Chamber Comparison
Perry Baromedical Sigma 34vsPerry Baromedical Sigma 40-II
Perry Baromedical
Sigma 34
3
ATA
$50K
Starting
1yr
Warranty
Perry Baromedical
Sigma 40-II
3
ATA
$100K
Starting
1yr
Warranty
The Bottom Line
The Perry Baromedical Sigma 34 has clear advantages in price and weight. However, both chambers sit in the Clinical Grade tier, so consider your specific requirements before deciding.
Key Differences
Perry Baromedical
$50,000 - $90,000
Perry Baromedical
$100,000 - $160,000
A significant price gap of ~50%. Consider whether the higher-priced unit's additional features justify the investment for your use case.
Perry Baromedical
hard-shell monoplace
Perry Baromedical
hard-shell multiplace
Hard-shell chambers generally offer higher pressures and more clinical features, while soft-shell chambers are more portable and affordable.
Perry Baromedical
2,200 lbs
Perry Baromedical
3,000 lbs
Weight matters for portability and installation. Lighter chambers are easier to move between rooms or take to a second location.
Who Should Buy Which?
Best for
Perry Baromedical Sigma 34
Hospitals, wound care centers, clinical HBOT programs
View full details →Best for
Perry Baromedical Sigma 40-II
High-volume wound care centers, efficiency-focused clinical programs
View full details →Full Specification Comparison
| Specification | Perry Baromedical Sigma 34 | Perry Baromedical Sigma 40-II |
|---|---|---|
| Chamber Type | Hard-Shell Monoplace | Hard-Shell Multiplace |
| Performance Tier | Clinical Grade | Clinical Grade |
| Max Pressure | 3 ATA | 3 ATA |
| Oxygen Delivery | 100%-medical-grade | 100%-medical-grade |
| O₂ Concentration | 100% via BIBS with Duke hoods | 100% via BIBS with Duke hoods |
| Capacity | 1-person | 2-person |
| Weight | 2,200 lbs★ | 3,000 lbs |
| Interior Dimensions | 33.5in diameter | 40.5in diameter, dual-patient |
| Portability | fixed-installation | fixed-installation |
| FDA Cleared | Yes (#Multiple 510(k)s) | Yes (#Multiple 510(k)s) |
| CE Marked | Yes | Yes |
| Made In | United States | United States |
| Price | $50,000 - $90,000★ | $100,000 - $160,000 |
| Warranty | 1 year | 1 year |
| Clinical Score | 9/10 | 9/10 |
| Brand Established | 1956 | 1956 |
| Climate Control | Yes | Yes |
| Communication System | Yes | Yes |
| Emergency Features | Emergency depressurization, fire suppression, BIBS system, multiple safety interlocks | Emergency depressurization, fire suppression, dual BIBS, multiple safety interlocks |
Perry Baromedical Sigma 34 — Standout Features
Perry Baromedical Sigma 40-II — Standout Features
Interested in either chamber?
Request quotes from both manufacturers and compare real pricing.
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