Page 5 - Prescription for Crime Drug Testing

Teacher’s

Notes

hese notes are provided to assist in the RUNNING THE LAB
preparation and execution of the laboratory During the white powder test, instruct students
Texperiment. A solutions key for the pre and to label their spatulas with each specific powder
post-lab questions can be found on pages 9 and 10, name. This will allow them to use the spatula to mix
respectively. the powder with the liquids later in the lab while
preventing cross contamination. Also, students
should place a very small amount of the white
powder in each well, then add three or four drops of
SUPPLIES liquid and mix.
First, inventory the supplies included in the
lab kit. Supplies have been provided for up to
six groups of students. SAFETY PRECAUTIONS

 Isopropyl alcohol (6 bottles) 1. During cleanup, place all well plates and

 Lugol’s iodine (6 bottles) spatulas in a plastic garbage bag and tie the top
for immediate disposal.
 Strip of unknown powder (1 strip)
 Strips of known powders (6 strips) 2. Chemicals should be used in small quantities
during the white powder test. Three or four
 Spot plates (1 pack of 12)
drops will be sufficient.
 Powder dispenser spatulas (6 sets)
 All GC-MS Data (6 sets)

OTHER SUPPLIES AND
EQUIPMENT REQUIRED

 Lab gloves
 Distilled water

 Pipettes for dispensing distilled water
 Permanent marker for labeling

THE MYSTERY OF LYLE AND LOUISE 5