Bulb Test 4

Brand: T-Rex
Model: Active UVHeat
Price: $43.95 + S & H
Wattage: 100 watt flood
Type of bulb: mercury vapor
Special equipment: porcelain or ceramic socket rated at 250 watts or higher
Manufacturer recommended replacement: yearly
Manufacturer recommended distance from bulb: 6 inches (minimum) up to 6 feet

I have noticed that testing mercury vapor bulbs are much difficult than testing flourescent bulbs like the Reptisun 5.0. The intensity of the UVB can vary greatly just by moving the UVB meter a few centimeters in any direction. For testing purposes, I will be taking readings from directly below the center of the bulb. This bulb was brand new on October 2, 2003.
Bulb Test 4
Distance from bulb:
3"
6"
9"
12"
15"
18"
Irradiance (measured in uW/cm2)
10-2-03 - New
44
41
27
16
16
6
3 months
20
13
8
5
4
2
4 months
19
12
7
4
3
2
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