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NBC Masks

NBC masks (model TH-1 and TH-1H) are designed for the use of civilians' respiratory protection to evacuate from NBC (Nuclear,Biological,Chemical) events. "Evacuate" means an emergency escape from contaminated / hazardous area and does not mean an operations such as rescue, refuge guidance and disposal works in hazardous environments. This is because NBC suit is required for complete protection against nerve agents such as Sarin , vesicant agents such as Sulfur Mustard, which can be absorbed through eyes and skin. Unfortunately, we are unable to tell when NBC events happen, and in a real life, it is almost impossible for civilians to get NBC suit prepared. Besides, NBC masks are easy to wear and effective in terms of respiratory protection. Therefore, NBC masks (especially model TH-1H with hood) are the most reasonable conclusion for civilians at this moment.


Full Face Type Model TZ-1	Half Face Model TH-1	Half Face with Hood Model TH-1H	For Children Model TH-1HJ

NBC masks prevents wearer from breathing nerve agents such as Sarin , vesicant agents such as Sulfur Mustard, blood agents such as Hydrocyanic acid and Suffocation agent such as Chlorine.

Also NBC Masks prevents wearer from breathing extreme toxic materials such as radioactive dusts, virus (e.g. smallpox) , and bacteria (e.g. anthrax ) .

Once masks are used for virus and bacteria, they must be incinerated before being disposed of.

Not available for evacuation from fire as the NBC masks are not available for carbon monoxide.

Training for proper mask fitting is available as the mask is kept in an ammonium zipper bag.

Performance validity is 2 years after production.

Hood model TH-1H and TH-1HJ can be used with your eyeglasses. Hood (made of soft polyolefin film / 3 layers) protects wearer to absorb gases and droplets through skin of head.

Filtering Efficiency
(1) Filtering efficiency with Pulse airflow and Continuous airflow at each particulate diameter
Test conditions
Test particulate : NaCl
Air flow : 1.5 * 20times / min Pulse airflow 85liter / min continuous airflow

Air flow	Total test particle supplied (mg)	Filtering Efficiency (%)
Air flow	Total test particle supplied (mg)	0.1- 0.15µm	0.15- 0.2µm	0.2- 0.3µm	0.3- 0.5µm	0.5- 1.0µm	1.0- 2.0µm
1.5liter X 20times / min	Initial	99.78	99.92	99.96	99.99	Not less than 99.99	Not less than 99.99
	10	99.63	99.83	99.90	99.95	99.98	Not less than 99.99
	20	99.44	99.68	99.78	99.90	99.97	99.99
	30	99.19	99.46	99.59	99.79	99.92	99.97
85liter / min	Initial	99.44	99.74	99.84	99.91	99.96	Not less than 99.99
	10	99.17	99.51	99.66	99.81	99.93	99.96
	20	99.00	99.33	99.48	99.70	99.88	99.92
	30	98.60	98.90	99.11	99.47	99.78	99.84

(2) DOP filtering efficiency (Based on the specification DSP Z 4002B by Japan Defense Agency)
Test conditions
Average diameter of test particulate : 0.3µm
Air flow : 30liter

20times / min
Test result
Not less than 99.99% (20 trial samples)

(3) Filtering efficiency based on National test procedure
Test conditions
Test particulate : NaCl (0.06 - 0.10µm)
Air flow : 85liter / min
Test result
Category RS2 (N95) compatible

NO.	Minimum Filtering Efficiency
1	97.825
2	98.447
3	98.687

Service Life

Gas Type	Humidity load (Relative humidity)				Temperature Load
Gas Type	30%	50%	65%	80%	30°C
Chloropicrin	91.5min	58.7min	58.3min	39.9min	39.9min
Hydrocyanic Acid Gas	37.9min	65.6min	66.3min	73.8min	70.3min
Chlorine Gas	22.5min	27.8min	28.0min	46.7min	27.8min

Test conditions
Humidity load: 20°C, 700ppm Temperature load 50%, 700ppm
In relation to humidity, for Chloropicrin, the more humid, the shorter service life, and the lesser humid, the longer service life. And for Hydrocyanic acid gas and Chlorine gas, the more humid, the longer service life.
In relation to temperature, for Chloropicrin, the higher the temperature is, the shorter service life. And for Hydrocyanic acid gas and Chlorine gas, the higher the temperature is, almost no change or longer service life.

Inhalation Resistance
Easiness in breathing is very important factor for evacuation mask. If breathing is tough, it may make evacuation difficult or give mental stress to the evacuators. And the is more important thing is, that the mask with high inhalation resistance shows higher inward leakages. Our NBC masks' inhalation resistance is around 100Pa at 40liter / min (National Test), which is very low figure with above filtering efficiency and service life.