Low pressure mercury lamps (NK types)

Type

Wavelengths
(nm)

Arc length
(mm)

Wattage
(W)

Radiation flux
(mW)

Radiance
(mW/cm² sr)

NK 2/1

253.7

10

2

200

6,5

NK 4/1

253.7/ 185*

10

3,5

500

15

NK 4/4

253.7/ 185*

10

3,5

500

15

NK 6/12

253.7

65

6

800

15

Medium pressure mercury lamps (ST and Q types)

Type

Wavelengths    
(nm)

Arc length (mm)

Wattage (W)

Luminous intensity (cd)

Luminance (cd/cm²)

Q 25 A

lines between
250 nm and 580 nm

5

25

89

1020

St30

lines between
250 nm and 580 nm

18

30

20

51

St40/1

lines between
250 nm and 580 nm

25

40

50

260

St41

lines between
250 nm and 580 nm

11,5

45

125

500

St43/1-A

lines between
250 nm and 580 nm

25

35

2

56

St46

lines between
250 nm and 580 nm

11,5

33

95

380

St49/1

lines between
250 nm and 580 nm

25

35