What Factors Affect the Intensity of Color?
Megan Miller, Abdullah Alturki, Meghan Nepomuceno, Jake Johnston
Chemistry 113 Laboratory, Group 4
Instructor: Carutha Senaratne
March 16, 2016

Introduction:
A company need for group of student to determine the factors that involve the intensity of color. The company has specific background and special information about these factors as they relate to their food coloring products and that company sent to the group three samples of their food products to explore using spectroscopy as your technique for analysis. A variety of factors can affect the calculations intensity of the color of a result. In this investigation you will explore some of these factors.
Materials
In order to test the intensity of light, there are several different materials needed. Those materials are as follows; colorimeter probe (spectrophotometer), red food color solution, blue food color solution, green food color solution, deionized water, test tubes and rack, pipet, and a timer.
Procedures: Part 1
The first part in the experiment is to pour each colored solution into a vial, then calibrate the spectrophotometer. The calibration steps are to set it on the 430nm wavelength, and to place a vial of de-ionized water inside, then press the calibration button and letting it calibrate for 10 seconds. The spectrophotometer should show a percent transmittance of 100% since it is pure water being tested. Calibration is needed before every test is completed. After the spectrophotometer is calibrated, place the vial containing the red food color solution into the machine with the ridged sides pointing to the left and right, then close the lid. Press the start button and let the data collect for about 30 seconds, then press the stop button. Once the test is completed, collect and record the data. Calibrate the spectrophotometer again with the