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Detect chemical agents using M8 or M9 detector paper

Upon completion of this lesson, you will understand the procedures to detect chemical agents using M8 or M9 detector paper.

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Terminal Learning Objective

Upon completion of this lesson, you will understand the procedures to detect chemical agents using M8 or M9 detector paper.

Learning Objective A

This topic will address how to use M8 detector paper to identify chemical agents.

M8 Detector Paper

In plastic bag inside chemical agent detector kits (M256/M256A1)

There are 25 sheets per booklet

Detects liquid nerve and blister agents

Color Changes

Yellow-gold indicates G (nerve) agent

Red-pink indicates H (blister) agent

Dark green indicates V (nerve) agent

If any other color or no color change, liquid cannot be identified

False Negatives

WARNING-When conducting agent tests at night, remove any colored lens because it may provide a false negative response.

False Positives

WARNING-Some decontaminants give false positive readings. The M8 paper may indicate positive results if used in an area where decontaminants have been used.

When to Use M8 Paper

See a liquid that might be a chemical agent

Observe any color change on M9 detector paper

Notice chemical agent symptoms in soldiers

Procedures to Use M8 Paper

Immediately assume MOPP4

Locate liquid contamination

Remove the M8 detector paper from mask carrier

Prepare M8 detector paper

Procedures to Use M8 Paper

Blot (DO NOT RUB) M8 paper on suspected liquid agent

Observe paper for a color change

Compare color on paper to color chart in booklet

Procedures to Use M8 Paper

Close/store booklet of M8 detector paper

Remain in MOPP4

Use other chemical agent detectors to verify test results

Report test results to supervisor

Learning Objective B

This objective will address how to detect chemical agents using M9 detector paper.

M9 Detector Paper

In a dispenser roll

Detects chemical agents

Cannot be used to identify chemical agents

Used in all types of weather/temperatures

Sticks to clothing, vehicles, other equipment

Procedures to Use M9 Paper

Attach M9 detector paper to protective clothing

Wrap M9 paper around upper arm

Wrap M9 paper around wrist of jacket

Wrap M9 paper around ankle just above boot

Overlap of M9 Paper

CAUTION: Leave at least one inch of overlap when placing paper on MOPP gear to minimize the difficulties experienced while conducting MOPP gear exchange.

Procedures to Use M9 Paper

Attach M9 paper to surfaces most likely to encounter chemical agents

Note any color changes on M9 paper

Constantly monitor M9 paper for any color change

If color changes: mask, give the alarm, decon (as necessary), assume MOPP4


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