Lightfastness according to DIN controlled

Bluewool Test
• Rho Rigid Inks CMYK: Bluewool rating = 8
• Lifetime for 25% colour loss, ink film on face two: > 2 years for outdoor applications and > 10 years for indoor applications