Quality control.

All heaters are tested under hard quality check points that are certified by an independent company.
In compliance with ISO 9001:2015.
Guidelines, we submit our heaters to the following tests:

Diameter. Length.
Volts. Watts.
Termination. Tails length.
Leakage current (cold) =0.1ma at 242V.
Isolation (cold) = 5mmΩ at 500V
Dielectric strength 1500v 1/seg.
Length tolerance +/- 1.5% (min 1 mm)
Diameter tolerance -0.02 to -0.06 mm
Connection tolerance +/-15mm
Power tolerance (w) +5%/-10%
Cold zone depending length and diameter.