Lesson 3/Learning Event 1
Step 1. Snap both ends from a blue-band tube at the scorings (figure 26) and press the unmarked
end of the detector tube into the adapter. Then, with the detector tube pointing down, compress the
bulb 60 times.
Step 2. Remove the detector tube from the adapter. If a yellow or orange color appears in the
detector tube, CK is present. Discard the detector tube and omit the test for G agent and the test for
mustards or CX.
FIGURE 26. USE BLUE-BAND DETECTOR
TUBE TO TEST FOR CK.
Test for G agent This test uses the same blue-band detector tube used in the CK test. This test is
performed only if the CK is negative.
Step 1. Squeeze one drop of reagent solution from the green-marked bottle into the banded end of
the blue-band detector tube (figure 27 on page 55). If a yellow color appears within one minute, G
agent is present.
Test for mustard or CX vapors. This test is performed only if the CK test is negative. Use a new
blue-band detector tube for this test.
Step 1. Snap both ends from the detector tube at the scorings and press the unmarked end of the
tube into the adapter. Then, with the detector tube pointing down, compress the bulb 60 times.
Remove the detector tube from the adapter.
Step 2. Wait at least two minutes after sampling, then squeeze one drop of reagent solution from the
blue-marked bottle into the banded end of the detector tube.
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