Lesson 3/Learning Event 1
FIGURE 24. ADD TWO DROPS OF SUBSTRATE
Step 5. Observe the color of the disk in the square end of the detector ticket. Indication will appear
within three minutes (figure 25). If the disk is white or light red-orange, V or G agent, or a
combination of V and G agents, is present in the atmosphere. If the disk is blue, no V or G agent is
present in the atmosphere. If most of the disk is white or light red-orange, with a fringe of blue,
very low concentrations of V or G agents are present.
FIGURE 25. DIFFERENT COLORS INDICATE THE
PRESENCE OF CHEMICAL AGENTS.
Test for CK After the detector tickets have been used to test for V or G agents, a blue-band detector
tube is used to detect the presence of CK.
It might be helpful for personnel wearing rubber gloves to use the
carrier snap fastener opening to break the detector tubes at the