22 to 60 mN/m
6 pens of your choise
with accuracy: +/- 1.0 mN/m
observation time:
22 to 26 mN/m : 2 sec.
28 to 44 mN/m : 4 sec.
45 to 60 mN/m : 2 sec.
Content single pen: 5 ml
Recommendation: arcotest® test pens should not be used on contaminated metal surfaces or to check for the absence of grease. There could be residual dirt on the surface, which remains on the felt of the pens and falsifies subsequent values.