Test pens with different tensions of 38, 40, 42, 44, 46, 48, 50, etc. made in the United Kingdom. It can accurately test whether the surface tension of the plastic film reaches the value of the test pen. Make users clearly understand whether the film is suitable for printing .Composite or vacuum aluminum plating. Effectively control quality and reduce tool delays caused by unqualified materials. Features One-time quick-drying display liquid, no need to wait to get results, safe and non-toxic, fully sealed pen case, longer shelf life, no pollution, clearer and easier to observe, refillable and refillable, economical and durable, spring Piston flow channel, fully sealed pen sleeve, long shelf life, free from contamination, the set is 1 pen and 1 bottle of 100 ml tension test liquid. Applications Make the corona pen perpendicular to the plane of the film, apply appropriate pressure, and draw a line on the surface of the film. Dyne pens with a smaller range are easier to draw straight lines, so there is no need for too much pressure; while for Dyne pens 40, 42, 44, you need to add a little more pressure when drawing lines. In general, for the first test to ensure the accuracy of the measurement, 6 dyne pens of different models are required; if it is determined that the number of film surface tension changes very little, at least 3 dyne pens of different models are required. Technical Standard GDRK155A: One-time type DRK155B: rechargeable Product Parameter

Material Name	Temperature (℃)
Polyethylene (PE)	20
Polypropylene (PP)	20
Polyester (PET)	20
Polyvinyl Chloride (PVC)	20
Nylon (PA)	20