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Directions: 1

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Directions: 1. Review the Toxicology Presumptive Tests. Complete and identify the unknowns based on color identification of the presumptive test. You must ID all 8 of the unknowns in this exercise. 2. Complete and identify the unknown based on the mock TLC plate. ALSO: Calculate the Rf value of the unknowns. Remember: the solvent front value should be considered 4.9cm.