These inks are specially formulated in order to write virtually on any surfaces and to be easily erased once dried.
They can be used into normal conditions in a range between +5°C and +35°C.
Because of their peculiar formulation they need a valve system writing instrument.
During pen assembly maintain the product under constant and smooth steering (possibly using a marine propeller mixer).
Please inform the end client Via Labelling on Marker Pens - Shake well before use. - If already started please write for a short time on separate sheet in order to permit the pigment particles to pass through the tip again. - Replace the Cap after use - please understand that this environmentally friendly ink will take a little longer to dry than the normal chemical solvent based inks.