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| Home > Fills |
| SCUBA Cylinder Fills |
| Underwater Unlimited offers a varity of diving gas fills. Our certified air delivery system is tested every 90 days for purity and quality. Our goal is to provides you with the very best and safest in scuba tank fills. Technical divers: Underwarer Unlimited specializes in Nitrox fills and Trimix fills we ONLY use Ultra High Purity gas from Praxair the first and only gas manufacturer to offer "Diving Grade" gas. |
| • Learn More About Our Ultra Pure, Oxygen Compatible Breathing Gases |
| Offering Ultra Pure - Oxygen Compatible Breathing Gases: |
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• Air:
Grade OCA (GUE)
• Nitrox:
32%, 36%, 40%, 50%, 80%,and Custom Blends
• Trimix:
21% Oxygen / 35% Helium,and Custom Blends
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• Oxygen:
Grade ABO (Aviators Breathing Oxygen)
• Helium:
Grade UHP (Ultra High Purity - 99.999%)
• Argon:
Grade HP (High Purity - 99.9%)
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| Fill Pricing All gas is sold by the fill. |
| Gas |
Description |
Cost |
| AIR (Filtered to Oxygen-Compatible Air specification) |
21% Oxygen content |
$4 |
| Nitrox |
Choice of 32%, 36% Oxygen content |
$9 |
| Nitrox -Deco |
Choice of 50% to 100% Oxygen content |
$12 |
| Trimix |
Choice of 30/30 or 21/35 |
$22 |
| Trimix |
Choice of 18/45, 15/55 |
$26 |
| Topoff |
Topoff not exceeding 300psi |
$N/C |
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Additional fee: $5.00 for custom gas blends other than our standard gas blends.
Our standard blends are Nitrox 32, 36, 40, 50, 80, Trimix 30/30,21/35, 18/45, 15/55.
| Fill Policy |
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Diver Certification:
You must provide documentation that you are a certified diver in order to fill a SCUBA cylinder. Additional certifications are required for Nitrox and Trimix fills.
Maximum Fill Pressure:
The cylinder will be filled to its rated maximum pressure.
Labeling:
If the fill is to be with anything other than air, the cylinder must be clearly marked with the contents. The contents must be analyzed with the actual analysis and maximum operating depth tagged on the cylinder.
Oxygen Service:
Cylinders receiving a gas containing greater than 40% oxygen must be rated for oxygen service.
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Gas Quality:
All breathing gas fills are with Ultra Pure oxygen-compatible quality gases.
Hydro-Static Test
The cylinder must have had a hydro-static test within the last five years.
Visual Inspection:
The cylinder must have had a Visual Inspection within the last 12 months. Aluminum 6351-T6 alloy cylinders only must also have had an inspection by Underwater Unlimited that included an eddy current test.
Dropoffs:
You are welcome to leave your cylinder with us for filling and return at a later time to claim. Underwater Unlimited is not responsible for cylinders left over 60 days.
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