Chamber Comparison
HPO TECH PetravsPerry Baromedical Sigma 34
HPO TECH
Petra
2.4
ATA
$50K
Starting
—
Warranty
Perry Baromedical
Sigma 34
3
ATA
$50K
Starting
1yr
Warranty
The Bottom Line
The Perry Baromedical Sigma 34 has clear advantages in max pressure, fda clearance, and clinical credibility. However, both chambers sit in the Clinical Grade tier, so consider your specific requirements before deciding.
Key Differences
HPO TECH
2.4 ATA
Perry Baromedical
3 ATA
Higher pressure enables more clinical protocols. The Perry Baromedical Sigma 34 reaches 3 ATA, which supports FDA-approved treatment protocols.
HPO TECH
Not FDA Cleared
Perry Baromedical
FDA Cleared
FDA clearance matters if you need insurance reimbursement, plan to operate a clinical facility, or want the highest safety assurance. For home wellness use, it's less critical.
HPO TECH
5/10
Perry Baromedical
9/10
This score reflects published studies, certifications, and clinical adoption. Higher scores indicate stronger evidence backing the manufacturer's claims.
Who Should Buy Which?
Best for
HPO TECH Petra
Elderly patients, accessibility-focused clinics, easy-entry requirement
View full details →Best for
Perry Baromedical Sigma 34
Hospitals, wound care centers, clinical HBOT programs
View full details →Full Specification Comparison
| Specification | HPO TECH Petra | Perry Baromedical Sigma 34 |
|---|---|---|
| Chamber Type | Hard-Shell Monoplace | Hard-Shell Monoplace |
| Performance Tier | Clinical Grade | Clinical Grade |
| Max Pressure | 2.4 ATA | 3 ATA★ |
| Oxygen Delivery | 100%-medical-grade | 100%-medical-grade |
| O₂ Concentration | 95-100% via mask/hood | 100% via BIBS with Duke hoods |
| Capacity | 1-person | 1-person |
| Weight | — | 2,200 lbs |
| Interior Dimensions | Accessibility-focused with retractable acrylic door | 33.5in diameter |
| Portability | fixed-installation | fixed-installation |
| FDA Cleared | No | Yes (#Multiple 510(k)s)★ |
| CE Marked | Yes | Yes |
| Made In | Turkey | United States |
| Price | Custom quote (est. $50,000 - $100,000)★ | $50,000 - $90,000 |
| Warranty | — | 1 year |
| Clinical Score | 5/10 | 9/10★ |
| Brand Established | 2020 | 1956 |
| Climate Control | Yes | Yes |
| Communication System | Yes | Yes |
| Emergency Features | Emergency depressurization, fire suppression, retractable door for easy access | Emergency depressurization, fire suppression, BIBS system, multiple safety interlocks |
HPO TECH Petra — Standout Features
Perry Baromedical Sigma 34 — Standout Features
Interested in either chamber?
Request quotes from both manufacturers and compare real pricing.
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