42W UVC Tube FOR UV Cleaner
Multiple recent studies of health effects from Far UV-C exposures of the eye and skin indicate that the wavelengths below about 230 nm are substantially safer than longer UV-C wavelengths. 54-65 These experimental observations are consistent with biophysical considerations regarding the much shorter penetration depth of Far UV-C radiation as compared with longer wavelength UV-C radiation.
Description
Safety Aspects of Human Exposure to Far UV-C Radiation
Multiple recent studies of health effects from Far UV-C exposures of the eye and skin indicate that the wavelengths below about 230 nm are substantially safer than longer UV-C wavelengths. 54-65 These experimental observations are consistent with biophysical considerations regarding the much shorter penetration depth of Far UV-C radiation as compared with longer wavelength UV-C radiation. The biophysical background here is that UV-C radiation at wavelengths less than about 230 nm is strongly absorbed by all proteins (particularly through the peptide bond) and by other biomolecules, 55, 66, 67 and so its ability to penetrate living tissue is quite limited. This phenomenon is quantified by wavelengthdependent measurements shown in Figure 10 (see also information in Figure 3). These considerations and experimental results have led to proposals to modify safety guidelines for human exposure in the Far UVC spectral region, including for whole-room exposure in occupied settings (see below). 68-70
21000100 Steril-Aire Equivalent Replacement | ||
 | Model NO. | GHO410T5L |
Overall Length | 410MM | |
Watt | 42W | |
Diameter | 15MM | |
Ultraviolet intensity at 1 meter | 120uw/cm2 | |
13W | ||
Current | 800mA | |
Liftime | 9000 hrs | |
This lamp is an equivalent replacement lamp for the following:
Brand | Model |
Steril-Aire | 21000100, GTS16VO |
Ultravation | LP-PP-0056SA |
What is UV lighting?
Ultraviolet light (UV) is a type of naturally present electromagnetic radiation that is in sunlight and actually makes up approximately 10% of the total light generated by the sun. UV light is electromagnetic energy with wavelengths shorter than visible light but longer than x-rays (see image below).
The wavelength of this light ranges from 10nm to 400nm and is classified into three sub-bands; UV-A (near), UV-B (middle), and UV-C (far).
UV light with wavelengths less than 290nm are considered to have “germicidal” properties (more on this below). Earth’s atmosphere absorbs ultramagnetic radiation with wavelengths less than 290nm, meaning that most of the UV-C and UV-B generated by the sun is blocked by our planet’s ozone.
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