Warranty, standards and storage

This is a particle filter with a hydrophobic layer for capturing biological, toxic and radioactive solid and liquid particles, dust, aerosols, microorganisms, bacteria and viruses. It is not designed to filter harmful gases. It can be connected to a filtration device with auxiliary ventilation. Plus version with extra low breathing resistance.

WARRANTY

Thanks to the use of top quality materials and consistent production control, we provide an above-standard quality warranty for our products, if the storage conditions are complied with.

STANDARDS

All SIGMA protective filters meet the requirements of Czech and European technical standards governing the development, production, testing and use of these important respiratory protection devices. In many respects, our filters significantly exceed the parameters required by standards, providing the highest possible filtration efficiency, high user comfort and extended exposure time in environments with harmful substances. All this while maintaining optimal weight and high mechanical resistance.

STORAGE

Long-term preservation of filtration properties in storage is ensured by vacuum packaging of protective filters in a special, durable multilayer plastic or aluminum film. Products are distributed in cardboard boxes according to customer requirements.

SUPPORT

We provide technical support in the form of instructions for use, storage and ecological disposal of products.

OTHER MARKING

TH – filter for auxiliary ventilation devices attached to a helmet or balaclava
TM – filter for auxiliary ventilation devices connected to mask, half-mask respirator and quarter-mask respirators
SL (Solid Liquid) – filter for the filtration of solid and liquid aerosols
D (Dolomite) – the filter is resistant to dust clogging
R (Re-usable) – the filter is designed for repeated use

REQUIREMENTS PURSUANT TO ČSN EN 14387

Colour	Type	Class	Concentration of test gas	Test gas	Minimum penetration time	Area of use
BROWN	A	1	0.1 % (1000 ppm)	cyclohexane	70 minutes	organic gases and vapours with a boiling point > 65 °C
		2	0.5 % (5000 ppm)	cyclohexane	35 minutes
		3	0.8 % (8000 ppm)	cyclohexane	65 minutes
GREY	B	1	0.1 % (1000 ppm)	chlorine, hydrogen sulfide, hydrogen cyanide	20, 40, 25 minutes	inorganic gases and vapours
		2	0.5 % (5000 ppm)	chlorine, hydrogen sulfide, hydrogen cyanide	20, 40, 25 minutes
		3	1.0 % (10000 ppm)	chlorine, hydrogen sulfide, hydrogen cyanide	30, 60, 35 minutes
YELLOW	E	1	0.1 % (1000 ppm)	sulfur dioxide	20 minutes	sulfur dioxide, acid gases and vapours, hydrogen chloride
		2	0.5 % (5000 ppm)	sulfur dioxide	20 minutes
		3	1.0 % (10000 ppm)	sulfur dioxide	30 minutes
GREEN	K	1	0.1 % (1000 ppm)	ammonia	50 minutes	ammonia and organic amines
		2	0.5 % (5000 ppm)	ammonia	40 minutes
		3	1.0 % (10000 ppm)	ammonia	60 minutes
RED	Hg	–	1.6 ml/m3	mercury	min. 100 hours	mercury, mercury and its compounds, max. time of use 50 hours
PURPLE	SX	–	0.1 % (1000 ppm)	phosgene	min. 100 minutes	asphyxiant acid gases

More chemicals can be found in the filter selection guide on our website.

REQUIREMENTS PURSUANT TO ČSN EN 143

Colour	Type	Class	Maximum penetration of the test aerosol	Area of use	Test gas
WHITE	P	1	20 %	Filters for coarse particles (insects, sand, pollen)	Sodium chloride and paraffin oil at 95 l/min.
		2	6 %	Filters for fine particles (tobacco smoke, soot)
		3	0.05 %	Filters for microparticles (bacteria, viruses, aerosols)