Los métodos colorimétricos identifican de una manera mas o menos cuantitativa la presencia de un gas. Es posible usar Parches o Tubos colorimétricos.
Estos detectores son capaces de medir instantaneamente gases con Bajos Umbrales de Olor (BUO) tales como H2S, NH3 y otros.
PROGRESS s.r.l
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Sitio web: PROGRESS r.l
Short Description: Progress S.r.l.offers odour analysis through dynamic olfatometric analysis, electronic noses and chemical analysis. But they also simulate odour dispersion and offer environmental, legal and civil consulting service.
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Kitagawa
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Short Description: With over 300 types of precision gas detector tubes for applications including Occupational Health & Safety, Process Control and Indoor Air Quality Control.
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Dräger
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Short Description: The Draeger short-term detector tubes have proven to be a very cost-effective and reliable way to measure gases and vapors with low odour thresholds.
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Interscan
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Sitio web: Gas Detection
Short Description: the 4000 Series Compact Portable Analyzer of interscan is a high resolution monitor with a detection limit of 5 ppb according to the maker.
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APSA-370/CU-1 Ambient Hydrogen Sulfide Monitor
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Short Description: APSA-370/CU-1 Ambient H2S monitor measures SO2 converted H2S through oxidation catalyst based on Ultra Violet Fluorescence.
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MeasureStar®
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Sitio web: http://www.mtgruppen.no/produkter?start=5
Short Description: Portable measurement instrument for capture and transmission of H2S concentration in air, to be used in sewer systems, industries and public water and sewage systems
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OdaLog®
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Sitio web: http://www.odalog.com/
Short Description: The OdaLog® is a portable gas detector specifically designed for the wastewater industry, manufactured by App-Tek International Pty Ltd (Part of Thermo Fisher Scientific Australia).
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Arizona Instrument LLC
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Sitio web: http://www.azic.com/
Short Description: In contrast to other electronic detectors, the Jerome J605 is able of measuring H2S at ppb levels, where the odour threshold is. There are a few models such as J605 (Low-level H2S Analyzer), 631 and 651 (Fence-line Monitoring System).
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