Week 4: The Spectra of Conjugated Dyes and Investigation of Beer's Law Overview Getting Started Techniques Procedure FAQ Full Lab Manual Introduction & Goals Chemistry & Background Key Questions Prelab Problems Safety Procedure In Your Write-up Experiments Index ChemLab Home		Eye Protection Goggles must be worn at all times in the laboratory. Chemical Exposure The solid forms of Dye A and Dye B are irritants and toxic. The solutions used have extremely low concentrations, but it is prudent to wear gloves when handling them. The food dye solutions and drinks contain dyes in concentrations approved by the FDA for human consumption. None of the drinks used in the experiment should be consumed, due to the possibility of contamination from lab glassware. Wash your hands before leaving the lab. Waste Disposal Solutions of Dye A and Dye B should be disposed of in the labeled waste drums. Solutions of food dyes and drink mix can be flushed down the drain.
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