Zoo Med Iguana Light 5.0 Fluorescent UVB lamp

Iguana Light 5.0 Fluorescent UVB lamp
Iguana Light 5.0 UVB  Contains the highest amounts of both UVB and UVA wavelengths (according to an independent laboratory spectral analysis.) The UVB wavelength helps to prevent or reverse Metabolic Bone Disease in green iguanas as well as other species of lizards in captivity. Strengthens and improves shell growth on all captive turtles and tortoises. UVA wavelength increases appetite, physical activity, helps to induce reproductive behaviors and is beneficial to the psychological well-being of captive reptiles and amphibians. Safer than adding powdered or liquid synthetic D3 supplements, as the UVB wavelength allows all reptiles the ability to regulate their own Vitamin D3 levels by endogenous synthesis as they would in nature! Eliminates the risk of vitamin D3 overdose (highly toxic) from synthetic sources. Wavelength penetrates a full 10-12″ from the bulb’s surface. We use pure quartz glass sleeves. The bulb’s UVA/UVB wavelength remains effective for 1 to 1-1/2 years. (Replace bulbs yearly).
Fluorescent Test Results…The Results Are In!!!Tests at the Boston University School of Medicine show that Zoo Med’s Reptisun 5.0 UVB and Iguana Light 5.0 UVB bulbs induce 7-DHC conversion to Previtamin D3 at a rate 23 times greater than the next leading UVB reptile bulb!
Vitamin D is formed in a two-step process. The first is an isomerization of 7-dehydrocholesterol (7-DHC) to previtamin D3 (preD3) which is catalyzed by ultraviolet B (UVB) radiation. Ampouled samples of 7-DHC in hexane solution were exposed to radiation produced by the test lamps at six inches for 15 minutes on ice. The samples were then analyzed by high performance liquid chromatography to determine the percent of 7-DHC converted to preD3.
Of the [six] sample bulbs tested, the Zoo Med Laboratories (San Luis Obispo, California) Reptisun 5.0 and  Iguana Light 5.0 demonstrated a strong capacity to induce 7-DHC conversion to preD3… . Figure 1 diagrammatically represents the results of these analyses.   -David M. Jackson, Ph.D.