The pens can be used as a replacement for our BLUE test inks, particularly if a non-toxic ink is specifically desired.
The ink/pens are not produced according to any DIN/ISO standard. However, the application and handling should be the same as the conditions determined in DIN 53364 or ISO 8296
The fact that there may be slight variations compared with testing ink/pens compliant with DIN 53364 or ISO 8296 is known to us depending on the surface to be tested. Different behavior can result from the differences in proportions of polar and dispersed components from those corresponding BLUE pens depending on the interaction with the plastic tested.