Penlon Sigma Delta Anesthetic Vaporizer – Sevoflurane

The Penlon Sigma Delta delivers consistent sevoflurane concentrations even when fresh gas flows drop below 1 L/min, where many vaporizers start losing accuracy. This matters during low-flow anesthesia protocols where precise agent delivery becomes critical for both patient safety and cost control.

Unlike older vaporizer designs that require frequent recalibration, the Sigma Delta maintains output accuracy across its entire flow range without operator adjustments. The short version: it works reliably at the flows your anesthesiologists actually want to use. You’ll see fewer concentration alarms and more predictable wake times.

At 4.8 kg, it’s lighter than most competing sevoflurane vaporizers, and the service-free design means ten years between major maintenance cycles. Worth noting that both key-fill and pour-fill configurations are available, so you can match your department’s existing workflow.

Key Features

• Reliable performance at low fresh-gas flows
• Compatible with Selectatec®, Drager Plug-In®, North American Drager, and Cagemount systems
• Lightweight construction for easy handling
• Service-free operation with 10-year service intervals
• Available in key-fill or pour-fill models