The incentive in developing the primotec  phaser, a pulsed micro arc welding unit was to make dental welding accessible to a wide community of users..

Consequently the primotec phaser in suited for all types of dental welding jobs, no matter if it is for new restorations or for repairs.

The range of application equals at least that of a laser welding unit. Inert gas channeled from the hand piece direct to the welding joint during “phasing” keeps the resulting welding points and seams clean and oxide-free.

Unlike soldering, the welding zone of the primotec phaser affected by heat is so small, that welding can easily be carried out closed to veneers or acrylic saddles. For example, it is possible to weld fixed-removable dentures without disassembling the restoration .As there is no problematic solder involved, multiple materials and associated problems such as difference of potential, corrosion, as well as resulting health hazards for the patient, are avoided right from the start. The best possible biocompatibility is guaranteed

Since introducing  the first primotec phaser  pulsed micro are welding unit ,the mx 1 in 2003,the need developed for lower cost variations on the one hand, and  for more convenience and power reserve on the other.
 Introducing the phaser  ec-1 reduced to essentials, and the phaser as-1 the high end phaser, accommodated this demands.