PCB Testing Lab Houston, TX — Polychlorinated Biphenyls · Air & Wipe · NIOSH 5503
Houston's AIHA IHLAP-accredited PCB testing lab and industrial hygiene testing laboratory at 10200 East Freeway, Suite 101, Houston TX 77029. NIOSH 5503 analysis for polychlorinated biphenyls (PCBs) by GC/ECD — Aroclor pattern matching for 1016, 1242, 1248, 1254, and 1260. Air monitoring, surface wipe testing, building caulk analysis, and TSCA compliance. All performed in-house with no outsourcing. AIHA LAP-101470 accredited under the IHLAP program. Samples received before 2:00 PM CST logged same day.
Why accredited PCB analysis protects your workers and building occupants
IARC Group 1 — Confirmed Carcinogen
PCBs are classified by IARC as Group 1 confirmed human carcinogens. Even decades after their 1979 ban, PCBs persist in building materials, transformers, and industrial equipment — releasing into indoor air and contaminating surfaces.
TSCA Federal Regulation
EPA regulates PCBs under the Toxic Substances Control Act (TSCA) with strict thresholds: materials containing ≥50 ppm PCBs are regulated for handling, removal, and disposal. IH lab testing confirms PCB concentrations for TSCA compliance.
Building Renovation Risk
Pre-1979 building caulk, sealants, and fluorescent light ballasts frequently contain PCBs. Renovation that disturbs these materials releases PCBs into indoor air and onto surfaces — creating exposure risks for workers and future building occupants.
EPA Surface Cleanup Standards
EPA defines PCB surface cleanup levels: 10 µg/100 cm² for high-contact surfaces and 100 µg/100 cm² for low-contact surfaces. Surface wipe testing from an accredited IH lab confirms compliance with EPA 40 CFR 761 cleanup requirements.
What Is PCB Testing?
PCB testing — formally known as polychlorinated biphenyls testing — is an industrial hygiene (IH) air monitoring service that measures the concentration of polychlorinated biphenyls in workplace air, surface wipes, and bulk building materials using Gas Chromatography with Electron Capture Detection (GC/ECD). PCBs are a class of 209 synthetic chlorinated organic compounds manufactured primarily as Aroclor mixtures from the 1920s through 1979, widely used in transformers, capacitors, hydraulic fluids, and building materials (caulk, sealants, fluorescent ballasts) before their US ban.
As Houston's AIHA IHLAP-accredited PCB testing lab and trusted IH testing lab, AGT Labs performs all NIOSH 5503 analyses in-house by GC/ECD at our Houston facility (LAP-101470). We provide Aroclor pattern matching for the five most common commercial mixtures (1016, 1242, 1248, 1254, 1260) plus total PCB calculations. No outsourcing, no subcontracting.
- Personal breathing zone PCB air monitoring — NIOSH 5503 GC/ECD
- Area air monitoring for PCB indoor air contamination assessment
- Surface wipe testing for EPA 40 CFR 761 cleanup verification (Ghost Wipe)
- Aroclor pattern matching: 1016, 1242, 1248, 1254, 1260
- Total PCB calculation from individual Aroclor contributions
- Building caulk and sealant PCB screening (pre-renovation)
- TSCA compliance documentation for ≥50 ppm threshold determination
PCB Testing Method — NIOSH 5503
NIOSH 5503 is the validated analytical method for polychlorinated biphenyls in workplace air. Here's exactly what this method measures.
NIOSH 5503 — PCBs by GC/ECD
Air samples collected on OVS tubes (glass fiber filter + XAD-2 sorbent) or GFF cassettes capture both particulate and vapor-phase PCBs. The media is extracted with hexane and analyzed by gas chromatography with electron capture detection (GC/ECD) — a highly sensitive and selective technique for chlorinated compounds. Results are reported as individual Aroclor patterns and total PCBs.
TSCA PCB Regulations — Compliance Guide
The Toxic Substances Control Act (TSCA), 40 CFR Part 761, is the primary federal regulation governing the manufacture, processing, distribution, use, cleanup, storage, and disposal of polychlorinated biphenyls (PCBs) in the United States. Understanding TSCA PCB thresholds is essential for building owners, environmental consultants, and renovation contractors.
AGT Labs provides the accredited GC/ECD analytical data needed for TSCA compliance determination, including bulk material PCB concentration (ppm), surface wipe contamination levels, and air monitoring during PCB-related work activities.
- ≥50 ppm = Regulated PCB material: Materials at or above 50 ppm total PCBs are regulated under TSCA for handling, removal, and disposal
- <50 ppm = Generally non-regulated: Materials below 50 ppm are exempt from most TSCA PCB requirements (exceptions apply)
- Disposal requirements: Regulated PCB waste must be disposed of at EPA-approved facilities — incineration or chemical waste landfill
- Use authorization: PCBs in intact electrical equipment may continue in service under TSCA use authorizations until end of useful life
- Cleanup levels: Self-implementing cleanup under 40 CFR 761.61 with surface standards of 10/100 µg/100 cm²
- Notification: EPA must be notified of PCB spills exceeding certain thresholds and of activities involving PCB-containing building materials
Surface Wipe Testing for PCB Contamination
PCB surface wipe testing is the standard method for assessing surface contamination in buildings, on equipment, and for post-cleanup verification. The methodology follows ASTM D6966 for sample collection and NIOSH 5503 (modified) for GC/ECD analysis.
Surface wipe results are compared to EPA 40 CFR 761 cleanup standards to determine whether surfaces are safe for continued occupancy or whether additional decontamination is required.
- Collection method: 10 cm × 10 cm area (100 cm²) wiped with hexane-wetted gauze pad in S-pattern
- Analysis: GC/ECD with Aroclor pattern matching — same accredited methodology as air samples
- Pre-renovation assessment: Determine if building surfaces are contaminated before disturbing PCB-containing materials
- Post-cleanup verification: Confirm that decontamination has reduced surface PCBs to EPA standards
- Equipment decontamination: Verify PCB removal from transformer housings, capacitor racks, and electrical enclosures
- EPA cleanup levels: 10 µg/100 cm² (high-occupancy surfaces) and 100 µg/100 cm² (low-occupancy surfaces)
Aroclor Pattern Identification by GC/ECD
PCBs were manufactured as commercial mixtures called Aroclors, each with a characteristic chlorine content indicated by the last two digits of the product number. GC/ECD produces unique chromatographic patterns for each Aroclor, allowing identification of which mixture(s) are present in a sample. Environmental weathering can alter patterns over time.
| Aroclor | Chlorine % | Typical Sources | Volatility | Common In |
|---|---|---|---|---|
| Aroclor 1016 | 41% | Capacitors, small electrical devices | Higher | Electrical manufacturing facilities |
| Aroclor 1242 | 42% | Capacitors, hydraulic fluids, sealants | Higher | Industrial equipment, older buildings |
| Aroclor 1248 | 48% | Transformers, heat transfer fluids | Moderate | Utility and industrial transformers |
| Aroclor 1254 | 54% | Transformers, building caulk, paint | Lower | Pre-1979 building materials, transformers |
| Aroclor 1260 | 60% | Older transformers, building caulk | Lowest | Heavily chlorinated applications, old caulk |
Pattern Interpretation Notes
Environmental weathering alters Aroclor chromatographic patterns over time. Lighter (lower-chlorinated) congeners evaporate preferentially, leaving behind heavier congeners. A sample that originally contained Aroclor 1242 may appear more like 1254 or 1260 after decades of weathering in building caulk.
Mixed Aroclors are common in transformer oil and building materials. AGT Labs reports all Aroclor patterns detected plus total PCB concentration. When patterns are ambiguous due to weathering, our analysts note the interpretation and provide total PCB data for regulatory comparison.
PCB in Building Materials — Caulk, Paint & Ballasts
Pre-1979 buildings are the most common source of ongoing PCB exposure in the United States. PCBs were added to building materials for flexibility, durability, and flame resistance. Testing before renovation or demolition is critical for worker safety and TSCA compliance.
Window Caulk & Sealants
Polysulfide and polyurethane caulk used in pre-1979 window glazing, curtain wall construction, and expansion joints frequently contains PCBs at concentrations of 1,000–300,000 ppm. This is the most common and highest-concentration PCB building material. Bulk sampling with GC/ECD analysis determines TSCA regulatory status.
Fluorescent Light Ballasts
Magnetic ballasts manufactured before 1979 contain PCB-filled capacitors and may contain PCB-contaminated potting material. Leaking ballasts release PCBs onto ceiling tiles, ductwork, and light fixtures. Ballast date codes determine PCB status — ballasts with a date code or marked "No PCBs" (post-1979) are generally exempt.
Paint & Coatings
Some pre-1979 paints and coatings, particularly marine, industrial, and floor coatings, contain PCBs as plasticizers. PCB concentrations in paint are typically lower than in caulk (10–5,000 ppm range) but can still exceed the TSCA 50 ppm threshold. Testing is recommended for pre-1979 painted surfaces before renovation.
Rubber Gaskets & Insulation
Rubber gaskets, door seals, and certain thermal insulation materials from the pre-1979 era may contain PCBs. These materials are less commonly tested but can be significant sources in industrial buildings, HVAC systems, and mechanical rooms.
Concrete & Masonry (Secondary)
PCBs from adjacent caulk migrate into porous concrete and masonry over decades. When caulk is removed, residual PCBs in substrate concrete may exceed cleanup levels. Surface wipe testing and core sampling determine contamination depth and extent.
Why Pre-Renovation Testing Is Critical
Disturbing PCB-containing building materials during renovation without proper controls violates TSCA and exposes workers and building occupants to a confirmed human carcinogen. EPA enforcement actions for improper PCB handling during renovation can result in penalties exceeding $50,000 per day per violation.
NIOSH 5503 — Deliverables & Report Format
No surprises in your PCB testing report. Here's exactly what NIOSH 5503 IH testing analysis returns.
| Analysis Type | Method / Standard | Sample Media | Report Deliverable | Rush? |
|---|---|---|---|---|
| NIOSH 5503 — PCB Air | NIOSH 5503 · GC/ECD | OVS tube or GFF cassette | Individual Aroclor concentrations + total PCB (µg/m³) + OSHA PEL comparison | Yes |
| PCB Surface Wipe | NIOSH 5503 mod · GC/ECD | Ghost Wipe (100 cm²) | PCB surface loading (µg/100 cm²) + EPA cleanup standard comparison | Yes |
| PCB Bulk/Caulk | GC/ECD | Bulk material sample | Total PCB concentration (ppm) + TSCA 50 ppm threshold comparison | Yes |
Turnaround Times & Free Testing Kits
Every rush option and kit detail — clearly laid out before you submit your first sample to our IH testing lab.
Free PCB Testing Kit Includes
- OVS tubes (GFF + XAD-2) for PCB air sampling — lot-certified
- Ghost Wipes for PCB surface wipe sampling (100 cm² template)
- Bulk sample containers for caulk and sealant PCB screening
- Field blanks (10% QA compliance)
- Pre-paid UPS return shipping label (domestic)
- PCB Chain of Custody (COC) form — pre-numbered
- Calibrated personal sampling pump (rental available)
Kits ship via UPS Ground — order with 5 business days notice. Houston metro courier pickup available: (713) 453-6090.
Sampling Field Requirements
Incorrect sampling invalidates results and wastes project time. Follow these parameters to ensure every sample produces valid, defensible data.
From Sample Collection to Certified Report
Request Kit or COC
Call, email, or request PCB testing COC. OVS tubes, Ghost Wipes, and bulk containers ship free with 5 days notice.
Collect Samples
Follow NIOSH 5503 parameters for air, or wipe/bulk protocols. Record locations, flow rates, and material descriptions on COC.
Ship to IH Lab
Ship via UPS. PCB samples logged same day if received before 2:00 PM CST.
GC/ECD Analysis at IH Lab
Gas chromatography with electron capture detection at our Houston IH testing facility. Aroclor pattern matching and total PCB calculation. No outsourcing.
Certified PCB Report
Results delivered with individual Aroclor concentrations, total PCB, OSHA PEL or EPA cleanup standard comparison, analyst signature, QA sign-off, and AIHA LAP-101470 accreditation.
Standards That Require Accredited Testing
Every AGT Labs report from our IH lab is structured to satisfy all applicable federal and Texas state regulatory requirements.
Who Relies on Our IH Testing Lab
Electrical Utilities
PCB transformer decommissioning, capacitor replacement, and switchgear maintenance expose workers to Aroclor-containing dielectric fluid. NIOSH 5503 personal monitoring during transformer draining, tank cutting, and PCB waste handling is essential for OSHA compliance.
Building Renovation
Pre-1979 building caulk, window glazing, expansion joint sealant, and fluorescent light ballasts frequently contain PCBs at concentrations exceeding the TSCA 50 ppm threshold. PCB bulk screening before renovation prevents worker exposure and TSCA violations.
Manufacturing
Legacy capacitor production facilities, hydraulic equipment manufacturing, and industrial sites with historical PCB use face ongoing contamination. Air monitoring and surface wipe testing document current exposure levels and cleanup effectiveness.
Environmental Remediation
PCB-contaminated soil, sediment, and groundwater remediation projects require worker air monitoring plus surface wipe clearance testing. NIOSH 5503 personal and area monitoring during excavation, dredging, and material handling.
Schools & Public Buildings
EPA has identified PCB-containing caulk in many pre-1979 schools and public buildings. Indoor air testing and surface wipe sampling document occupant exposure and verify compliance with EPA cleanup guidance for schools.
Shipbuilding & Marine
Legacy PCB-containing paints, sealants, and electrical equipment on vessels built before 1979 create exposure risks during ship repair, drydock maintenance, and decommissioning. IH monitoring per NIOSH 5503 required.
Waste Management & RCRA
Facilities handling PCB waste, PCB-contaminated materials, and TSCA-regulated equipment require worker air monitoring. PCB waste classification depends on total PCB concentration — GC/ECD analysis provides definitive ppm data for TSCA and RCRA compliance.
Frequently Asked Questions
Questions answered by our accredited IH lab team.
What is PCB testing and why is it important?
What is NIOSH 5503 and how does it work?
What is the OSHA PEL for PCBs?
What is the TSCA 50 ppm threshold for PCBs?
How do you test for PCBs in building caulk?
What are PCB surface wipe cleanup standards?
What is Aroclor pattern matching?
What is the turnaround time for PCB testing?
Is AGT Labs accredited for PCB testing?
How much does PCB testing cost?
Can PCBs in building caulk contaminate indoor air?
What is the difference between PCB air and wipe testing?
Do I need PCB testing before building renovation?
IH Testing Lab Serving Houston's Industries
AGT Labs is located at 10200 East Freeway, Suite 101, Houston TX 77029 — inside the Houston Ship Channel industrial corridor. As a full-service industrial hygiene testing lab, all analyses are performed in-house. No outsourcing, no send-outs. Samples received before 2:00 PM CST logged same day.
Identified by GC/ECD
Human Carcinogen
TAT Available
10200 E. Freeway
Need an Accredited IH Lab for PCB Testing?
AIHA IHLAP-accredited PCB testing lab · LAP-101470 · NIOSH 5503 · GC/ECD · Aroclor pattern matching · Air & wipe testing · TSCA compliance · Rush same-day available · 10200 East Freeway, Houston TX 77029