Lesson 3/Learning Event 3
LEARNING EVENT 3:
COLLECT SAMPLES OF UNKNOWN
USING THE M34 CB AGENT SAMPLING KIT
members or unit chemical survey party members using the M34 CB Agent Sampling Kit.
Chemical Agent Samples
Samples of an unknown chemical agent may be collected from the soil, from surfaces, and from
water. Personnel collecting samples should direct their attention to shell craters, low-lying patches
of woods, defiles, ravines, and areas covered with high grass or underbrush. Water sources also
should be checked for contamination. Each sample must be carefully marked with the date, time,
location, and sample number.
The Procedure for Collecting a Soil Sample of an Unknown Chemical Agent. This procedure is
performed according to the following steps.
Step 1. Unroll a soil extraction bag and remove the paper clip and spacer.
Step 2. Fold up the bottom of the bag three times and fasten the fold with the paper clip.
Step 3. Scoop a thin layer (not more than one-half inch) of top soil from a small area into the bag.
Do not fill the bag more than one-fourth full.
Step 4. Fold down the top of the bag three times and seal the bag with the tie straps.
Step 5. Place the sample in the soil kit.
Step 6. Discard the scoop after all samples have been collected.
Process the soil sample as soon as possible after it has been
This procedure is performed according to the
The Procedure for Processing a Soil Sample.
Step 1. Untie and unfold the top of the soil extraction bag.
Step 2. Remove the seal and cap from an extraction fluid bottle.