How Effective Is Your Sunscreen?

Each student needs:

• UV Radiation Designed Experiment Lab Handout (PDF)CopyrightCopyright 2014 Denise W. Carlson, ITL Program, College of Engineering, University of Colorado Boulder

To share with the entire class:

• sunscreen SPF 15
• sunscreen SPF 45
• sunblock
• sunscreen containing zinc oxide nanoparticles
• sunglasses, either ask groups that want to use sunglasses in their designed experiments to bring in sunglasses from home, or else purchase some inexpensive ones, such as https://www.qualitylogoproducts.com/tradeshow-promotions/sunglases.htm?variant=BLANK&imageID=262438&gclid=CNWLrKGq68ACFQiIaQodikAAoA
• UV sensitive beads, such as a package of 240 ultraviolet-detecting beads from Flinn Scientific at https://www.flinnsci.com/ultraviolet-detecting-beads/fb1147/
• UV intensity meter and lens tester card, at https://www.flinnsci.com/uv-intensity-meter-and-lens-tester/ap6412/
• plastic bags
• plastic wrap
• UV lamp, such as https://www.flinnsci.com/ultraviolet-lamp-hand-held/ap1901/ 
• Vernier UVA sensor, such as https://www.vernier.com/products/sensors/uv-sensors/uva-bta/
• Vernier UVB sensors, such as https://www.vernier.com/products/sensors/uv-sensors/uvb-bta/ 
• access to the outdoors