VOC and OTM
Why VOC and OTM
Reliable environmental data compliant with EPA methods
Certified mixtures developed according to U.S. regulatory methods are the reference tool for advanced environmental analysis.
In an increasingly stringent regulatory framework, accurate and traceable calibration materials are essential to produce reliable data that can be compared internationally.
SIAD prepares EPA mixtures for VOCs and OTM mixtures for PFAS in air.
65
Up to 65 components without losing accuracy
EPA
Compliance with EPA methods TO-14A, TO-15, OTM-50
Stabilità
Stable and repeatable data over time
Complexity
Complexity without compromise
More components mean more variables to manage, and this is where SIAD makes the difference: EPA mixtures for VOCs reach up to 65 components at very low concentrations, down to 1 ppm, while maintaining guaranteed long-term stability that makes GC-MS system calibration and validation consistently reliable.
PFAS
PFAS specialists
Addressing emerging pollutants requires dedicated know-how: OTM mixtures for gas-phase PFAS are the result of multi-year compatibility and feasibility studies carried out by SIAD, and are offered as ultra-traceable formulations in treated cylinders, capable of managing reactivity and adsorption.
Guaranteed traceability
Guaranteed traceability
Every data point rests on a solid measurement chain: preparation and analysis follow ISO 6142 and ISO 6143 standards, with correlation to primary standards from metrology institutes, at the SIAD Special Gases Laboratory in Osio Sopra.
Certified mixtures for advanced environmental analysis
SIAD develops EPA and OTM mixtures according to U.S. Environmental Protection Agency protocols, used globally for air quality monitoring, industrial emissions control and research. Each mixture is produced to ensure analytical reliability throughout the entire measurement chain.
EPA mixtures for VOCs
Designed for TO-14A and TO-15 canister methods, they combine light and aromatic hydrocarbons, such as benzene, toluene and xylenes, chlorinated compounds such as dichloromethane and trichloroethylene, alkanes, alkenes and oxygenated compounds such as MTBE, up to 65 components at concentrations down to 1 ppm.
OTM mixtures for PFAS
Developed for OTM methods, including OTM-50, they bring together fluoroalkenes and fluoroalkanes, perfluorinated compounds, PFAS precursors such as fluorotelomers, and short- and long-chain fluorinated species, in ultra-traceable formulations and treated cylinders.
Analytical Assistance Service (SAA)
Completing the offer is dedicated technical support for gas analysis: on-site analyses, samples analysed at the SIAD Laboratory, verification of analyser functionality and consultancy on gas analytical instrumentation.
Contact us
Do you need certified EPA and OTM mixtures for your environmental analyses?
Our experts support you in choosing mixtures for VOCs and PFAS, with the metrological traceability and compliance with regulatory methods required for your monitoring activities.
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Mixtures, calibration and metrological traceability for compliant and comparable data
