Page 5 - Stained With Suspicion Blood Detection

Teacher’s

Notes

hese notes are provided to assist in the
preparation and execution of the laboratory OTHER SUPPLIES AND
Texperiment. A solutions key for the preand EQUIPMENT REQUIRED
post-lab questions can be found on pages 11 and 12,
respectively.  Rulers

 Lab gloves
SUPPLIES  Distilled water

First, inventory the supplies included in the  Camera (optional)
lab kit. Supplies have been provided for up to
six groups of students.  Tweezers (optional)

 Hydrogen peroxide (6 bottles)
 Phenolphthalein solution (6 bottles) RUNNING THE LAB

 Cotton swabs (6 sets) During Lab 1, remind students that the reaction
should be observed within three minutes, or they
 Positive control and testing cards (6 sets) will have to repeat the experiment. Teachers should

 Carpet samples from the crime scene (6 sets) also prepare several common household items for
testing (See Notes.)

THE MYSTERY OF LYLE AND LOUISE 5