Glutaraldehyde & Ortho-phthalaldehyde (OPA) Exposure Monitoring
Glutaraldehyde and ortho-phthalaldehyde are respiratory and dermal sensitizers used in open soak basins and automated reprocessors, often in undersized rooms with recirculating air. The ACGIH ceiling for glutaraldehyde is 0.05 ppm — a level people can smell and react to well before conventional sampling catches it, which is why staff complaints usually come first.
We sample the reprocessing area and the technicians working it, analyze in an AIHA-accredited laboratory, and give you a report that either clears the room or shows exactly which task and which control is failing.
Exposure limits we report against
| Limit | Value | Source |
|---|---|---|
| ACGIH TLV — glutaraldehyde | 0.05 ppm ceiling | ACGIH TLVs |
| NIOSH REL — glutaraldehyde | 0.2 ppm ceiling | NIOSH |
| OSHA — glutaraldehyde | No specific PEL — General Duty Clause applies | OSHA |
| OPA (ortho-phthalaldehyde) | No established PEL/TLV; manufacturer guidance and sensitizer controls apply | Manufacturer SDS / OSHA |
Who needs it
- Endoscopy and GI reprocessing rooms
- Sterile processing departments (SPD)
- Dental, podiatry and ENT clinics using cold sterilization
- Dermatology and Mohs suites with instrument reprocessing
- Veterinary reprocessing areas
What's included
- Ceiling and task-based sampling during active reprocessing
- Personal breathing-zone and area badges
- AIHA-LAP accredited laboratory analysis
- Comparison to ACGIH ceiling and NIOSH recommendations
- Ventilation and enclosure observations from the site visit
- Written report with prioritized control recommendations
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Controls we recommend when levels are high
Use closed-system automated reprocessors instead of open soak basins
Ensure covered basins, local exhaust and 10+ air changes per hour in reprocessing rooms
Never recirculate reprocessing room air to other areas
Provide nitrile or butyl gloves, eye protection and gowns; avoid latex
Maintain an eyewash station and spill kit in the room
Consider switching to a lower-hazard high-level disinfectant where validated
Craftsmanship Warranty Included
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Glutaraldehyde & OPA Monitoring — Frequently Asked Questions
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Request Glutaraldehyde & OPA Monitoring
Tell us how many people need sampling and what prompted the request. We respond within one business day.
Facilities that request this monitoring
Hospitals & Health Systems
Multi-building campuses, Joint Commission readiness, source equipment and 24/7 pipeline support.
Dermatology & Mohs Labs
Formalin, xylene and glutaraldehyde exposure monitoring for dermatology offices and in-house Mohs histology labs.
Office-Based Surgery & Accreditation
AAAASF / AAAHC / QUAD A accreditation prep: gas system testing, exposure monitoring and survey-ready documentation.
Other monitoring programs
Nitrous Oxide Monitoring
Personal N₂O dosimetry for dental, oral surgery, L&D and veterinary teams against the NIOSH 25 ppm limit.
Formaldehyde & Formalin Monitoring
OSHA 1910.1048 initial and periodic TWA/STEL monitoring for histology, pathology, Mohs and grossing areas.
Waste Anesthetic Gas Monitoring
Halogenated agent and N₂O sampling for ORs, procedure rooms, PACU and veterinary surgery suites.
Oxygen Deficiency Monitoring
O₂ displacement assessment for cylinder rooms, cryogenic and liquid nitrogen areas, and confined spaces.
Ready to Get Started?
Contact Medical Testing Solutions today for a free consultation. We serve healthcare facilities in all 50 states with certified technicians and fast turnaround.
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