Dot Tubes for Quick Identification Submitted by Mitzi Smith, Walkersville High School, Walkersville, Maryland
My students were having trouble telling the difference between a 20 x 150-mm test tube and an 18 x 150-mm test tube. Using permanent markers, I put a blue dot on the 20s and a red dot on the 18s. Now we can identify them at a glance using the dots. Some dots do wash off after a while and need to be redone, but it’s worth it.
Teachers often ask us "How do I dispose of a Carolina Biological Supply Company product when it is no longer needed?" Unfortunately, there is no single correct answer. Get information to help you determine the most appropriate disposal option for your requirements.
Carolina is your online chemistry solution. We've just updated our Web site with great new features (and savings!), including:
No hazmat fees for orders placed online (WOW!)
Expanded online chemical assortment (over 600)
New lab safety and chemistry-related articles, plus teacher resources
Luminol is a chemical that produces a beautiful blue fluorescence when oxidized by hydrogen peroxide. It is one of the best-known examples of chemiluminescence and a valuable crime scene investigation tool. Learn how you can use it to augment lessons on oxidation-reduction reactions, conservation of energy, and electron energy levels.
Green Fluorescent Protein Pioneers Share 2008 Nobel Prize in Chemistry From the Web site ScienceDaily, October 8, 2008
On the subject of glowing things, here's a story about green fluorescent protein (GFP). GFP is now widely used as a "tagging tool" in bioscience. Uncover more information about this important discovery and why it earned 3 scientists the 2008 Nobel Prize in Chemistry.
Disposing of preserved specimens and preservation fluids after use isn't complicated, but does require some thoughtful planning. Find out how to properly dispose of both these types of waste and whom to contact should you have any questions or need assistance.
Carolina is your online chemistry solution. We've just updated our Web site with great new features (and savings!), including: 
