Refinery & Petrochemical Industrial Hygiene Testing
Routine, ongoing worker exposure monitoring for operating refineries and petrochemical plants — benzene, H₂S, welding fume, hex chrome and silica analyzed in-house at our Houston lab. Built for periodic compliance and similar-exposure-group programs, with 1-day rush and same-day log-in.
Why Refineries & Plants Run Their IH Program With Us
Accredited & Defensible
AIHA-LAP analysis with NVLAP for asbestos — data that holds up with OSHA, legal counsel and insurers.
In-House, No Send-Outs
Every analyte run under one roof — one chain of custody, consistent methods across your whole program.
Standing Accounts
Recurring monitoring runs on a standing account with reserved capacity, consistent reporting and one contact.
1-Day Rush
Same-day log-in before 2 PM CST and rush to 1 business day when a result is time-sensitive.
Routine Exposure Monitoring for Operating Plants
Operating refineries and petrochemical plants run continuous industrial hygiene programs — periodic personal sampling by similar exposure group, area monitoring at process units, respiratory-protection-program support, and the recordkeeping OSHA expects year-round. AGT Labs is the accredited lab behind that routine work, analyzing every sample in-house in Houston.
This is the day-to-day, compliance side of plant IH. When a scheduled shutdown compresses months of maintenance into days, that high-volume work is handled through our dedicated petrochemical turnaround air monitoring program — a distinct service built for outage-scale volume and speed.
- Periodic benzene / BTEX personal monitoring by SEG
- H₂S and reactive-gas area and personal sampling
- Welding fume, metals and hexavalent chromium for maintenance hot work
- Respirable crystalline silica for blasting and refractory work
- Asbestos, noise and heat stress program support
- Standing-account programs with consistent reporting
What We Analyze for Refineries & Petrochemical Plants
Every analyte below is run in-house under accreditation. Tap any card for the full method detail on our service pages.
Benzene & BTEX
NIOSH 1501 / OSHA 1028 — the defining refinery and petrochemical exposure.
View Service →H₂S & Reactive Gases
Ion chromatography for hydrogen sulfide and acid gases across sour-service units.
View Service →Refinery Analytes & OSHA Exposure Limits
The regulated limits your monitoring program is measured against, and the method our lab runs for each.
| Hazard | OSHA PEL (8-hr TWA) | Lab Method | Sample Type |
|---|---|---|---|
| Benzene | 1 ppm (STEL 5 ppm) | NIOSH 1501 / OSHA 1028 | Charcoal tube, personal |
| Hydrogen sulfide (H₂S) | 20 ppm ceiling (ACGIH TLV 1 ppm) | Ion chromatography | Treated filter / bubbler |
| Hexavalent chromium | 5 µg/m³ | OSHA ID-215 | PVC filter, personal |
| Respirable crystalline silica | 50 µg/m³ | XRD (NIOSH 7500 / OSHA ID-142) | Cyclone + PVC filter |
| Welding fume metals (e.g. Mn) | Mn 5 mg/m³ (ACGIH 0.02 resp.) | ICP-AES | MCE filter, personal |
| Asbestos | 0.1 f/cc | PCM (NIOSH 7400) / PLM | MCE filter / bulk |
Turnaround Times & Sample Kits
From kit request to final report — rush options and what ships to your plant.
Program & Kit Support
- Pre-labeled sampling media (tubes, filters, cyclones)
- Calibrated pump loaner program for qualifying clients
- Chain of Custody form, pre-filled with your info
- Courier pickup across the Houston / Gulf Coast area
- Standing-account setup for recurring monitoring
- Results delivered via secure online portal
From Sample Collection to Final Report
Set Up the Program
Share your SEGs and sampling plan. We set up a standing account and reserved capacity.
Kits & Pumps
Pre-labeled kits and loaner pumps ship to your plant HSE team.
Sample & Ship
Collect on schedule; media logs in same day if received before 2 PM CST.
Analysis & QA
AIHA-LAP accredited in-house analysis, senior-analyst QA before release.
Report
Consistent reporting on the secure portal, compared against OSHA limits.
Who Relies on AGT for Refinery IH Testing
Refinery HSE Departments
Company industrial hygienists running periodic compliance and SEG monitoring across process units.
Petrochemical Plants
Chemical and derivatives plants needing benzene, VOC, metals and reactive-gas exposure data.
IH & Safety Consultants
Third-party consultants who need an accredited lab partner with fast, consistent turnaround.
Maintenance & Contractors
Hot-work, blasting and mechanical crews needing welding fume, hex chrome and silica monitoring.
Midstream & Terminals
Tank farms, terminals and gathering facilities with benzene and H₂S exposure concerns.
Turnaround Planning Teams
Planning a shutdown? See our turnaround air monitoring program.
Refinery & Petrochemical IH Testing — FAQ
What routine industrial hygiene testing do refineries need?
Is this different from turnaround air monitoring?
How fast is analysis and can you set up a standing account?
Do you supply sampling media and pumps?
Can you support plants outside Houston?
Do you also test refinery products?
Set Up Your Refinery IH Program or Request a Quote
AIHA-LAP accredited · benzene · H₂S · welding fume · hex chrome · silica · asbestos · 1-day rush · standing-account pricing for recurring monitoring.