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breathing air filter box

breathing air filter box, Total:158 items.

In the international standard classification, breathing air filter box involves: Fluid power systems, Protective equipment, Refrigerating technology, Air quality, Analytical chemistry.

U.S. Military Regulations and Norms, breathing air filter box

ARMY MIL-R-3308 B NOTICE 1-1996 RESPIRATOR, AIR FILTERING, DUST, ABC-M4
ARMY MIL-R-3308 B-1965 RESPIRATOR, AIR FILTERING, DUST, ABC-M4

American National Standards Institute （ANSI), breathing air filter box

ANSI/AIHA/ASSE Z88.7-2010 Color Coding of Air-Purifying Respirator Canisters, Cartridges, and Filters
ANSI/AIHA Z88.7-2010 Color Coding of Air-Purifying Respirator Canisters, Cartridges, and Filters

German Institute for Standardization, breathing air filter box

DIN EN 12083:1998-06 Respiratory protective devices - Filters with breathing (Non-mask mounted filters) - Particle filters, gas filters, and combined filters - Requirements, testing, marking; German version EN 12083:1998
DIN EN 12083:1998 Respiratory protective devices - Filters with breathing (Non-mask mounted filters) - Particle filters, gas filters, and combined filters - Requirements, testing, marking; German version EN 12083:1998
DIN EN 14387:2021-07 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking; German version EN 14387:2021
DIN EN 14387:2008 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking(includes Amendment A1:2008); English version of DIN EN 14387:2008-05
DIN EN 14387:2021 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking; German version EN 14387:2021
DIN 58620:2007 Respiratory protective devices - Gas filter(s) and combined filter(s) for protection against carbon monoxide - Requirements, testing, marking
DIN 58620:2007-02 Respiratory protective devices - Gas filter(s) and combined filter(s) for protection against carbon monoxide - Requirements, testing, marking
DIN EN 405:2009-08 Respiratory protective devices - Valved filtering half masks to protect against gases or gases and particles - Requirements, testing, marking; German version EN 405:2001+A1:2009
DIN ISO 10473:2002-08 Ambient air - Measurement of the mass of particulate matter on a filter medium - Beta-ray absorption method (ISO 10473:2000)
DIN EN 1827:2009-11 Respiratory protective devices - Half masks without inhalation valves and with separable filters to protect against gases or gases and particles or particles only - Requirements, testing, marking; German version EN 1827:1999+A1:2009

PL-PKN, breathing air filter box

PN Z02011-01-1986 Indyvidual respiratory protective e?uipment used in air environment Filter-type respirator equipment, filter- -type absorbers and filter-type absorber cartridges Division and definition
PN-EN 14387-2021-07 E Respiratory protective devices -- Gas filter(s) and combined filter(s) -- Requirements, testing, marking
PN Z02011-02-1986 Indyvidual respiratory protective e?uipment used in air eiwironment Filter-type respirator equipment, filter-type absorbers and filter-type absorber cartridges Marking information inscriptions and instructions for the use
PN Z02011-03-1986 Indyvidual respiratory protective e?uipment used in air erwironment Filter-type respirator e?uipment filter-type absorbers and filter-type absorber cartridges Re?uirements and tests
PN Z02014-01-1992 Respiratory protective e?uipment used in air environment Antidust halfmasks and filters Classification and definitions
PN Z02010-16-1987 Individual respiratory protective e?uipment use in air environment Methods of testing Determination of resistance of filtraging — absorbing inserts to the water mist effect
PN Z02014-03-1992 Respiratory protective equipment used in air environmentAntidust halfmasks and filters Re?uirements and methods of testing of filters
PN Z02010-15-1987 Individual respiratory protective equipment used in air environment Methods of testing Method for sodium chloride particulate test for respirator filters
PN Z02014-02-1992 Respiratory protective e?uipment used in air environment Antidust halfmasks and filters Markings, information inscriptions and instructions for using
PN Z02014-05-1992 Respiratory protective e?uipment used in air environment Antidust half masks and filters Quality inspection

ES-UNE, breathing air filter box

UNE-EN 12083/AC:2000 Respiratory protective devices - Filters with breathing hoses, (Non-mask mounted filters) - Particle filters, gas filters, and combined filters - Requirements, testing, marking
UNE-EN 14387:2022 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking

British Standards Institution (BSI), breathing air filter box

BS EN 12083:1998 Respiratory protective devices - Filters with breathing hoses, (non-mask mounted filters) - Particle filters, gas filters, and combined filters - Requirements, testing, marking
BS EN 14387:2004 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking
BS EN 14387:2004+A1:2008 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking
BS EN 14387:2021 Respiratory protective devices. Gas filter(s) and combined filter(s). Requirements, testing, marking
17/30359208 DC BS EN 14387. Respiratory protective devices. Gas filter(s) and combined filter(s). Requirements, testing, marking
BS ISO 17420-6:2021 Respiratory protective devices. Performance requirements. Special application escape. Filtering RPD and supplied breathable gas RPD
BS ISO 16900-8:2015 Respiratory protective devices. Methods of test and test equipment. Measurement of RPD air flow rates of assisted filtering RPD
BS ISO 17420-5:2021 Respiratory protective devices. Performance requirements. Special application fire and rescue services. Supplied breathable gas RPD and filtering RPD
BS ISO 17420-7:2021 Respiratory protective devices. Performance requirements. Special application marine, mining, welding, and abrasive blasting. Filtering RPD and supplied breathable gas RPD
20/30375024 DC BS ISO 17420-6. Respiratory protective devices. Performance requirements. Part 6. Special application escape. Supplied breathable gas RPD and filtering RPD
20/30375021 DC BS ISO 17420-5. Respiratory protective devices. Performance requirements. Part 5. Special application fire and rescue services. Supplied breathable gas RPD and filtering RPD
20/30415911 DC PD ISO/TS 17420-4. Respiratory protective devices. Performance requirements. Part 7. Special application other than fire services and escape. Supplied breathable gas RPD and filtering RPD
BS ISO 16900-4:2013 Respiratory protective devices. Methods of test and test equipment. Determination of gas filter capacity and migration, desorption and carbon monoxide dynamic testing
BS EN 1827:1999+A1:2009 Respiratory protective devices - Half masks without inhalation valves and with separable filters to protect against gases or gases and particles or particles only - Requirements, testing, marking
BS EN 1827:1999 Respiratory protective devices - Half masks without inhalation valves and with separable filters to protect against gases or gases and particles or particles only - Requirements, testing, marking
BS ISO 16900-4:2011 Respiratory protective devices. Methods of test and test equipment. Determination of gas filter capacity and migration, desorption and carbon monoxide dynamic testing
BS ISO 16258-1:2015 Workplace air. Analysis of respirable crystalline silica by X-ray diffraction. Direct-on-filter method

ZA-SANS, breathing air filter box

SANS 275:2004 Respiratory protective devices - Filters with breathing hoses, (Non-mask mounted filters) - Particle filters, gas filters, and combined filters - Requirements, testing, marking
SANS 54387:2007 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking
SANS 50141:2003 Respiratory protective devices - Gas filters and combined filters - Requirements, testing, marking
SANS 50372:1992 Respiratory protective devices - SX gas filters and combined filters against specific named compounds - Requirements, testing, marking
SANS 50371:1992 Respiratory protective devices - AX gas filters and combined filters against low boiling organic compounds - Requirements, testing, marking
SANS 50405:2003 Respiratory protective devices - Valved filtering half masks to protect against gases or gases and particles - Requirements, testing, marking

Danish Standards Foundation, breathing air filter box

DS/EN 12083/AC:2000 Respiratory protective devices - Filters with breathing hoses, (Non-mask mounted filters) - Particle filters, gas filters, and combined filters - Requirements, testing, marking
DS/EN 12083:1998 Respiratory protective devices - Filters with breathing hoses, (Non-mask mounted filters) - Particle filters, gas filters, and combined filters - Requirements, testing, marking
DS/EN 141:1992 Respiratory protective devices.Gas filters and combined filters. Requirements,testing,marking
DS/EN 14387+A1:2008 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking
DS/EN 14387:2021 Respiratory protective devices – Gas filter(s) and combined filter(s) – Requirements, testing, marking
DS/EN 372:1992 Respiratory protective devices. SX gas filters and combined filters against specific named compounds. Requirements, testing, marking
DS/ISO 17420-6:2021 Respiratory protective devices – Performance requirements – Part 6: Special application escape – Filtering RPD and supplied breathable gas RPD
DS/EN 371:1992 Respiratory protective devices. AX gas filters and combined filters against low boiling organic compounds. Requirements, testing, marking
DS/ISO 17420-7:2021 Respiratory protective devices – Performance requirements – Part 7: Special application marine, mining, welding, and abrasive blasting – Filtering RPD and supplied breathable gas RPD
DS/EN 405+A1:2009 Respiratory protective devices - Valved filtering half masks to protect against gases or gases and particles - Requirements, testing, marking

Lithuanian Standards Office , breathing air filter box

LST EN 12083+AC-2001 Respiratory protective devices - Filters with breathing hoses, (Non-mask mounted filters) - Particle filters, gas filters, and combined filters - Requirements, testing, marking
LST EN 14387-2004+A1-2008 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking
LST EN 14387-2021 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking
LST ISO 10473:2001 Ambient air. Measurement of the mass of particulate matter on a filter medium. Beta-ray absorption method
LST EN 405-2002+A1-2009 Respiratory protective devices - Valved filtering half masks to protect against gases or gases and particles - Requirements, testing, marking

AENOR, breathing air filter box

UNE-EN 12083:1998 Respiratory protective devices - Filters with breathing hoses, (Non-mask mounted filters) - Particle filters, gas filters, and combined filters - Requirements, testing, marking
UNE-EN 14387:2004+A1:2008 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking
UNE-ISO 10473:2005 Ambient air -- Measurement of the mass of particulate matter on a filter medium -- Beta-ray absorption method
UNE 77230:1998 AMBIENT AIR. DETERMIANTION OF THE PARTICULATE LEAD CONTENT OF AEROSOLS COLLECTED ON FILTERS. ATOMIC ABSORPTION SPECTROMETRIC METHOD.
UNE-EN 405:2002+A1:2010 Respiratory protective devices - Valved filtering half masks to protect against gases or gases and particles - Requirements, testing, marking

Association Francaise de Normalisation, breathing air filter box

NF EN 12083:1998 Appareils de protection respiratoire - Filtres avec tuyaux respiratoires, filtres à particules, filtres antigaz et filtres combinés (filtres non montés sur un masque) - Exigences, essais, marquage.
NF S76-055*NF EN 14387:2021 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking
NF EN 14387:2021 Appareils de protection respiratoire - Filtres anti-gaz et filtres combinés - Exigences, essais, marquage
NF S76-055/IN1:2008 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking.
NF S76-055:2008 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking.
NF S76-026:1992 RESPIRATORY PROTECTIVE DEVICES. SX GAS FILTERS AND COMBINED FILTERS AGAINST SPECIFIC NAMED COMPOUNDS. REQUIREMENS,TESTING,MARKING. (EUROPEAN STANDARD EN 372).
NF S76-025:1992 RESPIRATORY PROTECTIVE DEVICES. AX GAS FILTERS AND COMBINED FILTERS AGAINST LOW BOILING ORGANIC COMPOUNDS. REQUIREMENTS,TESTING,MARKING. (EUROPEAN STANDARD EN 371).
NF S76-016/IN1*NF EN 405/IN1:2009 Respiratory protective devices - Valved filtering half masks to protect against gases or gases and particles - Requirements, testing, marking
NF ISO 16900-8:2015 Appareils de protection respiratoire - Méthodes d'essai et équipement d'essai - Partie 8 : mesurage des débits d'air des APR filtrants à ventilation assistée
NF S76-020-8*NF ISO 16900-8:2015 Respiratory protective devices - Methods of test and test equipment - Part 8: measurement of RPD air flow rates of assisted filtering RPD
NF X43-296:1995 Air des lieux de travail - Détermination par rayons X de la fraction conventionnelle alvéolaire de la silice cristalline - Échantillonnage sur membrane filtrante.
NF X43-040*NF ISO 10473:2000 Ambient air - Measurement of the mass of particulate matter on a filter medium - Beta-ray absorption method
NF X15-211:1996 Laboratory equipment. Enclosure for toxic using recirculating air filtration. General, classification, requirements.
NF EN 405/IN1:2009 Appareils de protection respiratoire - Demi-masques filtrants à soupapes contre les gaz ou contre les gaz et les particules - Exigences, essais, marquage
NF EN 405+A1:2009 Appareils de protection respiratoire - Demi-masques filtrants à soupapes contre les gaz ou contre les gaz et les particules - Exigences, essais, marquage
NF ISO 10473:2000 Air ambiant - Mesurage de la masse des matières particulaires sur un milieu filtrant - Méthode par absorption de rayons bêta
NF EN 1827/IN1:2009 Appareils de protection respiratoire - Demi-masques sans soupape inspiratoire et avec filtres démontables, contre les gaz, contre les gaz et les particules, ou contre les particules uniquement - Exigences, essais, marquage
NF EN 1827+A1:2009 Appareils de protection respiratoire - Demi-masques sans soupape inspiratoire et avec filtres démontables, contre les gaz, contre les gaz et les particules, ou contre les particules uniquement - Exigences, essais, marquage
NF ISO 16900-4:2012 Appareils de protection respiratoire - Méthodes et équipement d'essai - Partie 4 : détermination de la capacité d'un filtre à gaz et essais de migration, de désorption et dynamique au monoxyde de carbone
NF X43-600-1*NF ISO 16258-1:2015 Workplace Air - Analysis of respirable crystalline silica by X-ray diffraction - Part 1: direct-on-filter method

Professional Standard - Machinery, breathing air filter box

JB/T 11212-2011 Suction-line filter and suction-line filter-driers for refrigerant system and air conditioning

RU-GOST R, breathing air filter box

GOST R EN 12083-2011 Occupational safety standards system. Respiratory protective devices. Filters with breathing hoses (filters with hoses). Particle filters, gas filters and combined filters. Requirements, testing, marking
GOST 12.4.245-2013 Occupational safety standards system. Respiratory protective devices. Gas filters and combined filters. General specifications
GOST R 12.4.193-1999 Occupational safety standards system. Respiratory protective devices. Gas filters and combined filters. General specifications
GOST R 12.4.251-2009 Occupational safety standards system. Respiratory protective devices. Gas filters and combined filters. Requirements. Testing. Marking
GOST 12.4.235-2012 Occupational safety standards system. Respiratory protective devices. Gas filters and combined filters. General technical requirements. Test methods. Marking
GOST R 12.4.232-2007 Occupational safety standards system. Respiratory protective devices. SX gas filters and combined filters for protection against specific named compounds. General specifications
GOST R 12.4.231-2007 Occupational safety standards system. Respiratory protective devices. AX gas filters and combined filters for protection against low-boiling organic compounds. General specifications
GOST R ISO 10473-2007 Ambient air. Measurement of the mass of particulate matter on a filter medium. Beta-ray absorption method
GOST R 12.4.192-1999 Occupational safety standards system. Respiratory protective devices. Valved filtering half masks to protect against gases and gases ans particles. General specifications
GOST R ISO 16258-1-2017 Workplace air. Analysis of respirable crystalline silica by X-ray diffraction. Part 1. Direct-on-filter method

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, breathing air filter box

GB/T 6224.4-1986 Test method for airflow resistance of respiration of filtering particle respirator

BE-NBN, breathing air filter box

NBN-EN 141-1991 Respiratory protective devices - Gas filters and combined filters - Requirements, testing, marking
NBN-EN 405-1993 Respiratory protective devices. Valved filtering half masks to protect against gases or gases and particles. Requirements, testing, marking
NBN T 94-402-1977 Determination of the zinc mass in particles collected by air fil-tration - Atomic absorption spectrophotometry
NBN T 94-404-1977 Determination of the copper mass in particles collected by air filtration - Atomic absorption spectrophotometry
NBN T 94-403-1977 Determination of the cadmium mass in particles collected by air filtration - Atomic absorption spectrophotometry
NBN T 94-401-1977 Determination of the lead mass in particles collected by air filtration - Atomic absorption spectrophotometry
NBN T 94-406-1977 Determination of the ironmass m particles collected by air filtration - Atomic absorption spectrophotometry
NBN T 94-405-1977 Determination of the nickel mass in particles collected by air fil-tration — Atomic absorption spectrophotometry

European Committee for Standardization (CEN), breathing air filter box

EN 14387:2004+A1:2008 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking
EN 14387:2004 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking (Incorporates Amendment A1: 2008)
EN 141:2000 Respiratory Protective Devices - Gas Filters and Combined Filters - Requirements, Testing, Marking
EN 14387:2021 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking
EN 141:1990 Respiratory protective devices; gas filters and combined filters; requirements, testing, marking
EN 12083:1998 Respiratory protective devices - Filters with breathing hoses (Non-mask mounted filters) - Particle filters, gas filters, and combined filters - Requirements, testing, marking
EN 372:1992 Respiratory protective devices; SX gas filters and combined filters against specific named compounds; requirements, testing, marking
EN 371:1992 Respiratory protective devices; AX gas filters and combined filters against low boiling organic compounds; requirements, testing, marking

CH-SNV, breathing air filter box

SN EN 14387-2021 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking

IT-UNI, breathing air filter box

UNI EN 14387-2021 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements, testing, marking
UNI 7454-1975

CEN - European Committee for Standardization, breathing air filter box

PREN 14387-2017 Respiratory protective devices - Gas filter(s) and combined filter(s) - Requirements@ testing@ marking

未注明发布机构, breathing air filter box

DIN EN 141:2000 Respiratory protective devices — Gas filters and combined filters — Requirements, testing, marking
BS EN 141:2000 Respiratory protective devices - Gas filters and combined filters - Requirements , testing , marking
DIN EN 371:1992 Respirators — AX gas filters and combination filters against low-boiling organic compounds
DIN EN 13328-2:2004 Filters for respiratory systems for use in anesthesia and ventilation – Part 2: Aspects not related to filtration
DIN EN 12941:2004 Respiratory protective devices – forced air filter devices with a helmet or a hood – requirements, testing, labeling
BS EN 371:1992(1999) Specification for AX gas filters and combined filters against low boiling organic compounds used in respiratory protective equipment
BS EN 372:1992(1999) Specification for SX gas filters and combined filters against specific named compounds used in respiratory protective equipment
DIN EN 372:1992 respiratory protective devices; SX gas filters and combined filters against specific named compounds; Requirements, testing, marking;

AT-ON, breathing air filter box

ONORM EN 141-1991 Respiratory protective devices - Gas filters and combined filters - Requirements, testing, marking
ONORM EN 372-1992 Respiratory protective devices - SX gas filters and combined filters against specific named Compounds -Requirements, testing, marking
ONORM EN 371-1992 Respiratory protective devices - AX gas filters and combined filters against low boiling organic Compounds -Requirements, testing, marking

SE-SIS, breathing air filter box

SIS SS-EN 141-1990 Respiratory protective devices — Gas fil- ters and combined filters — Requirements, testing, marking
SIS SS-EN 371-1992 Respiratory protective devices — AX gas filters and combined filters against low boiling organic compounds — Requirements, testing, marking
SIS SS-EN 372-1992 Respiratory protective devices — SX gas filters and combined filters against specific named compounds — Requirements, testing, marking

International Organization for Standardization (ISO), breathing air filter box

ISO 17420-5:2021 Respiratory protective devices — Performance requirements — Part 5: Special application fire and rescue services - Supplied breathable gas RPD and filtering RPD
ISO 17420-6:2021 Respiratory protective devices - Performance requirements - Part 6: Special application escape - Filtering RPD and supplied breathable gas RPD
ISO 16900-8:2015 Respiratory protective devices - Methods of test and test equipment - Part 8: Measurement of RPD air flow rates of assisted filtering RPD
ISO 17420-7:2021 Respiratory protective devices - Performance requirements - Part 7: Special application marine, mining, welding, and abrasive blasting - Filtering RPD and supplied breathable gas RPD

NL-NEN, breathing air filter box

NEN-EN 372-1993 Respiratory protective devices. SX gas filters and combined filters against specific named compounds. Requirements, testing, marking
NEN-EN 371-1993 Respiratory protective devices. AX gas filters and combined filters against low boiling organic compounds. Requirements, testing, marking
NEN-EN 405-1993 Restpiratory protective devices. Valved filtering half masks to protect against gases or gases and particles. Requirements, testing, marking
NEN-EN 402-1993 Respiratory protective devices for self-contained open-circuit compressed air breathing apparatus with full face mask or mouthpiece assembly. Requirements, testing, marking

VN-TCVN, breathing air filter box

TCVN 3741-1982 Industrial filtering gas masks and respirators.Filter.Determination of protecting action time against gaseous toxic chemicals

CZ-CSN, breathing air filter box

CSN EN 372-1994 Respiratory protective devices-SX gas filters and combined filters against specific named compounds-Requirements,testing,marking
CSN EN 371-1994 Respiratory protective devices-AX gas filters and combined filters against low boiling organic compounds-Requirements,testing,marking

Standard Association of Australia （SAA）, breathing air filter box

AS/NZS 17420.6:2022 Respiratory protective devices — Performance requirements, Part 6: Special application escape — Filtering RPD and supplied breathable gas RPD (ISO 17420-6:2021, MOD)
AS/NZS ISO 16900.8:2021 Respiratory protective devices — Methods of test and test equipment, Method 8: Measurement of RPD air flow rates of assisted filtering RPD
AS/NZS 17420.7:2022 Respiratory protective devices — Performance requirements, Part 7: Special application marine, mining, welding, and abrasive blasting — Filtering RPD and supplied breathable gas RPD (ISO 17420-7:2021, MOD)

GOSTR, breathing air filter box

GOST 12.4.235-2019 Occupational safely standards system. Respiratory protective devices. Gas filters and combined filters. General technical requirements. Test methods. Marking
GOST R 58716-2019 Fire equipment. Fire filter respirators for the protection of human breath and eyes for use at natural fire extinguishing in open spaces. General technical requirements. Test methods
GOST ISO 16900-4-2020 Occupational safety standards system. Respiratory protective devices. Methods of test and test equipment. Part 4. Determination of gas capacity, internal migration/desorption of gas and combined filters using constant air flow and breakthrough time of fil

Korean Agency for Technology and Standards (KATS), breathing air filter box

KS I ISO 10473:2020 Ambient air — Measurement of the mass of particulate matter on a filter medium — Beta-ray absorption method
KS I ISO 9855-2005(2020) Ambient air－Determination of the particulate lead content of aerosols collected on filters(Atomic absorption spectrometric method)

KR-KS, breathing air filter box

KS I ISO 10473-2020 Ambient air — Measurement of the mass of particulate matter on a filter medium — Beta-ray absorption method

Canadian Standards Association (CSA), breathing air filter box

CSA N288.3.2-M85-CAN3-1985 High Efficiency Air-Cleaning Assemblies for Normal Operation of Nuclear Facilities First Edition; General Instruction No 1

ASHRAE - American Society of Heating@ Refrigerating and Air-Conditioning Engineers@ Inc., breathing air filter box

ASHRAE 4157-1998 Damper Control Characteristics and Mixing Effectiveness of an Air-Handling Unit Combination Mixing/Filter Box

Association of German Mechanical Engineers, breathing air filter box

VDI 2452 Blatt 3-1987 Gaseous air pollution measurement; measurement of fluoride ion concentration; sorption method with prepared silver balls and heated membrane filter