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See typical weather patterns across North America
1 watch glass (4" dia
• Range: 1000 yards
Zinc metal
We know what happens in our own backyards at these times during the year
Chromatography (DVD) flasks See typical weather patterns acrossIn Chromatography, viewers learn a valuable technique for the rapid separation of chemical mixtures. After the scientific principles of paper chromatography are conveyed through real life demonstrations and clear graphics, students move into the lab to analyze a number of ink samples, calculating Rf values for the pigments found in each sample. Students investigate the experimental techniques used to determine if two samples are identical by creating
US$ 849.50
US$ 224.50
US$ 3449.00
