Musty Odors or Moisture
Persistent musty odors, water damage, condensation, damp materials, visible staining, or concern about hidden mold growth.
Certified Industrial Hygiene and Indoor Environmental Testing
Air Quality Testing in NYC, Long Island, Westchester, New Jersey & Connecticut
Independent indoor air quality assessments, air sampling, odor investigations, ventilation evaluations, chemical vapor testing, mold air testing, particle measurements, dust testing, and industrial hygiene consulting.
- CIH and QEP professional oversight
- Independent testing and inspection
- Laboratory-supported analysis
- Clear written documentation
CIH & QEP OversightProfessional technical review
Scientific MethodsQualified laboratory support
Independent ConsultingNo cleanup contractor conflict
Written DocumentationClear findings and limitations
Independent indoor environmental consulting
Indoor Air Quality Testing Based on the Building and the Complaint
Angstrom Testing Services LLC provides independent indoor air quality testing, environmental inspections, air sampling, direct-reading measurements, laboratory analysis, and industrial hygiene consulting for homes, apartments, offices, schools, health care facilities, commercial buildings, property managers, attorneys, and facility owners.
Air quality testing may be used to evaluate musty or chemical odors, mold concerns, formaldehyde, volatile organic compounds, smoke, soot, particles, dust, allergens, bacteria, mercury vapor, ventilation concerns, HVAC-related complaints, and other indoor environmental conditions.
We provide testing, inspection, sampling, consulting, and reporting. We do not perform mold remediation, asbestos abatement, lead abatement, duct cleaning, restoration, or hazardous-material cleanup contracting.
This separation helps keep the assessment focused on the complaint, observed conditions, selected sample locations, measurement quality, laboratory results, project objective, and appropriate limitations.
Common indoor environmental concerns
When Air Quality Testing May Be Useful
Chemical Odors or VOCs
New flooring, cabinets, furniture, paint, adhesives, cleaning products, solvents, fragrances, pesticides, or unexplained chemical odors.
Dust and Particle Complaints
Renovation dust, construction dust, particles from HVAC systems, soot, smoke residue, debris, allergens, or recurring settled dust.
Stale Air or Ventilation
Stuffiness, elevated carbon dioxide, limited outdoor air, sealed windows, crowded rooms, uneven airflow, or concerns about HVAC operation.
Smoke and Odor Migration
Tobacco smoke, cannabis smoke, fire smoke, soot, nicotine residue, odors entering from adjoining spaces, or pressure-related migration.
Building-Related Complaints
Complaints associated with particular rooms, work periods, HVAC cycles, occupancy patterns, recent renovations, or recurring building conditions.
Post-Cleanup Verification
Documentation after mold remediation, smoke cleaning, dust cleanup, HVAC cleaning, source removal, ventilation changes, or corrective work.
Legal or Property Documentation
Testing for tenants, property managers, building owners, attorneys, insurers, schools, facilities, real estate matters, or due diligence.
Available testing approaches
Types of Indoor Air Quality Testing We Perform
Testing is selected for the suspected pollutant, source, property type, building conditions, analytical sensitivity, and intended use of the findings. Not every project requires every test shown below.
Mold Air Testing
Indoor and outdoor air samples may be collected to evaluate airborne mold spores and help interpret indoor mold conditions at the time of sampling.
View mold testingFormaldehyde & VOC Testing
Air samples may be collected for formaldehyde, volatile organic compounds, solvents, chemical vapors, material emissions, and odor concerns.
View formaldehyde and VOC testingParticle Measurements
Direct-reading particle measurements may be used to evaluate PM1, PM2.5, PM10, airborne dust patterns, filtration, smoke, or activity-related changes.
Ventilation & Carbon Dioxide
Spot measurements or data logging may help evaluate occupancy, outdoor-air ventilation, stale-air complaints, and changes during HVAC operation.
Read about CO₂ and ventilationOdor Investigations
Odor assessments may combine inspection, source tracking, direct-reading instruments, ventilation observations, targeted samples, and building-history review.
Smoke, Soot & Nicotine
Testing may evaluate fire smoke, soot, tobacco smoke, cannabis smoke, nicotine residue, THC residue, odor migration, or related settled contamination.
Read about thirdhand smokeDust Allergen Testing
Selected settled-dust samples may be analyzed for dust mite, pet, cockroach, or other allergens when the project objective supports targeted testing.
Read about dust allergensBacteria and Biological Testing
Air, surface, dust, or water-related samples may be collected for bacteria or other biological contamination concerns when a suitable method is available.
View bacteria testingMercury Vapor Testing
Direct-reading assessment or laboratory air sampling using NIOSH Method 6009 may be used for spills, damaged instruments, or post-cleanup documentation.
View mercury vapor testingHVAC Assessment
Accessible air handlers, fan coils, filters, coils, blower compartments, condensate pans, duct liner, registers, and air pathways may be reviewed.
View HVAC mold assessmentSilica and Construction Dust
Air or settled-dust samples may be collected for crystalline silica, construction dust, concrete cutting, masonry, renovation, or workplace exposure concerns.
View silica testingIndustrial Hygiene Sampling
Project-specific exposure assessment may involve lead, asbestos, silica, chemical agents, metals, vapors, dust, or other occupational hazards.
Field and laboratory components
What an Indoor Air Quality Assessment May Include
Site History and Complaint Review
Property type, affected rooms, timing, odors, water damage, renovations, HVAC operation, occupancy, symptom patterns, previous testing, and project objectives.
Visual and Moisture Observations
Accessible areas may be reviewed for water damage, staining, dust, visible growth, condensation, material deterioration, odors, and potential pollutant sources.
Direct-Reading Measurements
Depending on the scope, measurements may include particles, carbon dioxide, carbon monoxide, temperature, relative humidity, VOC screening, or other parameters.
Targeted Environmental Samples
Air, surface, dust, water, or material samples may be collected using media, durations, flow rates, and methods appropriate to the target pollutant.
Laboratory Analysis
Samples are submitted to an appropriate laboratory with suitable analytical capability, reporting limits, quality-control procedures, and documentation.
Interpretation and Reporting
Results are reviewed with field observations, sample locations, comparison samples, operating conditions, applicable guidance, and the intended use of the findings.
Inspection, measurement and documentation
Air Testing Works Best When It Is Connected to Building Conditions
Common investigation categories
Indoor Air Quality Concerns Often Involve More Than One Factor
Mold, Moisture and Biological Air Quality
Mold-related complaints may involve water damage, hidden dampness, HVAC conditions, dust reservoirs, visible staining, musty odors, or airborne spores. Testing may include visual observations, moisture measurements, mold air samples, surface samples, dust samples, or review of accessible HVAC components.
Chemical Odors, Formaldehyde and VOCs
Chemical odor concerns may involve new cabinets, furniture, flooring, paint, adhesives, cleaning products, pesticides, solvents, smoke, fragrance products, nearby work, or vapor migration. Testing may involve direct-reading screening, passive badges, sorbent tubes, canisters, or other methods selected for the target.
Dust, Particles, Smoke and Settled Residue
Dust complaints may involve renovation debris, construction dust, crystalline silica, lead dust, asbestos structures, soot, smoke residue, combustion particles, HVAC debris, allergens, or tracked contamination. Direct-reading particle measurements cannot identify composition, so targeted laboratory samples may also be needed.
Ventilation, Carbon Dioxide and HVAC Operation
Ventilation complaints may involve outdoor-air supply, occupancy, sealed windows, fan schedules, filter condition, air distribution, room pressure, temperature, relative humidity, carbon dioxide, exhaust systems, or changes during occupied periods. Measurements should be interpreted with the building use and HVAC operating conditions.
Assessment process
How an Indoor Air Quality Assessment Works
Review the Concern
We review the property type, complaint history, affected areas, odors, moisture, renovations, HVAC conditions, occupancy, and testing objective.
Develop the Scope
Instruments, samples, locations, durations, laboratories, comparison samples, and reporting needs are selected for the suspected condition.
Inspect and Measure
Accessible areas are reviewed and direct-reading measurements, moisture observations, HVAC observations, or targeted samples are collected when appropriate.
Analyze the Samples
Samples requiring analysis are submitted to laboratories selected for the method, target compounds, reporting limits, and project requirements.
Interpret the Findings
Field observations and analytical results are reviewed with the sample locations, comparison data, building operation, and intended use of the assessment.
Provide Documentation
A written summary, letter, or report is provided according to the agreed scope, including findings, limitations, and recommended next steps when warranted.
Project deliverables
What You May Receive After Air Quality Testing
Concern and Scope ReviewDescription of the complaint, property, affected areas, suspected sources, relevant history, and the objective of the assessment.
Field ObservationsAccessible building, moisture, HVAC, odor, dust, source, temperature, humidity, and ventilation observations relevant to the scope.
Sampling DocumentationSample IDs, locations, media, methods, measurement conditions, durations, flow rates, comparison samples, and related field information.
Laboratory ResultsAnalytical reports, concentrations, reporting limits, detected compounds, quality-control information, and laboratory notes when samples are collected.
Professional InterpretationReview of the findings in relation to the sampled locations, field observations, comparison data, applicable guidance, and project objective.
Written RecommendationsRecommended source evaluation, ventilation review, cleaning, repair, additional sampling, specialist involvement, or other next steps when warranted.
Important limitations
What Air Quality Testing Can and Cannot Establish
Indoor air quality measurements and samples represent selected locations and conditions during the assessment. Results may change with ventilation, weather, HVAC operation, occupancy, cleaning, source activity, moisture, renovation work, open doors or windows, temperature, and other building conditions.
A low or non-detect result in one sample does not prove that a pollutant is absent from every room, material, HVAC component, concealed area, or operating condition. Results should not be interpreted as a building-wide guarantee unless the sampling plan was specifically designed for that purpose.
Direct-reading instruments may provide valuable screening or time-pattern information, but they do not always identify individual compounds or particle composition. Laboratory samples may be needed when specific contaminants must be identified or quantified.
Environmental testing does not diagnose illness or determine whether a particular exposure caused a medical condition. Health concerns should be discussed with an appropriate health care professional or public-health agency.
Official indoor air quality resources
Government Guidance for Indoor Air Quality and Building Investigations
The following official resources provide general information about indoor pollutants, ventilation, workplace complaints, building investigations, construction-related indoor environmental quality, and New York State indoor-air topics.
EPAIndoor Air Quality
Federal information about indoor pollutants, source control, ventilation, filtration, healthy buildings, and indoor air quality science.
Open EPA resource EPAIndoor Pollutants and SourcesEPA information on pollutant sources that release gases, particles, biological materials, combustion products, and other contaminants indoors.
Open EPA resource EPA / NIOSHBuilding Air Quality GuidePractical guidance for building owners and facility managers concerning prevention, identification, investigation, and resolution of IAQ problems.
Open building guide OSHAWorkplace Indoor Air QualityOSHA information about ventilation, building care, common workplace IAQ complaints, applicable standards, and employer resources.
Open OSHA resource OSHAIndoor Air Quality Investigation GuidanceTechnical Manual information covering investigation approaches, building factors, contaminants, ventilation, measurements, and sampling considerations.
Open OSHA technical guidance CDC / NIOSHIEQ During Construction and RenovationRecommendations addressing dust control, high-emission materials, communication, and indoor environmental quality during occupied construction.
Open NIOSH resource NYSDOHNew York Indoor Air ResourcesNew York State information concerning indoor air, pollutants, schools, smoke, carbon monoxide, mold, radon, and other indoor environmental concerns.
Open NYSDOH resource NYSDOHIndoor Air Quality in SchoolsNew York State guidance on school indoor-air factors, source control, ventilation, filtration, moisture, maintenance, and occupant communication.
Open school IAQ guidanceExternal links are provided for public information. Their inclusion does not imply that any government agency endorses, certifies, or is affiliated with Angstrom Testing Services LLC. Guidance must be applied to the specific project objective, property type, method, and jurisdiction.
Related environmental testing services
Related Services for Indoor Environmental Concerns
Regional service coverage
Indoor Air Quality Testing Service Areas
Angstrom provides indoor air quality testing and industrial hygiene consulting throughout New York City, Long Island, Westchester, southern Connecticut, eastern New Jersey, and nearby communities. Availability depends on the project type, urgency, equipment, laboratory schedule, access, and requested turnaround.
Long Island OfficeRockville Centre, NY
Serving Nassau County, Suffolk County, Queens, and nearby Long Island communities.
View Rockville Centre location New York City OfficePark Avenue, ManhattanServing Manhattan and residential, commercial, and institutional properties throughout all five New York City boroughs.
View Manhattan location Westchester OfficeWhite Plains, NYServing White Plains and communities throughout lower, central, and northern Westchester.
View White Plains locationIndoor air quality articles
Related Articles and Building Guidance
Ventilation and CO₂Carbon Dioxide Levels and Cognitive Reasoning
How carbon dioxide measurements can help document occupancy and ventilation patterns without serving as a universal indoor-air-quality score.
Read article Building ComplaintsSick Building Syndrome and Indoor Air QualityBuilding-related complaints involving ventilation, odors, moisture, HVAC operation, pollutants, comfort, and recurring occupant concerns.
Read article Chemical VaporsFormaldehyde Testing and Indoor SourcesFormaldehyde concerns involving cabinetry, composite wood, furnishings, new materials, renovation products, and ventilation.
Read article Smoke ResidueThirdhand Smoke and Chemical Residue TestingHow nicotine and other smoke-related residues can remain on surfaces, contents, and materials after active smoking has stopped.
Read article Allergens and DustDust Allergens in Homes and Occupied BuildingsDust mite, pet, mold, pollen, and insect allergens in carpeting, upholstered furniture, bedding, and settled dust reservoirs.
Read article HVAC SystemsAir Duct Cleaning and HVAC ContaminationWhen HVAC dust, liner, coils, blower components, moisture, or contamination may require inspection before cleaning decisions.
Read article Combustion and ParticlesCarbon Monoxide and Particle ConcernsGeneral information about carbon monoxide, combustion sources, particulate matter, measurement, and indoor-air considerations.
Read article Mold and MoistureWhy Get a Professional Mold Inspection?How visual inspection, moisture measurements, targeted sampling, and building review differ from relying only on simple test kits.
Read articleIndoor air quality FAQs
Frequently Asked Questions
What does indoor air quality testing include?
Depending on the concern, testing may include a complaint and building-history review, visual inspection, moisture measurements, HVAC observations, air samples, surface samples, dust samples, direct-reading measurements, laboratory analysis, photographs, and a written report.
Can one air sample test for everything?
No. Different pollutants require different methods. Mold spores, formaldehyde, VOCs, particles, asbestos, silica, mercury vapor, bacteria, carbon monoxide, and allergens are not all measured by one universal sample. The scope should be selected for the suspected source and project objective.
Can testing identify the source of an odor?
Testing can help evaluate possible sources, but odor investigations often require a combination of inspection, odor observations, source tracking, direct-reading measurements, targeted samples, HVAC review, pressure relationships, and building history. Intermittent odors may not be present during the inspection.
Do you test for mold in the air?
Yes. Indoor mold air samples may be collected and compared with an outdoor baseline when appropriate. Surface samples, dust samples, moisture measurements, and building observations may also be useful depending on the complaint and suspected source.
Do you test for formaldehyde and VOCs?
Yes. Angstrom provides formaldehyde and VOC air testing for chemical odors, new cabinets, furniture, flooring, paint, adhesives, renovation materials, smoke, solvents, fragrances, and other vapor concerns.
Can carbon dioxide tell me whether the air is safe?
Carbon dioxide can be useful as a ventilation-related indicator when interpreted with occupancy, outdoor air, HVAC operation, time, and room use. It does not measure mold, formaldehyde, VOCs, particles, allergens, smoke, or every other indoor contaminant.
Do you perform remediation, duct cleaning, or cleanup?
No. Angstrom provides independent testing, inspection, sampling, consulting, laboratory coordination, and reporting. We do not perform remediation, asbestos abatement, lead abatement, duct cleaning, restoration, or cleanup contracting.
Will I receive a written report?
Yes, when included in the agreed scope. Documentation may include observations, sampling methods, sample locations, field conditions, laboratory results, interpretation, limitations, photographs, and recommended next steps.
What areas do you serve?
Angstrom provides indoor air quality testing in New York City, Long Island, Westchester, southern Connecticut, eastern New Jersey, and nearby areas. Availability depends on the project scope, urgency, required equipment, laboratory schedule, access, and requested turnaround.
Discuss the building or air-quality concern
Request Independent Air Quality Testing
Describe the property type, location, affected rooms, odor or complaint, moisture history, HVAC conditions, recent renovation, suspected source, previous testing, and the type of documentation you need.
