Discuss interpretation of the gel with your instructor. Keep the photograph in your data book. Transilluminators emit ultraviolet light in the 250 nm range. This range of light is mutagenic.
Eyes are sensitive to UV light.
Short term exposure will lead to sunburn. Long term exposure can cause cataracts. UV light can also cause skin cancers. Protect your eyes and skin from UV exposure Place gel on transilluminator Place small piece of news print on top of gel at the edge to aid focusing Slide the viewing screen to the right. Do not handle this filter.