Every single needle is checked by a dedicated technical specialist before approving it to the assembly room. Our cartridges are assembled in a specially built Cleanroom with ISO-8 air-purification standards. After assembly, the product is double checked to have been EO sterilized and that individual blister-packages are intact before shipping.
To pass quality control, every grip is checked for compatibility with the T-Tech needle cartridges.
As for the drive bars, the diameter of the ball-point as well as the length of the bar are measured to ensure consistency.