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Ordering From Sigma-Aldrich Sigma-Aldrich is a major chemical supplier offering the largest available selection of chemicals. We have ordered from Sigma-Aldrich in the past and found their sales representatives to be courteous, extremely knowledgeable, and very helpful in finding the most appropriate materials for a particular project. Here are some tips we would like to pass along to you: Sigma-Aldrich only sells to institutions, so here are some tips on placing orders: … Read more
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Abstract Thin-layer chromatography (TLC) is a widely used method for qualitative analysis to determine the number of components in a mixture, to determine the identity of two substances, or to monitor the progress of a reaction. The more accurate high-performance TLC (HPTLC) is better suited for quantitative analysis. Unfortunately, HPTLC requires expensive equipment that most high schools and colleges cannot afford. If digital photography is combined with regular TLC, it can perform highly… Read more
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You might have read or heard the phrase big data used on the internet or in a television commercial. But what is big data? How is it defined, and how is it different from "regular" data? Can you use it for a science project? This reference page will help answer some of these questions and get you started exploring the world of big data. Data is information, and there are many different types of information. If you have done a science project before, you probably collected information by… Read more
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Free science fair projects.