Break the top (gray) ampule in the tube. Shake the tube vigorously
for 10 seconds Allow the reaction to proceed for additional 50 seconds (total of one minute),
while shaking intermittently several times.
Using the 5 mL pipette, add five milliliters of extract solution to the back-capped tube. Tighten
the cap securely and shake vigorously until the foam and dark color disappear
Vent the tube by
partially unscrewing the black cap while holding the tube upright.