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UV Instrument Stability
UV Instrument Stability, Total:133 items.
In the international standard classification, UV Instrument Stability involves: Paints and varnishes, Optical equipment, Components and accessories for telecommunications equipment, Materials for aerospace construction, Plastics, Sacks. Bags, Protective equipment, Lubricants, industrial oils and related products, Laboratory medicine, Environmental testing, Metrology and measurement in general, Standardization. General rules, Rectifiers. Convertors. Stabilized power supply, Analytical chemistry, Nuclear energy engineering, Applications of information technology, Road engineering, Mechanical testing, Vocabularies, Protection of and in buildings, Characteristics and design of machines, apparatus, equipment, Road vehicle systems, Heat treatment, Test conditions and procedures in general, Non-destructive testing, Surface treatment and coating.
GM North America, UV Instrument Stability
- GMP.ABS.010-1990 ABS - Medium Heat Resistant, UV Stabilized Revision A
- GM GMP.ABS.016-1991 ABS - High Impact, UV Stabilized
- GM GMP.PP.002-1994 Polypropylene - Heat Stabilized, UV Stabilized, Impact Modified
- GM GMP.TPU.028-2002 TPU - UV Stabilized, Heat Stabilized, Castable Powder
- GM GMP.PVC.038-2003 PVC Liquid Castable, Flexible Skin, UV Stabilized
- GM GMP.PA66.079-1999 Nylon 66 - UV Stabilized, High Impact Modified, Heat Stabilized
- GM GMP.PA6.026-1997 Nylon 6 - 30% Glass Fiber Reinforced, UV Stabilized, Impact Modified, Heat Stabilized, Reduced Moisture
- GM GMP.E/P.096-2004 Polyolefin Alloy - MPa Flex Mod, UV Stabilized, High Flow
- GM GMP.PA66.079-2012 NYLON 66 - UV STABILIZED, HIGH IMPACT MODIFIED, HEAT STABILIZED (Issue 3; Do Not Use on New Programs; Replaced by GMW16558)
- GMP.PP.002-2011 Polypropylene ?Heat Stabilized, UV Stabilized, Impact Modified Issue 7; Do Not Use on New Programs; Replaced by GMW16208
- GM GMP.ABS+PC.019-2012 ABS + PC - UV Stabilized, Impact Modified (Issue 2; Do Not Use on New Programs; No Replacement)
- GM GMP.TES.004-2002 Thermoplastic Elastomer - Styrene Block Copolymer, Shore A73, Interior, UV Stabilized, Integrally Colored
- GM GMP.TES.003-2002 Thermoplastic Elastomer - Styrene Block Copolymer, Shore A73, Interior, Non-UV Stabilized
- GM GMP.TES.005-2002 Thermoplastic Elastomer Styrene Block Copolymer, Shore A59, Interior, Non-UV Stable
- GMP.PMMA.002-2010 Acrylic - Ultraviolet Stabilized, Medium High Heat Resistant Issue 2; Do Not Use on New Programs; Replaced by GMW16335
- GMP.PVC.038-2011 PVC ?Liquid Castable, Flexible Skin, UV Stabilized Issue 3; Do Not Use on New Programs; Replaced by GMW16081
- GM GMP.PP.037-2011 Polypropylene - Copolymer, UV Stabilized, High Impact, Injection Molding Grade (Issue 5; Do Not Use on New Programs; Replaced by GMW16208)
GM Global, UV Instrument Stability
- GMW 16948-2013 Polyamide 6 - Heat Stabilized, Impact Modified, UV Stabilized Issue 1; English
(U.S.) Ford Automotive Standards, UV Instrument Stability
- FORD FLTM BO 114-03-2001 ULTRAVIOLET STABILITY OF AUTOMOTIVE SAFETY GLASS
- FORD FLTM BO 114-3-2001 ULTRAVIOLET STABILITY OF AUTOMOTIVE SAFETY GLASS
- FORD WSS-M4D713-A8-2021 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO), 5% WOLLASTONITE FILLED, COLOR PIGMENTED, UV STABILIZED, EXTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD ESB-M4D404-A-1990 THERMOPLASTIC POLYOLEFIN, ELASTOMER AND GLASS FIBER MODIFIED, MOLDING COMPOUND, INTERIOR GRADE, COLOR PIGMENTED, UV STABILIZED
- FORD WSS-M4D703-B2-2014 POLYAMIDE (PA) 66, IMPACT MODIFIED, HEAT STABILIZED, UV STABILIZED 35% GLASS FIBER REINFORCED, MOLDING COMPOUND, INTERIOR *** TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D713-A9-2008 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO) 12% GLASS FILLED, COLOR PIGMENTED, UV STABILIZED, EXTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D865-B3-2013 POLYPROPYLENE (PP) 40% LONG GLASS FIBER REINFORCED, STRUCTURAL, NON UV-STABLE ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D865-B8-2013 POLYPROPYLENE (PP) 30% LONG GLASS FIBER REINFORCED, STRUCTURAL, NON UV-STABLE ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D865-B8-2014 POLYPROPYLENE (PP) 30% LONG GLASS FIBER REINFORCED, STRUCTURAL, NON UV-STABLE ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D871-A5-2021 POLYVINYL CHLORIDE (PVC), FLEXIBLE, 65A DUROMETER HARDNESS, INTERIOR, LOW GLOSS, UV STABILIZED ***TO BE USED WITH FORD M99P1111-A***
- FORD WSS-M4D713-A9-2021 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO) 12% GLASS FILLED, COLOR PIGMENTED, UV STABILIZED, EXTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D865-B7-2013 POLYPROPYLENE (PP) 20% LONG GLASS FIBER REINFORCED, STRUCTURAL, NON UV-STABLE, INTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D865-B1-2013 POLYPROPYLENE (PP) 40% LONG GLASS FIBER REINFORCED, GENERAL PURPOSE, STRUCTURAL, NON UV-STABLE ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D865-B4-2013 POLYPROPYLENE (PP) 30% LONG GLASS FIBER REINFORCED, STRUCTURAL, NON UV-STABLE, INTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D1057-A1-2021 THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO), 24% MINERAL FILLED, MOLD IN COLOR, HIGH IMPACT, UV STABILIZED, MOLDING COMPOUND, EXTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D713-A6-2008 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO) 9 % GLASS FILLED, COLOR PIGMENTED, UV STABILIZED, EXTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D713-A8-2007 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO), 5% WOLLASTONITE FILLED, COLOR PIGMENTED, UV STABILIZED, EXTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D865-B3-2012 POLYPROPYLENE (PP) 40% LONG GLASS FIBER (9-13 mm) REINFORCED, STRUCTURAL, NON UV-STABLE ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD ESB-M4D404-A-2009 THERMOPLASTIC POLYOLEFIN, ELASTOMER AND GLASS FIBER MODIFIED, MOLDING COMPOUND, INTERIOR GRADE, COLOR PIGMENTED, UV STABILIZED ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD ESB-M4D570-A2-2006 THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO), EXTRUSION GRADE, EXTERIOR, UV STABILIZED***TO BE USED WITH FORD WSS-M99P1111-A*** (Shown on ESB-M4D570-A1; Use WSS-M2D382-B1)
- FORD WSS-M4D952-A2-2006 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO), UNFILLED MOLDING COMPOUND, UV STABILIZED, MOLD-IN-COLOR, PARTIALLY PAINTED, EXTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M5B280-C4-2007 PRIMER, GLASS, SILANE, ONE STEP INCREASED UV STABILITY ***TO BE USED WITH FORD WSS-M99P1111-A*** (SHOWN ON WSB-M5B280-C)
- FORD WSS-M4D865-B1-2012 POLYPROPYLENE (PP) 40% LONG GLASS FIBER (9-13 mm) REINFORCED, GENERAL PURPOSE, STRUCTURAL, NON UV-STABLE ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D995-A-2005 THERMOPLASTIC POLYOLEFIN (TEO) MOLDING COMPOUND, COLOR PIGMENTED, UV STABILIZED, FOR HIGH GLOSS (CLASS "B") MOLDED IN-COLOR APPLICATIONS, EXTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D961-A1-2006 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO), COLOR PIGMENTED, UV STABILIZED, HIGH MELT FLOW, FOR MOLDED-IN-COLOR AND PARTIALLY PAINTED APPLICATIONS, EXTERIOR - ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D638-C2-2006 POLYPROPYLENE (PP) MOLDING COMPOUND, COLOR PIGMENTED, LOW GLOSS, UV STABILIZED, INTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A*** (Use WSS-M4D638-C)
- FORD WSS-M4D865-B4-2012 POLYPROPYLENE (PP) 30% LONG GLASS FIBER (9-13 mm) REINFORCED, STRUCTURAL, NON UV-STABLE, INTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D713-A5-2006 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO), 9 % GLASS FILLED, COLOR PIGMENTED, UV STABILIZED, EXTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A*** (Use WSS-M4D713-A6 AND WSS-M4D713-A8)
- FORD WSS-M4D871-A5-2006 POLYVINYL CHLORIDE (PVC), FLEXIBLE, 65A DUROMETER HARDNESS, INTERIOR, LOW GLOSS, UV STABILIZED **TO BE USED WITH FORD M99P1111-A***
- FORD WSS-M4D865-B7-2012 POLYPROPYLENE (PP) 20% LONG GLASS FIBER (9-13 mm) REINFORCED, STRUCTURAL, NON UV-STABLE, INTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD ESB-M4D570-A1-2006 THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO) ESB-M4D570-A1 INJECTION MOLDING GRADE - EXTERIOR - UV STABILIZED***TO BE USED WITH FOED WSS-M99P1111-A*** (Use WSS-M4D952-A2)
- FORD WSS-M2G316-B4-2008 ADHESIVE, MOISTURE CURING URETHANE, ONE COMPONENT, PRIMERLESS CLEARCOAT, INCREASED UV-STABILITY ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D865-B5-2014 POLYPROPYLENE (PP) 20% LONG GLASS FIBER (9-13 mm) REINFORCED, STRUCTURAL, MOLDED IN COLOR, UV STABLE, INTERIOR ***TO BE USED WITH FORD WSS-M99P1111-A***
- FORD WSS-M4D961-A3-2010 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO), COLOR PIGMENTED, UV STABILIZED, HIGH MELT FLOW, LOW CLTE, FOR MOLDED-IN-COLOR AND FULLY-PAINTED APPLICATIONS, EXTERIOR *** TO BE USED WITH FORD WSS-M99P1111-A ***
中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会, UV Instrument Stability
- GB/T 33327-2016 Ultraviolet curable coatings—Assessment of the storage stability
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, UV Instrument Stability
- GB/T 15489.8-1995 Colour filter glass test methods Resistance UV irradiating stability
British Standards Institution (BSI), UV Instrument Stability
- BS IEC 61196-1-212:2021 Coaxial communication cables. Environmental test methods. UV stability
- 20/30422444 DC BS IEC 61196-1-212. Coaxial communication cables. Part 1-212. Environmental test methods. UV stability
RU-GOST R, UV Instrument Stability
- GOST R 25645.338-1996 Polymeric materials for space technique. Requirements for ultraviolet radiation stability tests
- GOST 12.4.126-1983 Occupational safety standards system. Fabrics and materials for welders working. Method for determination of safety and UF-resistance
- GOST 18136-1972 Oils. Method for determination of oxidation stability in a universal apparatus
- GOST R ISO 23640-2015 In vitro medical devices. Evaluation of stability of in vitro diagnostic reagents
- GOST R 8.658-2009 State system for ensuring the uniformity of measurements Instruments measuring the characteristics of ultraviolet radiation of solar bad Verification procedure
- GOST R 51368-1999 Climatic environment stability test methods for machines, instruments and other industrial products. Test for stability influence of temperature
- GOST 13371-1967 Instrument for determination of stability and corrosion of motor oil (type DK-NAMY)
- GOST 25804.3-1983 Atomic power station technological processes control system equipment. Durability, endurance, resistance requirements for hignest influental factor
- GOST R 55031-2012 Public roads and highways. Geosynthetic for road construction. Test method for determination of stability to ultra-violet radiation
- GOST R 51805-2001 Mechanical environment stability test methods for machines, instruments and other industrial products. Tests for influences of acceleration steady state
- GOST 18298-1979 Radioresistance of equipment, complete units and materials. Terms and definitions
- GOST 30630.1.10-2013 Mechanic environment stability test methods for machines, instruments and other industrial products. Bumps to enclosure of products
- GOST R 51804-2001 Environment, stability test methods for machines, instruments and other industrial products. Combined tests
- GOST 30630.1.1-1999 Mechanical environment stability test methods for machines, instruments and other industrial products. Determination of dynamic characteristics of structure
- GOST R 51802-2001 Aggressive and other special media stability test methods for machines, instruments and other industrial products
- GOST R 8.901-2015 State system for ensuring the uniformity of measurements. Instruments of measurement of characteristic of ultraviolet radiation for medical sources. Verification procedure
- GOST 30630.1.2-1999 Mechanical environment stability test methods for machines, instruments and other industrial products. Tests for influences of vibration
- GOST R 51368-2011 Climatic environment endurance test methods for machines, instruments and other industrial products. Test for stability influence of temperature
- GOST R 51369-1999 Climatic environment stability test methods machines, instruments and other industrial products. Test for influence of humidity
- GOST R 51371-1999 Mechanical environment stability test methods for machines, instruments and other industrial products. Test for influence of shocks
- GOST 25804.7-1983 Atomic power station technological processes control system equipment. Evaluation methods of meeting durability, endurance and resistance requirements for highest influental factors
- GOST R 51684-2000 Climatic environment stability test methods of machines, instruments and other industrial products. Test for low air pressure
- GOST R 51909-2002 Environment stability test methods for machines, instruments and other industrial products. Tests for transportation and storage
- GOST R 51370-1999 Climatic environment stability test methods for machines, instruments and other industrial products. Test for influence of solar radiation
- GOST R 52562-2006 Climatic environment stability test methods for machines, instruments and other industrial products. Test methods for water influence
- GOST 17535-1977 Metal high precision parts of devices. Dimension stabilisation by heat treatment. Typical technological processes
- GOST R 52561-2006 Mechanical environment stability test methods for machines, instruments and other industrial products. Test methods for influence of shocks by free fall, shocks by drop on account of topple, influence of rocking and prolonged pitches
- GOST 29019-1991 Vitreous and porcelain enamels. Apparatus for determination of resistance to hot detergent solutions used for washing textiles
ET-QSAE, UV Instrument Stability
WRC - Welding Research Council, UV Instrument Stability
- BULLETIN 7-1950 INSTRUMENTATION FOR THE EVALUATION OF THE STABILITY OF THE WELDING ARC
American Welding Society (AWS), UV Instrument Stability
- WRC 007:1950 Instrumentation for the Evaluation of the Stability of the Welding Arc
Standard Association of Australia （SAA）, UV Instrument Stability
- AS/NZS 3813:2016 Plastic monobloc chairs — Determination of strength and durability, stability, UV and weathering, and ignitability
BE-NBN, UV Instrument Stability
Danish Standards Foundation, UV Instrument Stability
International Electrotechnical Commission (IEC), UV Instrument Stability
- IEC 61196-1-212:2021 Coaxial communication cables - Part 1-212: Environmental test methods - UV stability
CZ-CSN, UV Instrument Stability
European Committee for Standardization (CEN), UV Instrument Stability
- EN ISO 23640:2013 In vitro diagnostic medical devices - Evaluation of stability of in vitro diagnostic reagents
- EN ISO 23640:2011 In vitro diagnostic medical devices - Evaluation of stability of in vitro diagnostic reagents [Superseded: CEN EN 13640]
- EN ISO 23640:2015 In vitro diagnostic medical devices - Evaluation of stability of in vitro diagnostic reagents (ISO 23640:2011)
American Society for Testing and Materials (ASTM), UV Instrument Stability
- ASTM D4871-00 Standard Guide for Universal Oxidation/Thermal Stability Test Apparatus
- ASTM D4871-06 Standard Guide for Universal Oxidation/Thermal Stability Test Apparatus
- ASTM D4871-11(2016) Standard Guide for Universal Oxidation/Thermal Stability Test Apparatus
- ASTM C518-17 Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
- ASTM D6625-13 Standard Practice for Conducting a Test of Protective Properties of Polish Applied to a Painted Panel Using Fluorescent UV-Condensation Light- and Water-Exposure Apparatus
Society of Automotive Engineers (SAE), UV Instrument Stability
- SAE AS397-1947 DIRECTION INDICATOR, NON-MAGNETIC, STABILIZED TYPE (Directional Gyro)
- SAE J2297-2011 Ultraviolet Leak Detection: Stability and Compatibility Criteria of Fluorescent Refrigerant Leak Detection Dyes for Mobile R-134a and R-1234yf (HFO-1234yf) Air- Conditioning Systems
- SAE J2297-2013 Ultraviolet Leak Detection: Stability and Compatibility Criteria of Fluorescent Refrigerant Leak Detection Dyes for Mobile R-134a and R-1234yf (HFO-1234yf) Air- Conditioning Systems
- SAE J2297-1996 Ultraviolet Leak Detection: Stability and Compatibility Criteria of Fluorescent Refrigerant Leak Detection Dyes for Mobile R-134a Air- Conditioning Systems, Standard September 1996
Korean Agency for Technology and Standards (KATS), UV Instrument Stability
- KS P ISO 23640:2019 In vitro diagnostic medical devices — Evaluation of stability of in vitro diagnostic reagents
- KS B ISO 9211-3:2001 Optics and optical instruments-Optical coatings-Part 3:Environmental durability
- KS B ISO 9211-3:2016 Optics and optical instruments－Optical coatings－Part 3：Environmental durability
KR-KS, UV Instrument Stability
- KS P ISO 23640-2019 In vitro diagnostic medical devices — Evaluation of stability of in vitro diagnostic reagents
German Institute for Standardization, UV Instrument Stability
- DIN EN ISO 23640:2015-12 In vitro diagnostic medical devices - Evaluation of stability of in vitro diagnostic reagents (ISO 23640:2011); German version EN ISO 23640:2015 / Note: DIN EN ISO 23640 (2013-09) remains valid alongside this standard until 2018-06-30.
- DIN 43743:1977 Stabilized supply apparatus for measurement; definitions, expression and testing of performance
- DIN 6855-4:2016-11 Constancy testing of nuclear medicine instruments - Part 4: Positron emission tomographs (PET)
- DIN 6855-11:2016-08 Constancy testing of nuclear medicine instruments - Part 11: Radionuclide calibrators (IEC/TR 61948-4:2006, modified)
- DIN EN ISO 23640:2012 In vitro diagnostic medical devices - Evaluation of stability of in vitro diagnostic reagents (ISO 23640:2011); German version EN ISO 23640:2011
- DIN EN ISO 23640:2015 In vitro diagnostic medical devices - Evaluation of stability of in vitro diagnostic reagents (ISO 23640:2011); German version EN ISO 23640:2015
- DIN EN ISO 23640:2013 In vitro diagnostic medical devices - Evaluation of stability of in vitro diagnostic reagents (ISO 23640:2011); German version EN ISO 23640:2013
ES-UNE, UV Instrument Stability
- UNE-EN ISO 23640:2015 In vitro diagnostic medical devices - Evaluation of stability of in vitro diagnostic reagents (ISO 23640:2011)
Association Francaise de Normalisation, UV Instrument Stability
- NF EN ISO 23640:2015 Dispositifs médicaux de diagnostic in vitro - Évaluation de la stabilité des réactifs de diagnostic in vitro
- NF S92-032*NF EN ISO 23640:2015 In vitro diagnostic medical devices - Evaluation of stability of in vitro diagnostic reagents
- NF S92-032:2014 In vitro diagnostic medical devices - Evaluation of stability of in vitro diagnostic reagents
- NF S10-010:1995 Optics and optical instruments. Optical coatings. Part 3 : environmental durability.
国家药品监督管理局, UV Instrument Stability
- YY/T 1579-2018 In vitro diagnostic medical devices and in vitro diagnostic reagent stability evaluation
Professional Standard - Aviation, UV Instrument Stability
- HB 7097-1994 Minimum performance requirements for magnetically unstable direction indicators for civil aircraft
- HB 6678-1992 Minimum performance requirements for gyro-stabilized magnetic direction indicators for civil aircraft
- HB 7100-1994 Minimum performance requirements for gyro-stabilized non-magnetic direction indicators for civil aircraft
Taiwan Provincial Standard of the People's Republic of China, UV Instrument Stability
- CNS 5477-1980 Method of Test for Constancy of Mass on Ignition for Porcelain Laboratory Apparatus
AENOR, UV Instrument Stability
- UNE-EN ISO 23640:2013 In vitro diagnostic medical devices - Evaluation of stability of in vitro diagnostic reagents (ISO 23640:2011)
International Organization for Standardization (ISO), UV Instrument Stability
- ISO 9211-3:1994 Optics and optical instruments - Optical coatings - Part 3: Environmental durability
Group Standards of the People's Republic of China, UV Instrument Stability
- T/CSTM 00277.1-2022 Evaluation of stability for analytical instruments Part 1: Evaluation based on the precision of standard method
- T/CSTM 00277.1-2020 Evaluation of long-term stability for chemicalanalytical instruments- Part 1: Evaluation based on standard method
- T/CSTM 00277.2-2022 Evaluation of stability for analytical instruments Part 2: Evaluation based on the precision of intra-laboratory determination results
TR-TSE, UV Instrument Stability
- TS 3336-1979 THE CLASSIFICATION OF MATERIALS FOR THE INSULATION OF ELECTRICAL MACHINERY AND APPARATUS IN RELATION TO THEIR THERMAL STABILITY IN SERVICE
Professional Standard - Environmental Protection, UV Instrument Stability
- HJ 1045-2019 Technical requirements and testing methods for portable ultraviolet absorption measuring instruments for flue gas from stationary pollution sources (sulfur dioxide and nitrogen oxides)