M272 Nuclear, Biological, Chemical
Water Sampling Kit
A. NSN 6665-01-134-0885 Water Testing
Kit, Chemical Agents: M272, Technical
Manual Operator’s Manual
Potable - drinkable, good, clean.
Stimulant - chemical which reacts and tests like CW
M272 First Aid & Safety
1. Avoid all bodily contact with kit chemicals.
2. Alkaline chemicals used in mustard test is
M272 Equipment Characteristics
Purpose – portable, lightweight kit that will detect and
identify harmful amounts of CW agents when
present in raw or treated water.
Capabilities & Features – detects cyanide, mustard,
lewisite and nerve agents.
M272 Operator’s Control & Indicators
General – indicators which the operator looks
for in each of the four agent tests:
1. Nerve Agent Test
2. Lewisite Test
3. Cyanide Test
4. Mustard Test
Nerve Agent Test
When NERVE AGENT is present in water,
TEST PATCH STAYS WHITE.
When NO NERVE AGENT is present, WHITE
TEST PATCH TURNS BLUE.
When LEWISITE is present in water, WHITE
BEADS turn YELLOW or BROWNISH.
When NO LEWISITE is present, BEADS stay
Cyanide & Mustard Tests
When CYANIDE is present in water, WHITE BEADS in
RED band tube TURN BLUE.
When NO CYANIDE is present, BEADS STAY WHITE.
When MUSTARD is present in water, WHITE BEADS
in BLUE band tube TURN PURPLE.
When NO MUSTARD is present, BEADS STAY
PMed Checks & Services (PMCS)
General – before you operate, always keep in
mind the WARNINGS and CAUTIONS.
After you operate, be sure to do your After
Operation (A) PMCS.
Operation Under Usual Conditions
• Avoid all bodily contact with kit chemicals
• During CW alert or CW agent work, wear
MOPP Level 4 PPE
• Do not use kit if you cannot see the colours
• Do not use outdated kit for testing
Assembly & Preparation for Use
(1) Unpack Kit
(2) Locate Kit
(3) Do Before Operation (B) PMCS while
setting up Kit
(4) Review Kit Instructions
(5) Assemble Other Items
Prepare Alkaline Solution
Alkaline chemical used in the mustard test is
extremely hazardous. One drop of this liquid
accidentally splashed into the eye can cause
permanent vision loss even if immediate first
aid is applied.
In each test you will check test water
temperature. If it is less than 50F (10C),
refer to “Operation Under Unusual
Conditions”, for differences in test
Your kit instruction card also contains this
information for testing with cold water
Test 1 - Lewisite
When TEST 2 – NERVE AGENT is done, remove blue
band tube from stopper assembly. Compare colour
of beads with Lewisite Test Colours on instruction
• YELLOW or BROWNISH beads means DANGER
• ALL WHITE beads means SAFE = No LEWISITE
Test 2 – Nerve Agent
Read nerve agent test results carefully. In this test,
NO COLOUR CHANGE on the white patch means
agent is present.
Compare colours of patch on end with clipped corners
with Nerve Agent Test Colours on instruction card:
• WHITE patch means DANGER – NERVE AGENT
• BLUE patch, MATCHING or BLUER than test
colours, means SAFE – No NERVE AGENT
Test 3 - Cyanide
• BLUE beads mean DANGER – CYANIDE
• ALL WHITE beads mean SAFE – No
Note: Yellow beads in blue band tube will not
interfere with mustard test.
Test 4 - Mustard
IGNORE any TAN colour
• PURPLE beads mean DANGER – Mustard
• ALL WHITE (or TAN) beads mean SAFE –
Operation In Unusual Conditions
COLD 32-50F (0-10C)
HOT 105-125F (41-52C)
FREEZING Below 32F (0C), Wind, Rain, or
1. Vapour exposure
2. Droplet exposure:
– Overpacked kits
– Closed kits
– Open kits
– Simulant contamination
Prep Trg Simulant Test Water
GENERAL: Test water having a known
simulant agent is used for operator training
to practice water tests which give colours like
the real CW agent.
However, DO NOT use simulants to field check
Prep Simulant Test Water
Test water for each simulant agent is prepared