Lead Testing Lab Houston, TX — NIOSH 7303 ICP-AES & NIOSH 9100
Need lead testing in Houston? AGT Labs analyzes samples collected by your industrial hygienist, EHS team or consultant — drop off at 10200 East Freeway, Suite 101, or ship from anywhere in the U.S. AIHA LAP-accredited (LAP-101470, continuously accredited since February 2000) industrial hygiene testing laboratory for lead in air and surface wipe analysis. NIOSH 7303 ICP-AES airborne lead monitoring and NIOSH 9100 surface wipe analysis are within our AIHA IHLAP-accredited scope. AIHA LAP-101470 · ISO/IEC 17025:2017. OSHA 1910.1025 and 1926.62 compliance reporting for airborne and surface lead exposure. Samples received before 2:00 PM CT logged same day.
Lead has no safe level of exposure — and OSHA's 1910.1025 standard is one of the most enforcement-active substance-specific standards in general industry
No Safe Level — Lead Is a Cumulative Neurotoxin
Lead accumulates in bone over decades and continues releasing into blood throughout a worker's life. The CDC and WHO state there is no known safe blood lead level. Chronic low-level exposure causes hypertension, cognitive decline, kidney damage, and reproductive effects — mitigated only by proper industrial lead testing.
OSHA 1910.1025 Is Heavily Enforced
Lead is consistently one of OSHA's top-cited standards in general industry. 1910.1025 imposes documented monitoring requirements, medical surveillance, biological exposure indices, written compliance programs, and PPE — all triggered when air monitoring shows exposures at or above the 30 µg/m³ action level.
Trigger Tasks Require Monitoring — No Exemptions
OSHA 1910.1025 Appendix B identifies eight trigger tasks requiring initial air monitoring — abrasive blasting, manual scraping, welding on painted substrates, and others. Employers cannot assume exposures are below the action level for trigger tasks without documented industrial lead testing data.
Two Exposure Pathways, Two Accredited Test Types
Lead exposure occurs via inhalation (airborne lead) and ingestion (lead dust on surfaces). A complete industrial lead testing assessment combines air monitoring (µg/m³) and surface wipe sampling (µg/ft²).
OSHA 1910.1025 (General Industry) & 1926.62 (Construction) — Lead Standard Framework
Triggers medical surveillance, quarterly monitoring & written compliance
Full compliance program — engineering controls, respirators, hygiene facilities, biological monitoring
Same as OSHA PEL for lead — unlike many metals where ACGIH is stricter
Airborne Lead Personal Air Monitoring
NIOSH 7303 ICP-AES (30+ metals simultaneously). MCE filter cassette collection at 1–4 L/min personal pump. 8-hour TWA and STEL industrial lead testing for OSHA 1910.1025 and 1926.62 action level (30 µg/m³) and PEL (50 µg/m³) compliance. Initial, periodic, and post-control monitoring.
OSHA 1910.1025 requires initial industrial lead testing for all employees who may be exposed to lead at or above the action level. For trigger tasks (Appendix B), initial monitoring must be conducted regardless of assumptions. AGT Labs provides personal 8-hour TWA results in µg/m³, compared to both the action level and PEL, with clear compliance determination on every report. Lead exposure monitoring is a cornerstone of any IH testing program in construction, general industry, and maritime settings. Our IH lab processes airborne lead samples using NIOSH 7303 ICP-AES with method detection limits well below OSHA's action level of 30 µg/m³.
- Initial monitoring — required before trigger task commencement or when lead exposure suspected
- Below AL (30 µg/m³): no further monitoring required; record kept
- At or above AL, below PEL: quarterly monitoring + medical surveillance program
- At or above PEL (50 µg/m³): full 1910.1025 compliance — engineering controls, respirators, hygiene, biological monitoring
- Post-control monitoring: verify engineering control effectiveness after LEV installation
- NIOSH 7303 ICP-AES also reports cadmium, arsenic, chromium, beryllium from same filter — critical for multi-metal industrial operations
One Lead Exposure Assessment — Air and Surface Samples
Lead reaches workers through two main routes in industrial settings — inhalation and surface contact / ingestion. A complete industrial lead testing program covers both pathways with the matched sample type, regulatory threshold, and analytical method.
The primary exposure route in industrial settings. Lead-bearing fume and dust enter the breathing zone and absorb through the alveolar-capillary membrane. Sample with NIOSH 7303 ICP-AES — MCE filter cassette + personal pump at 1–4 L/min. Reported in µg/m³ as 8-hour TWA. Triggers OSHA 1910.1025 / 1926.62 compliance program when at or above the 30 µg/m³ action level.
Settled lead dust creates a secondary ingestion exposure through hand-to-mouth contact. Critical for clearance testing after abatement and housekeeping verification under OSHA 1910.1025(h). Sample with NIOSH 9100 — pre-moistened trace-metal-free wipe over a defined surface area (100 cm² template). Reported in µg/ft² and compared to EPA's updated 2024 clearance levels: 10 µg/ft² (floor), 100 µg/ft² (window sill / trough).
Lead Trigger Tasks — When OSHA Requires Initial Monitoring Regardless of Assumptions
OSHA 1910.1025 Appendix B identifies tasks that historically generate airborne lead at or above the action level. For any of these tasks, an employer cannot assume exposures are below the action level without documented industrial lead testing data.
Abrasive Blasting on Lead-Coated Surfaces
Dry abrasive blasting of lead-painted steel structures (bridges, tanks, industrial equipment) generates extremely high airborne lead concentrations — often 100–1,000× the OSHA PEL at the blasting nozzle position. Full OSHA 1910.1025 compliance and supplied-air respirators are typically required.
Welding, Cutting & Burning on Lead-Painted Substrates
Thermal work on lead-painted structural steel vaporizes lead paint at temperatures above lead's boiling point, generating lead oxide fumes at very high concentrations. Common in bridge repair, industrial demolition, and steel structure modification — requires initial monitoring from an industrial lead testing lab before work begins.
Lead Smelting, Refining & Casting
Primary and secondary lead smelting, lead casting, and battery plate manufacturing involve molten lead that generates lead fume continuously. These operations typically require the most intensive monitoring program and are highest-risk for exceeding both the action level and PEL simultaneously.
Power Tool Cleaning of Lead-Painted Surfaces
Grinding, chipping, needle-gunning, or wire brushing of lead-painted surfaces with power tools without local exhaust ventilation generates respirable lead dust at concentrations typically above the action level. Common in tank maintenance, ship repair, and industrial facility renovation.
Manual Demolition of Lead-Painted Structures
Demolition of buildings, structures, or equipment with legacy lead-based paint through manual methods (sledgehammer, pry bar, jackhammer) disturbs paint and generates lead dust and chips. Construction activities under 1926.62 with assumed exposures above the AL require initial monitoring.
Heat Gun Application & Hand-Scraping of Lead Paint
Heat gun application above 1,100°F vaporizes lead from paint — generating lead fume at concentrations that may exceed the action level depending on surface lead content and ventilation. Manual scraping and hand-sanding generate lead-containing dust particles in the breathing zone. Demolition and renovation projects that trigger lead monitoring under OSHA 1926.62 often require parallel asbestos testing under EPA NESHAP — AGT Labs can process both under a single chain of custody.
Industrial Lead Testing — Airborne Lead Analytical Methods
AGT Labs performs all airborne lead analysis in-house at Houston TX — no send-outs. Method selection depends on multi-metal co-exposure risk and required detection limit relative to the 30 µg/m³ action level.
ICP-AES Multi-Element Analysis
Inductively Coupled Plasma Atomic Emission Spectroscopy simultaneously quantifies lead and 30+ other metals (cadmium, arsenic, chromium, beryllium, manganese, nickel) from a single MCE filter acid digest. Preferred for industrial environments where multiple toxic metals may co-exist. Low detection limits — critical for samples near the 30 µg/m³ action level.
ICP-AES Multi-Metal Panel
ICP-Atomic Emission Spectroscopy offers simultaneous multi-metal analysis with detection limits suitable for OSHA 1910.1025 compliance monitoring. AGT Labs is AIHA IHLAP-accredited (LAP-101470) for NIOSH 7300 Modified and OSHA 125G Modified — the established multi-metal scan methods compliant with OSHA 1910.1025 compliance. When airborne lead is identified alongside other elements on the filter, our metals in air ICP scan provides simultaneous quantitation of 30+ metals from the same sample — maximizing data while minimizing sampling burden.
Detection Limits, Sample Volumes & Quantification
Sample volume drives detection capability. The longer you sample, the lower the air concentration you can quantify. Use this guidance to design your sampling plan around the 30 µg/m³ action level and 50 µg/m³ PEL.
| Sampling Scenario | Flow / Time | Total Volume | Reportable Range (NIOSH 7303 ICP-AES) | Best for |
|---|---|---|---|---|
| Short-task sample (1-hr) | 2.0 L/min × 60 min | 120 L | ~1.3 – 50+ µg/m³ | Maintenance turnarounds, blast cleanup, short tasks |
| Half-shift TWA | 2.0 L/min × 4 hr | 480 L | ~0.31 – 20 µg/m³ | Half-shift personal monitoring |
| Full-shift TWA (8-hr) | 2.0 L/min × 8 hr | 960 L | ~0.16 – 10 µg/m³ | OSHA 8-hr TWA — direct comparison to AL (30) and PEL (50) |
| Low-flow extended TWA | 1.0 L/min × 8 hr | 480 L | ~0.31 – 20 µg/m³ | Conservative low-flow sampling for lead-only assessments |
| Area / IAQ-style monitoring | 2.0 L/min × 24 hr | 2,880 L | ~0.05 – 5 µg/m³ | Background ambient lead, post-abatement clearance |
Reading the math: Reportable range = LOQ (0.15 µg) ÷ sample volume (L), converted to µg/m³. A 960-L full-shift sample at the NIOSH 7303 LOQ resolves to ~0.16 µg/m³ — well below the OSHA 30 µg/m³ action level, providing the analytical headroom needed for reliable AL/PEL compliance determination. Talk to our IHLAP-accredited analysts at (713) 453-6090 if you need to push the detection limit lower than the table shows.
Lead Dust Wipe & Surface Clearance Testing
Lead dust wipe analysis by NIOSH 9100 (within our AIHA IHLAP-accredited scope). Results reported in µg/ft², with EPA reference levels (floor: 10 µg/ft²; window sill: 100 µg/ft²) shown for comparison. Used for housekeeping assessment in industrial facilities, post-abatement checks on industrial and commercial work areas, and pre-renovation lead dust surveys. AGT Labs is not an NLLAP-recognized (AIHA ELLAP) laboratory, so our results are not intended for EPA 40 CFR 745 / HUD dust-clearance in pre-1978 target housing or child-occupied facilities.
Airborne lead settles on work surfaces, floors, benches, and equipment — creating a secondary ingestion exposure route through hand-to-mouth contact. In industrial settings, surface lead dust accumulation can persist long after active lead-generating work has ceased. OSHA 1910.1025 includes housekeeping requirements — surfaces must be maintained as free of lead dust as practicable.
- Pre-moistened, trace-metal-free wipe cloths — collect lead dust from defined surface area (100 cm² or 1 ft²)
- NIOSH 9100 acid extraction + ICP-AES — results in µg/ft²
- Samples from floors, window sills, window troughs, work surfaces, and equipment
- Post-abatement clearance testing — verify lead dust below EPA clearance levels before re-occupancy
- Industrial housekeeping verification — OSHA 1910.1025 compliance documentation
- Pre-renovation baseline — establish contamination levels before renovation begins
Lead Dust Clearance Levels — Updated EPA 2024 Standards
EPA revised lead dust hazard standards in 2024, significantly lowering floor clearance thresholds. AGT Labs reports all wipe sample results against current EPA clearance levels and OSHA housekeeping standards.
| Surface Type | Previous Clearance Level | Current EPA Standard (2024) | OSHA Reference | Applicable Regulation |
|---|---|---|---|---|
| Floor Dust | 40 µg/ft² (pre-2024) | 10 µg/ft² | Housekeeping — as low as practicable | EPA 40 CFR 745 · OSHA 1910.1025(h) |
| Window Sill | 250 µg/ft² (pre-2024) | 100 µg/ft² | Not specifically defined by OSHA | EPA 40 CFR 745 · HUD Guidelines |
| Window Trough | 400 µg/ft² (pre-2024) | 100 µg/ft² | Not specifically defined by OSHA | EPA 40 CFR 745 · HUD Guidelines |
| Industrial Work Surface | No EPA numeric clearance — OSHA requires "as free of lead as practicable" | 1910.1025(h)(1) Housekeeping | OSHA 1910.1025(h) | |
| Soil (Exterior) | 400 ppm bare soil | 200 ppm bare soil (EPA 2024) | EPA Residential Soil Standard | EPA 40 CFR 745.227 / TSCA §403 |
* EPA 2024 updated standards apply to target housing and child-occupied facilities. Industrial facilities use OSHA housekeeping standards. Texas TCEQ Effects Screening Levels for ambient lead are 0.5 µg/m³ annual / 1.5 µg/m³ short-term — applicable to permit reviews under 30 TAC 101 / 113. Consult AGT Labs for applicable standard determination based on your facility type.
Turnaround Times & Lead Sampling Kits
Lead Monitoring Isn't One-and-Done
OSHA 1910.1025 requires quarterly air monitoring and ongoing medical surveillance once exposures reach the 30 µg/m³ action level — plus re-monitoring whenever a task, material, or engineering control changes. Set up a recurring program and we'll set your recurring submission calendar, hold your media, and apply standing-account volume pricing.
Lead Sampling Kits — Air and Wipe
- 0.8 µm MCE filter cassettes (37mm, 3-piece) — airborne lead (NIOSH 7303)
- Calibrated personal sampling pumps, 1–4 L/min (loaner)
- Pre-moistened trace-metal-free wipes — surface lead (NIOSH 9100)
- Wipe sample collection templates (100 cm² / 1 ft²) + gloves
- Field data sheets — substrate type, surface area, layer description
- Chain-of-custody forms with pre-printed sample IDs
- Return shipping labels and evidence-sealed bags
From Lead Sample Collection to Certified Compliance Report
Identify Sample Types Needed
Air monitoring (OSHA compliance) and surface wipes (housekeeping) — or both for a complete lead exposure assessment.
Request & Deploy Correct Media
Air: MCE filter at 1–4 L/min in breathing zone. Wipes: pre-moistened trace-metal-free wipe over defined area. Paint: chip collection into pre-labeled containers.
Document & Ship to IH Lab
Record task, substrate, surface area sampled, pump start/stop, worker job function. Seal cassettes and evidence-bag wipe samples immediately. Ship to AGT Labs Houston with COC.
ICP-AES Analysis at IH Lab
Air filters: acid digest + ICP-AES. Wipes: acid extract + ICP-AES (µg/ft²).
Compliance Report Delivered
Air: µg/m³ vs. OSHA AL (30) and PEL (50) with compliance determination. Wipes: µg/ft² vs. EPA clearance levels.
Who Relies on AGT Labs for Industrial Lead Testing
Welding operations that involve lead-coated or lead-alloy substrates should pair lead monitoring with a full welding fume analysis to evaluate manganese, hexavalent chromium, and other metal fume constituents generated at the arc.
Bridge Painting & Infrastructure Maintenance
Texas DOT and highway bridge repainting projects require comprehensive lead programs: airborne lead monitoring for blasters and painters and wipe sampling after containment removal. AGT Labs is a primary IH lab for Gulf Coast infrastructure projects requiring airborne and surface lead testing.
Battery Manufacturing & Recycling
Lead-acid battery manufacturing (plate casting, grid pasting, formation charging) and secondary smelting operations generate the highest airborne lead concentrations in general industry. NIOSH 7303 ICP-AES simultaneously captures lead plus cadmium and arsenic co-exposures on a single MCE filter.
Industrial Demolition & Renovation
Construction, demolition, and renovation of pre-1980 industrial facilities and commercial buildings frequently involves lead-painted structural steel. Where a building has stood vacant through the works, add Legionella testing of the water system to the reoccupancy checks — stagnant plumbing is a separate hazard from anything on the lead programme.
Shipbuilding, Ship Repair & Marine Industry
Naval and commercial shipyards perform continuous abrasive blasting and repainting of vessel hulls, superstructures, and interior compartments using lead-containing coatings. Enclosed compartments create extremely high airborne lead concentrations — often requiring full 1910.1025 compliance programs.
Commercial & Residential Abatement Contractors
Lead abatement firms performing work in pre-1978 housing and child-occupied facilities require post-abatement clearance wipe testing per EPA 40 CFR 745 before re-occupancy. AGT Labs provides rapid clearance testing — results reported as µg/ft² with direct comparison to EPA updated floor (10 µg/ft²) and window sill (100 µg/ft²) clearance levels. See our dedicated education and government & municipal facilities testing programs for the full scope.
IH Consultants & Industrial Hygiene Programs
Multi-client lead monitoring programs across construction, heavy industry, and manufacturing. AGT Labs provides MCE cassette air sampling kits, trace-metal-free wipe kits, and bulk sample containers — all pre-labeled with COC. NIOSH 7303 ICP-AES results report lead and co-metals simultaneously, providing maximum value from each sampling event.
Industrial Lead Testing — Frequently Asked Questions
What is the OSHA PEL for airborne lead?
What NIOSH methods are used for airborne lead testing?
What is the EPA clearance level for lead dust on floors?
What lead-generating work activities require OSHA monitoring?
What is the detection limit for lead air monitoring at AGT Labs?
When does OSHA require medical removal for lead exposure?
What is included in AGT Labs' lead air monitoring report?
What is the Texas TCEQ Effects Screening Level for lead?
How long are lead samples stable after collection?
Is AGT Labs accredited for industrial lead testing?
Industrial Lead Testing Lab Serving Houston's Industrial Base
AGT Labs is located at 10200 East Freeway, Suite 101, Houston TX 77029 — within the Houston Ship Channel industrial corridor. All ICP-AES and wipe analysis is performed in-house. No send-outs. Samples received before 2:00 PM CT logged same day.
Accredited (Since 2000)
7303 · 9100 (AIHA)
OSHA Initial Monitoring
10200 E. Freeway
Need an Accredited IH Lab for Industrial Lead Testing?
ISO/IEC 17025 · AIHA LAP since 2000 (LAP-101470, IHLAP) · NIOSH 7303 ICP-AES · NIOSH 9100 Wipes · Houston TX. Ask about recurring monitoring programs and volume pricing for ongoing OSHA compliance sampling.