Industrial odor control Products and services
Odor control, grounded in measured data.
Explore deodorizing systems, measurement instruments, and professional services for factories, commercial kitchens, and other facilities. Start with your priority: treatment, measurement, or investigation.
- Projects supported
- 100,000+
- Odor control projects handled across industries since 1990.
- Odor database entries
- 400,000+
- Data behind our analysis and recommendations.
- Countries and regions with installations outside Japan
- 8
- Across Asia, from China and South Korea to Southeast Asia.
- Founded in Tokyo
- 1990
- More than three decades focused on air quality.
Where to begin
What is your odor challenge?
Choose what you need to do, then explore the relevant systems, instruments, and services.
How they work together
Different questions call for different tools.
A professional assessment helps identify the odor source and document conditions. Instruments help teams check or monitor changes during operation. Deodorizing systems and materials address the source or exhaust path. The appropriate approach depends on the odor source, operating conditions, and project stage.
- Investigate
- Identify the issue and document conditions before deciding on a response.
- Treat
- Compare deodorizing options against the odor source, airflow, and operating conditions.
- Measure
- Use instruments for indicative checks or ongoing trends. Sensor readings do not replace formal odor measurement.
Contact KARUMOA to confirm service availability and project scope for your location.
How a project runs
From first survey to after‑sales support.
KARUMOA handles odor projects from investigation to countermeasures. Odors are quantified with scientifically recognized methods, so targets and equipment choices are based on measured data.
Survey
Quantify the odor with scientifically recognized methods to establish an objective baseline.
Visualize
Map how the odor currently spreads using diffusion simulation, then draft a countermeasure plan.
Test on site
Verify the selected method against the actual odor before installation to reduce the risk of choosing the wrong equipment.
Design and install
Size the equipment to the site's discharge conditions, then measure the effect and make final adjustments after installation.
Support
Provide regular effectiveness measurements and maintenance after installation.
On-site services vary by location. We will confirm what can be provided for your project.
Explore the range
Systems, instruments, and services.
Review the options, then contact KARUMOA to confirm current specifications and suitability for your project.
Industrial deodorizers
Wet and dry systems across 10+ technologies, for factory exhaust, commercial kitchens, and indoor spaces.
ZeoGaiaA ceramic filter system for factory exhaust.Non-combustible ceramic · Low-carbonView product
NeoPlasLow-temperature plasma treatment for ducted industrial exhaust.Handles oil mist and dust-laden exhaustView product
ZeoGaia for kitchen exhaustCeramic filtration for commercial cooking exhaust.For garlic, spice, curry, and deep-frying odorsView application
Activated carbon filtersAdsorption-based treatment for HVAC and industrial exhaust.Multiple media types for different concentrationsView product
OzonizerOzone generators for odor control in rooms and buildings.Removes odors embedded in walls, floors, and materialsView product
Microgel deodorizerFragrance-free spray treatment for industrial exhaust.Polymer-based, fragrance-freeView product
Industrial deodorizing systemsCompare wet and dry treatment methods for industrial, kitchen, and indoor odors.Compare 10 systems, from wet scrubbers to plasma, ceramic, and combustionView systems
LevionOxygen cluster deodorizer for occupied indoor spaces, with wall, ceiling, and duct-mounted models.10,000+ units installedView catalog (PDF, 4 MB)
Odor measurement instruments
Developing odor sensors since 1991, with more than 2,000 units sold.
POLFAPortable instrument for checking odor trends in the field.375 g · Real-time display · CSV exportView instrument
LIMOSFixed-point system for ongoing odor monitoring.24/7 monitoring · Cloud dashboard · Threshold alertsView instrument
Odor sensor overviewCompare portable checks and fixed-point monitoring options.Compare instruments
Professional odor services
Consulting, measurement, and analysis by certified odor specialists.
Odor assessment serviceInvestigation to identify odor sources and plan countermeasures.Includes KaLmoS simulationView service
Odor index & concentration testingSensory testing to quantify odor strength.Conducted by certified odor assessorsView service
Odor component analysisInstrumental analysis to identify odor-related compounds.GC-MS · Testing for Japan's 22 specified offensive odor substancesAsk about this service
About KARUMOA
Odor control specialists in Japan since 1990.
Founded in Tokyo in 1990, KARUMOA has focused on air quality for more than three decades, from odor sensors and deodorizing systems to professional odor investigation. Projects are supported by more than 20 nationally qualified specialists.
- Company
- Karumoa Co., Ltd.
- Founded
- April 2, 1990
- Head office
- 2-9-5 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan
- Group company
- Subsidiary in Shanghai, China (established 2019)
- 1990
Founded in Nihonbashi, Tokyo.
- 1991
Launched the odor sensor business.
- 2001
Launched professional services, including odor surveys and deodorization work.
- 2004
Began odor control services for industrial plants.
- 2008
Expanded overseas, starting with China and South Korea.
- 2019
Established a subsidiary in Shanghai, China.
- 2020
Established the Overseas Market Development Department.
- 2022
Announced a cloud-connected version of the LIMOS fixed-point odor monitoring system.
Installations outside Japan
8 countries and regions
- China
- South Korea
- Thailand
- Vietnam
- Myanmar
- Singapore
- Indonesia
- Taiwan
Clients by sector
In Japan: government agencies and public bodies, construction, food and beverage, chemicals and pharmaceuticals, steel and metals, transport equipment, hotels, hospitals, and office and commercial buildings.
Overseas clients include automotive parts foundries, tire manufacturers, and food and pharmaceutical producers in China.
Research
- 2022The sensing mechanism of KARUMOA's POLFA odor sensor was adopted in a paper published by Japan's National Agriculture and Food Research Organization (NARO).
- 2023A paper by a KARUMOA staff member was published in the journal of the Society for Antibacterial and Antifungal Agents, Japan.
Match the response to the problem
- 01Odor sourceProcess · kitchen · facility
- 02Operating conditionsAirflow · temperature · space
- 03Next stepTreat · measure · investigate
Your project
Discuss your odor control project.
Share your country, facility type, odor source, approximate airflow (if known), and project stage. We'll discuss relevant options and confirm what support is available in your location.
Interested in becoming a KARUMOA partner or distributor outside Japan? Contact us about partnerships