Test inks can provide information about the adhesive strength of printing inks, paints and adhesives on all surfaces such as plastic, metal and glass and about the degree of cleanliness in mN/m (dyne/cm). PINK test inks are test liquids with a defined surface tension that are coloured pink. They were developed to offer non-toxic test inks. These PINK test inks can be used as a replacement for the BLUE test inks, as the application and handling is based on DIN 53364 or ISO 8296. Result: If the edges of the brush, cotton swab or pen application contract within 2 or 4 seconds (depending on the ink specification), repeat the measurement with the next lowest value. If the edges run outwards, repeat the measurement with the next highest value. The surface tension is reached when the line has just stopped for 2 seconds or 4 seconds (depending on the ink specification). Shelf life 1 year unopened, 6 months after opening. Individual components of the test inks evaporate to varying degrees. Close bottles and pens tightly after use. Test Inks arcotest ® pink, 28 mN/m Observation time: 22-26; 45-60 mN/m: 2 s 28-44 mN/m: 4 s Accuracy: ±0,5 mN/m