Accredited Industrial Hygiene Testing Lab in Houston, TX
Houston's AIHA & NVLAP-accredited industrial hygiene testing lab with 100+ accredited analytical methods — from asbestos and silica to metals, VOCs, mercury, formaldehyde, isocyanates, PAH & PCB. PJLA DoD-ELAP accredited for Department of Defense projects. Rush same-day turnaround available.
Search a Test & Build Your Instant Quote
Type any analyte, chemical, or method below — e.g. benzene, silica, lead — to see the accredited method, sampling media & price, then add tests to your quote.
Testing Built Around How You Work
EHS & Safety Managers
Meet your OSHA deadline with defensible, accredited results — rush turnaround and local courier pickup.
See testing servicesIH & Environmental Consultants
Your reliable outsourced lab — volume pricing, a dedicated project manager, secure reporting, and fast rush. All performed in-house.
Partner with our labGovernment & Defense
DoD-ELAP-accredited (PJLA 71390-1) asbestos PLM & PCM for BRAC, military base and federal remediation projects, under ISO/IEC 17025.
Federal capabilitiesAccreditations & Certifications
Our industrial hygiene testing accreditations are independently audited and publicly verifiable — not just claimed. Click any certificate to download the official document.
Why EHS Managers Choose Our IH Testing Laboratory
Regulator-Ready Results
All analyses follow OSHA, NIOSH & EPA approved methodologies — defensible for citations, litigation, and compliance audits.
Rush TAT Available
Standard 7-day turnaround, with same-day, 1-day, 2-day & 3-day rush options. We won't slow down your safety response.
NVLAP + AIHA-LAP + PJLA Accredited
Three independent accreditation bodies. Lab Code 101793-0 (NVLAP) and Accreditation No. 71390-1 (PJLA) are publicly verifiable.
Certified Professionals
Our team includes experienced lab technicians and QA specialists dedicated to providing highly accurate, defensible industrial hygiene testing data.
Secure Online Portal
Access results, chain-of-custody records, and reports 24/7 — no phone tag, no waiting for emailed PDFs.
Sampling Media & Pumps
Sampling media kits and pump loaner program available — no need to source equipment from multiple vendors. As a full-service industrial hygiene lab, our IH lab handles everything under one roof.
Trusted Across the Texas Gulf Coast
Independently accredited, in-house since 2000, and built for fast, defensible results.
Independently accredited
AIHA-LAP, NVLAP, DoD-ELAP (asbestos) & ISO/IEC 17025 — every claim publicly verifiable.
Fast when it counts
Same-day & next-day rush, plus Gulf Coast courier pickup — results before your deadline.
100% in-house
Every method on our own instruments, by our own analysts — for fast, reliable turnaround.
Our Comprehensive Industrial Hygiene Testing Services
Our Houston industrial hygiene lab offers a full spectrum of accredited workplace analysis — from asbestos and mold testing to VOC, silica, and metals analysis — helping you identify workplace hazards, assess exposure risks, and ensure OSHA compliance through reliable, defensible testing.
Asbestos Testing & Fiber Analysis
Mold Testing
Crystalline Silica (RCS) Testing
Total & Respirable Dust Testing
VOC Testing — BTEX, TVOC & TO-15 Analysis
Solvents, Acids & Alkali Testing
Formaldehyde Testing
Isocyanate Testing
PAH Testing — Polynuclear Aromatic Hydrocarbons
PCB Testing — Polychlorinated Biphenyls
Metals in Air Testing
Welding Fume Testing
Lead Testing — Airborne Lead Analysis
Hexavalent Chromium (Cr VI) Testing
Indoor Air Quality (IAQ) Testing
Noise Dosimetry & Heat Stress Monitoring
100+ Accredited Industrial Hygiene Testing Methods
Our IH testing lab is accredited across 13 analytical platforms under ISO/IEC 17025 — one of the broadest IHLAP scopes among U.S. industrial hygiene testing laboratories. Every method is independently audited by AIHA.
GC/FID
~70 methodsHydrocarbons, solvents, alcohols, organic acids, acrylonitrile, amines, aldehydes, cresol/phenol, phthalates, PCBs, glycols
Ion Chromatography
11 methodsSO₂, Cl/Br, inorganic acids (HCl, HF, HNO₃, H₂SO₄, H₃PO₄), ozone, hexavalent chromium (OSHA ID-215), acetic acid
HPLC
7 methodsDiisocyanates (OSHA 42), aldehydes (EPA TO-11, NIOSH 2016, OSHA 64), PAHs (NIOSH 5506), formaldehyde (OSHA 1007)
ICP/AES
4 methods30+ elements — NIOSH 7300 Mod, 7303, 9100, OSHA 125G Mod for metals in air industrial hygiene testing
XRD
4 methodsCrystalline silica (quartz & cristobalite) — NIOSH 7500, OSHA ID-142 v4
CVAA
3 methodsMercury vapor — NIOSH 6009, OSHA ID-140, OSHA ID-145
GC/MS
2 methodsEPA 325B & TO-15 — volatile hydrocarbons, Summa canister VOC analysis
Gravimetric
2 methodsTotal dust (NIOSH 0500) & respirable dust (NIOSH 0600)
PCM & UV/VIS
2 methodsAsbestos fibers (NIOSH 7400) and ammonia (NIOSH 6015)
Full scope of accreditation available in our AIHA LAP certificate (LAP-101470). Contact us for method-specific questions.
Built to Carry Your Largest Contracts
Petrochemical turnarounds, federal & DoD environmental work, multi-site industrial programs, and consulting-firm overflow — the accredited scope, in-house capacity, and account support to be your primary lab.
Accredited & Audit-Ready
AIHA LAP-101470 (Industrial Hygiene & Environmental Microbiology) and ISO/IEC 17025:2017, backed by NVLAP 101793-0, PJLA DoD-ELAP 71390-1, TX DSHS #300529, and TX TDLR LAB1070 — the verifiable credential trail large owners, insurers, and procurement teams require.
100% In-House Capacity
No subcontracting or send-outs. High-volume batches stay under one roof and one chain of custody, with rush turnaround down to 1 business day when a contract deadline demands it.
Federal, DoD & BRAC Ready
Our AIHA LAP accreditation and ISO/IEC 17025 quality system support federal and BRAC data-quality requirements; PJLA DoD-ELAP (No. 71390-1) covers asbestos PLM (EPA 600/R-93/116) and PCM (NIOSH 7400) for military and federal facility projects.
Dedicated Project Manager
One PM owns your program end to end — kits, scheduling, priority handling, and reporting — so a multi-crew, multi-site contract never gets lost in a queue.
Standing Accounts & Volume Pricing
Reserved rush capacity, held sampling media and kits, consolidated invoicing, and volume discounts scaled to your monthly flow for ongoing compliance programs.
One Lab, Full Menu
Metals (ICP/AES), silica (XRD), asbestos (PLM/PCM), mold, dust, VOCs, formaldehyde, isocyanates, PAH, and PCB — consolidate an entire site’s exposure program on a single chain of custody.
Bidding a large or federal contract?
Set up a standing account for contract pricing, reserved capacity, and the accreditation documentation your submittals need — from our lab team, same day.
Request Contract Pricing (713) 453-6090Lab Turnaround & Rush Options
| Turnaround Option | Timeline | Surcharge |
|---|---|---|
| Standard Analysis | 7+ Business Days | No Surcharge |
| 4-Day Rush | 4 Business Days | +25% |
| 3-Day Rush | 3 Business Days | +50% |
| 2-Day Rush | 2 Business Days | +75% |
| 1-Day Rush | 1 Business Day | +100% |
Rush TAT Available For
- Asbestos — PLM, PCM
- Crystalline Silica (RCS) — XRD/IR
- Lead in Air — ICP-AES
- Metals Scan & Welding Fume
- Hexavalent Chromium (Cr VI)
- BTEX, TVOC & TO-15 VOCs
- Mold Analysis — Spore Trap, Culture, PCR
- Inorganic Chemicals
- Mercury Vapor — CVAA
- Formaldehyde & Aldehydes — HPLC
- Isocyanates (TDI/MDI/HDI)
- PAH — Polynuclear Aromatic Hydrocarbons
- PCB — Polychlorinated Biphenyls
Note: Unusable asbestos samples may incur additional prep fees. Bulk PLM layers billed individually.
Pricing & Project Estimates
Pricing depends on sample count, analysis type, and turnaround required. As a full-service IH testing lab, we keep pricing transparent. We provide itemized project estimates before you commit — no surprise invoices. Volume discounts are available for ongoing monitoring programs. Contact us with your scope and we'll respond with a detailed quote within one business day.
Request a Project EstimateKey OSHA / NIOSH Exposure Limits
Quick ReferenceAsbestos
0.1 f/cc TWA
OSHA PEL · NIOSH 7400
Crystalline Silica
0.05 mg/m³ TWA
OSHA PEL · NIOSH 7500
Lead in Air
50 µg/m³ TWA
OSHA PEL · NIOSH 7303
Chromium VI
5 µg/m³ TWA
OSHA PEL · OSHA ID-215
Benzene
1 ppm TWA
OSHA PEL · NIOSH 1501
Formaldehyde
0.75 ppm TWA
OSHA PEL · OSHA 1007
Mercury
0.1 mg/m³ C
OSHA Ceiling · NIOSH 6009
Toluene
200 ppm TWA
OSHA PEL · NIOSH 1501
Manganese
0.02 mg/m³ REL
NIOSH REL · NIOSH 7300
Ammonia
50 ppm TWA
OSHA PEL · NIOSH 6015
Isocyanates (TDI)
0.005 ppm TWA
OSHA PEL · OSHA 42
PAH (Coal Tar)
0.2 mg/m³ TWA
OSHA PEL · NIOSH 5506
PCBs (42% Cl)
1.0 mg/m³ TWA
OSHA PEL · NIOSH 5503
Reference values only. Always verify current OSHA/NIOSH standards for your specific applications. Contact AGT Labs for full compliance guidance.
How to Submit Samples
From field collection to final IH testing report — here's exactly how the process works so you're never left guessing.
Contact Your Project Manager
Call (713) 453-6090 or email info@agtlabs.com to discuss your project scope, choose the right sampling method, and confirm turnaround requirements.
Receive Sampling Media & Equipment
With 5 business days' notice, we ship sampling kits via UPS Ground directly to your site. A pump loaner program is available for qualifying clients.
Complete the Chain of Custody (COC)
Fill out and sign the COC form before shipping samples. The form is available in the download section below.
Ship or Drop Off Samples
Ship samples to our Houston lab or use our courier pickup service (Houston, Bay City, Freeport, Lake Jackson, Victoria, Harlingen). Samples received before 2:00 PM are logged same day.
Access Results Online
Results are uploaded to your secure online portal upon completion. Standard TAT is 7+ business days. Rush options from 1–4 days available.
Submit Samples or Get a Kit
Houston, TX 77029
Download and complete the Chain of Custody form before submitting samples.
Download COC Form (.xls)Questions? Email: info@agtlabs.com
From Sample to Report in 4 Steps
Consultation
Define scope, identify hazards, and select the right NIOSH/OSHA sampling method for your workplace.
Sampling
On-site collection using calibrated pumps, Summa canisters & passive media with full chain of custody.
Analysis
Rigorous analysis at our NVLAP & AIHA-LAP accredited Houston IH testing facility — no outsourcing, no delays.
Reporting
Regulator-ready reports comparing to OSHA PELs and NIOSH RELs, available on our secure online portal.
Industries Relying on Our Industrial Hygiene (IH) Testing
Manufacturing
Noise surveys, welding fumes, solvents, metals, and ergonomics assessments for plant-floor safety.
Construction
Silica dust, asbestos management, lead in paint, and heat stress monitoring for job-site compliance.
Healthcare & Labs
Chemical, anesthetic gas, and sterilization agent exposure assessments for clinical environments requiring industrial hygiene testing.
Energy & Utilities
Hydrocarbon BTEX, H₂S, and chemical exposure monitoring for refineries and power generation.
Government & Schools
IAQ investigations, asbestos surveys, and compliance programs through certified industrial hygiene testing.
Food & Beverage
Processing safety, cleaning chemical monitoring, and OSHA PEL compliance testing for food facilities.
Defense & Federal
DoD-ELAP accredited (PJLA #71390-1) asbestos IH testing for military base remediation, BRAC projects, and federal facility environmental compliance.
Industrial Hygiene Testing Guides
In-depth sampling guides and OSHA compliance references written by our IH lab team — covering methods, regulatory limits, and best practices for every test we offer.
Asbestos Bulk Sampling: PLM & PCM Analysis Guide
How to collect bulk building material specimens for PLM laboratory analysis — the first step in every pre-renovation asbestos investigation.
Read guide SilicaRespirable Crystalline Silica: Quartz, Cristobalite & XRD
XRD analysis methods, OSHA 1910.1053 Table 1 requirements, and sampling strategies for construction and manufacturing.
Read guide DustRespirable Dust Monitoring: NIOSH 0500 & 0600
Gravimetric sampling methods for total and respirable dust fractions, PEL compliance, and filter handling protocols.
Read guide VOC / BTEXBTEX Exposure Monitoring: NIOSH 1501 & OSHA 1028
Benzene, toluene, ethylbenzene, and xylene air sampling — charcoal tube methods, canister sampling, and regulatory limits.
Read guide MetalsMetals in Air Monitoring: NIOSH 7300 & 7303
ICP-AES multi-element scan methods for 30+ airborne metals — sampling media, digestion, and OSHA PEL comparison.
Read guide LeadLead Exposure Monitoring: Air, Paint & Wipe Sampling
Airborne lead via NIOSH 7303 (ICP-AES), plus paint and wipe sampling and OSHA 1910.1025 clearance levels.
Read guide Chromium VIHexavalent Chromium: Cr(VI) Air Monitoring & OSHA Compliance
OSHA ID-215 IC method, PVC filter sampling, refrigerated chain of custody, and OSHA 1910.1026 exposure limits.
Read guide Noise & HeatNoise & Heat Stress Monitoring: OSHA 1910.95 Guide
Personal noise dosimetry, WBGT heat stress assessment, equipment calibration, and hearing conservation program requirements.
Read guideFrequently Asked Questions
1. Where is your industrial hygiene testing laboratory located?
AGT Labs' main office is at 10200 East Freeway, Suite 101, Houston, TX 77029. We also operate service centers in Harlingen and the South Texas region.
2. Which asbestos test do I need — PLM or PCM?
PLM (Polarized Light Microscopy) identifies asbestos in bulk building materials and is the standard method for pre-renovation surveys. PCM (Phase Contrast Microscopy) measures airborne fiber concentrations during abatement and clearance monitoring. AGT Labs is NVLAP-accredited for both methods.
3. How long does mold testing take?
Standard non-viable spore trap mold analysis completes in 7 business days. Viable culture testing (which grows the mold to confirm species) requires longer incubation. Rush options are available: 1-day (100% surcharge), 2-day (75%), 3-day (50%), or 4-day (25%). Our lab holds Texas TDLR Mold License LAB1070 and is AIHA EMLAP-accredited. We recommend collecting a concurrent outdoor sample so indoor counts can be compared against the outdoor baseline. Coordinate pickup with your Project Manager at (713) 453-6090.
4. What is the standard turnaround time for industrial hygiene testing?
Standard analyses complete in 7+ business days. Rush options from 1-day to 4-day are available per project estimate.
5. What rush options do you offer?
- 1 Business Day: 100% surcharge
- 2 Business Days: 75% surcharge
- 3 Business Days: 50% surcharge
- 4 Business Days: 25% surcharge
Note: Unusable asbestos samples may incur additional prep fees. Bulk PLM layers billed individually.
6. What is VOC testing and when do I need it?
VOC (Volatile Organic Compound) testing measures airborne chemicals like benzene, toluene, and formaldehyde in workplace air. You need VOC testing for OSHA compliance in refineries, chemical plants, painting operations, and indoor air quality investigations. AGT Labs performs BTEX, TVOC, and EPA TO-15 canister analysis.
7. What is the difference between total and respirable dust testing?
Total dust captures all airborne particles regardless of size. Respirable dust captures only particles small enough to reach the deep lung (typically under 4 micrometers). OSHA sets separate PELs for each fraction. Both are measured gravimetrically using personal air sampling pumps and pre-weighed filters.
8. Which OSHA standards do your industrial hygiene testing methods cover?
Our lab covers OSHA 1910.1001 (Asbestos), 1910.1053 (Silica), 1910.1025 (Lead), 1910.1026 (Chromium VI), 1910.95 (Noise), and EPA AHERA/NESHAP. Contact us to confirm method coverage for your specific application.
9. How do I verify your accreditations?
All accreditations are independently verifiable:
| Accreditation | Number | Verify At |
|---|---|---|
| NVLAP | Lab Code 101793-0 | nist.gov/nvlap |
| PJLA / DoD-ELAP | Accrdn. No. 71390-1 | pjlabs.com |
| Texas TDLR Mold License | LAB1070 | tdlr.texas.gov |
10. Do you provide pricing before I commit?
Yes. We provide a detailed itemized estimate before any work begins. Simply contact your Project Manager with your sample count, analysis type, and required turnaround. Volume discounts are available for ongoing monitoring programs.
11. Do you test for mercury in workplace air?
Yes. Our IH lab is AIHA IHLAP-accredited (LAP-101470) for mercury vapor analysis using three methods: NIOSH 6009, OSHA ID-140, and OSHA ID-145 — all performed by Cold Vapor Atomic Absorption (CVAA). Mercury IH testing is critical for chlor-alkali plants, dental offices, fluorescent lamp recycling, and thermometer manufacturing facilities. The OSHA ceiling limit is 0.1 mg/m³. Rush turnaround is available.
12. Can you analyze formaldehyde and aldehyde exposure samples?
Yes. We are AIHA-accredited for formaldehyde and aldehyde IH testing using OSHA 1007, NIOSH 2016, OSHA 64, and EPA TO-11 via HPLC. Formaldehyde monitoring is required in healthcare, mortuaries, composite wood manufacturing, and textile processing. The OSHA PEL is 0.75 ppm TWA with a 2 ppm STEL. Contact us for a project estimate.
13. What mold testing methods do you offer?
We offer the full range of US mold testing methods: non-viable spore trap (Air-O-Cell-type cassettes counted by microscopy), viable culture (samples grown to identify species and assess viability), direct exam of tape lifts, swabs, and bulk materials, and MSQPCR (mold-specific quantitative PCR) for DNA-based species identification. For air sampling we recommend collecting a concurrent outdoor reference sample, since there is no universal "normal" indoor count — results are interpreted relative to the outdoor baseline. Our lab holds Texas TDLR Mold License LAB1070 and is AIHA EMLAP-accredited.
14. What is DoD-ELAP accreditation and why does it matter?
DoD-ELAP (Department of Defense Environmental Laboratory Accreditation Program) is required for laboratories performing environmental industrial hygiene testing on U.S. military installations and Department of Energy sites. AGT Labs holds PJLA DoD-ELAP accreditation No. 71390-1 for asbestos PLM (EPA 600/R-93/116) and PCM (NIOSH 7400) methods. This accreditation is mandatory for BRAC remediation projects, military base renovations, and federal facility compliance under UFC 3-490-04A. Verify at pjlabs.com.
Industrial Hygiene Department
Request a Quote or Sampling Kit
Tell us what you need — we'll respond with pricing, turnaround times, and sampling media shortly.