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A transparent, air-entrainment, elongated mask with soft anatomical under the chin shape. A rotating sleeve air entrainment valve allows you to dial in seven different oxygen concentrations: 24, 26, 28, 31, 35, 40 or 50%.
Aluminum nose clip aids in a positive fit for appropriate oxygen % delivery. Over-the-ear or elastic head strap styles. Standard with three channel, crush resistant safety tubing. A high humidity adapter permits use of a nebulizer with this assembly.

Available in…Pediatric and Adult sizes.
Single unit variable Venturi System delivering accurate concentrations of oxygen (from 24 to 50%) with a single unit.
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Percent-O2-Lock® Venturi System
The Percent-O2-Lock® air entrainment oxygen mask includes a rotating sleeve, opening and closing an air entrainment window. This provides the ability to deliver seven (7) fixed oxygen concentrations to a spontaneously breathing patient. Concentration levels are easily dialed and locked in. The dial-in air entrainment assembly is affixed to a standard aerosol mask. A high humidity adaptor permits use of a nebulizer with mask if prescribed.

Find the Right Parts
Ordering Information for Salter Labs® Percent-O2-Lock® Venturi System
| Description | Per Case | Part No. |
| Adult Percent-O2-Lock® air entrainment system with humidity cup, 7' (2.13m) oxygen supply tube and mask, elastic headstrap |
50 | 8150-7-50 |
| Adult Percent-O2-Lock® air entrainment system with humidity cup, 7' (2.13m) oxygen supply tube and mask, over-the-ear style |
50 | 8050-7-50 |
| Adult Percent-O2-Lock® trach tee air entrainment system with humidity cup and 7' (2.13m) oxygen supply tube |
50 | 8054-7-50 |
| Adult Percent-O2-Lock® air entrainment assembly with humidity cup without mask or oxygen supply tube |
50 | 8056-0-50 |
| Adult Percent-O2-Lock® air entrainment assembly without mask, oxygen supply tube or humidity cup |
50 | 8057-0-50 |
| Adult Percent-O2-Lock® air entrainment assembly with 7' oxygen supply tube and humidity cup without mask |
50 | 8058-7-50 |
| Adult Percent-O2-Lock® air entrainment assembly with 7' oxygen supply tube without mask or humidity cup |
50 | 8059-7-50 |
| Pediatric Percent-O2-Lock® air entrainment system with humidity cup, 7' (2.13m) oxygen supply tube and pediatric mask, elastic headstrap |
50 | 8121-7-50 |