A.)Open main valve and evacuate unit to 1-2mm (Torr). Close main valve.

B.)Switch on bombarder and increase to 250mA. Hold at this setting while maintaining pressure between 2 and 3mm (Torr) with main valve.

C.)When the unit is at 75C/170F, increase current to 400mA.

D.)Maintain pressure between 2 and 3mm (Torr) with main valve.

E.)At 120C/250F, increase current to 650mA, reduce pressure to 1.5 Torr.

F.)When the electrodes are completely red and the glass has reached 230C/450F, open the main valve for a few seconds and then switch off the bombarder.

G.)With the main valve open, allow the tube to cool to around 50C/125F with a vacuum gauge reading less than 5 microns.

H.)Fill the unit with gas.

A.)Evacuate unit to the point where you can close main valve and strike an arc in the tube.

B.)Increase current to 250mA and evacuate a small amount with the main valve whenever the tube starts to dim.

C.)When the unit reaches 75C/170F, increase the current to 400mA.

D.)When the unit is at 120C/250F, increase the current to 650mA. Continue to bombard at 650mA making sure the pressure is controlled with the main valve.

E.)When the electrodes are completely red and the glass has reached 230C/450F, open the main valve for a few seconds and then switch off the bombarder.

F.)With the main valve open, allow the tube to be cooled to around 50C/125F with a vacuum reading of less than 5 microns.

G.)Fill the unit with gas.