MC Low Pressure Mercury Vapour

Updated
10-IX-2011
Mercury Vapour lamps operating at low pressure and with discharge tubes of soft glass are classified as the MC style. The vapour pressure is typically just a few hundredths of an atmosphere, these conditions leading to maximum efficacy for the generation of UV-C radiation at 253.7nm. They generally dissipate fewer than 10 watts per centimetre of discharge length.

The MC class of discharge lamp was specifically created to drive fluorescent lamp technology. Because of the great variety of fluorescent lamps, these are classified elsewhere on this site under the section of that name. There do exist however a few specialised low pressure mercury lamps having no fluorescent coating, primarily developed for their ultra-violet output. Such lamps are catalogued under this page.

Glow Discharge

GE

400W

S-1 Ultraviolet Sunlamp, Thermionic discharge
~1950

GE

85W

S-2 Ultraviolet Sunlamp, Thermionic discharge
1939

GE

4W

G4S11 Ozone Producing Thermionic discharge
1959

Thorn

4W

M2 miniature ultraviolet source
1975
       

Positive Column Discharge

Philips

6W

TUV Germicidal lamp with internal resistance
1992

Philips

6W

TW Blacklight lamp with internal resistance
1983

Osram

10W

HNS 10W/U OFR U-Tube Germicidal Ozone Free
1973