1. Interferences and Environmental Conditions (1 of 3)
DETECTOR
ITEM
RESULT
M8 PAPER
Wasp Spray
Yellow
Various Cleaning Supplies
Yellow or Red
Benzene
Red
Typewriter Cleaner
M9 PAPER
Semifluid Lubricant for Automatic Weapons
Aircraft Grease/Cleaning Compounds
Positive
Several Lubricating Oils
DS-2
Heat (weapon barrels, vehicle hoods, etc.)
Sand-colored Camouflage Stick
Inspect Repellents and Sprays
Hydraulic and Brake Fluid
Temperatures above 125F (52 C)
Gasoline/Antifreeze
Temperatures below 32ºF; 0ºC
Inability to detect GD and VX
* Final Report Development Test II (Prototype Qualification Test-Government) of M9 Detector Paper Non-Mutagenic Replacement Dye, DPG-LR , Feb 82

2. Interferences and Environmental Conditions (2 of 3)
DETECTOR
ITEM
RESULT
M256A1
Smoke or Burning Brush
False “Blood”
HC (White) Smoke
False “Blood” & “Blister”
STB (Dry Powder)
False “Blister” & “Lewisite”
Tropical Conditions
False HD
M258A1 Decon Kit
High “H”
DS-2
Low “G”
Insect Repellent
Low to Very High “G”
CHEMICAL AGENT
Brake Fluid
High to Very “G” and Very High “H”
MONITOR (CAM)
General Purpose Cleaner
High “G”
Burning Kerosene
Breath Mints
Gasoline Vapor
Low “G” & “H”
Burning Grass
Low to High “G” and Low “H”
Green Smoke
Low “G” and Low to High “H”

3. Interferences and Environmental Conditions (3 of 3)
Positive
High Dust Conditions
May Interfere; No Data on Specific Results
Dry Bleach and Slurry Vapor
M18A2
Engine Exhaust Fumes
Tobacco Smoke
Gasoline
</=87.5 reliability of VX detection (0 C); </= 70% of VX detection ( C and 52 C)
Presence of Chlorine in H2O
M272
JP-4 Fuel Vapor
Talcom Dust
Putrescent Animal Tissues
Mechanical Failure
Relative Humidity >/= 90%
M90
Diesel Exhaust
POL Materials
M8A1
Colored Smokes
RESULT
ITEM
DETECTOR