oxygen

Hello, When using an oximeter or a similar device to monitor oxygen levels during freediving, what is the percent/number that you should start to ascend for (ex. do I start ascending at 90% ,80% , etc.?) I know the precents can vary between beginners and advanced free divers so I want to know...

Up for sale is a Hydraulics International Oxygen Booster model 3G-SS-20-O. This is a great little booster that is perfect for filling rebreather bottles or with enough time, 40 or 80 ft.³ bail out bottles. It can be driven with a home air compressor at 150 psi. 150 Psi drive gas will allow...

We are currently in the process of putting together an 02 kit for the car... The prices and more importantly the limited size of tanks is putting us of a buying a full commercial kit.. So instead we have decided on putting something together ourselves.. We got a good deal on a 7ltr, 2 year old...

Supposed a diver in a remote location was suffering from a decompression Illness and all you had available was industrial oxygen... could you, should you, would you administer it to the diver? Discuss.

Hello everyone, (long-time lurker, first-time poster). Background: I am a diver from Czech Republic, OC, highest qualification would be Cave. Mostly diving dams or freshwater lakes nearby. I usually switch between SM and BM, but the question is only for open water "deep" (40-50m) dives...

I tried looking on google scholar, as well as other posts on this forum. I can't find any evidence based articles to support whether nitrogen off-gassing is more efficient at 10ft or 20 ft when decompressing on 100% oxygen. I'm looking for actual evidence based studies that can help...

Hello all, We've come across a few posts regarding Oxygen and CO sensors when testing Oxygen concentrations and the presence of CO, We'd like to help with any technical questions or support any members have. DD-Scientific

I'm selling an Aqualung Navigation Board. Very good condition, works great. With protection bag and travel bag. This kind of navigation board is generally used with military oxygen ventral rebreather (like LAR, Oxygers, Frogs, OMG Caimano,....) Price is $600.

I'm convinced of the benefit of analyzing tanks for O2 percentage and presence of CO (carbon monoxide). I was a kickstarter supporter of Cootwo, and still think it was a great concept and form factor. I was unhappy with the lack (and tone) of support from Divenav in the past. On my last dive...

Seems that Airspeed Press has gone out of business? Does anyone know any specifics? Would they sell the business and/or rights to the books? Would they sell the business and/or rights to the books? As many have experienced, their website is still up but with limited functionality. No online...

Hi dear friends, For the ones in the USA, do you know if there's any possibility to buy an oxygen emergency kit with an HSA/FSA account? First aid kits are supposed to be covered. If the ones sold by DAN are not covered. Any other idea? Thanks everyone

Nitrox and Scuba Gasses - Full Version I finally put this to video for posterity. A nitrox workshop plus alpha! Get a full overview of nitrox and all scuba gases and how they are used in scuba and how they relate to each other. An overview of how and why recreational divers vary gas mixes to...

For sale is the following. PayPal or Venmo net to me, buyer responsible for applicable fees. Shipping at cost via USPS Flat Rate or pickup available in Chicago (or in N FL Feb 20 to Mar 1) (1) Chris Kennedy GAF Oxygen Needle Valve. Used on four dives before switching to something else. Swagelok...

Good Afternoon All, First post on ScubaBoard ... yay! I'm in the process of tec training, and have a handful of questions regarding Best Practices for O2 Reg & Deco Bottle care. Of course, this is something I'll learn more about in my courses and will discuss with my instructor, but I've also...

DAN Rescue Pak - Emergency Oxygen Kit DAN Rescue Pak - Soft Case - $250 or best offer Currently the Jumbo D cylinder has just over 2000 psi in it. The hydro date has expired. I used this DAN Rescue Pak to support the scuba and rescue classes that I used to teach. I no longer have a need for...

How would you go about blending Oxygen and Hydrogen? Assuming the final blend results in an Oxygen concentration that is below the safety limit for explosions (say 3% O2 97% H2), would it be safe to just setup a Stick and run the blend into a compressor, making sure the system is properly...

Hello, I have a technical question regarding the mechanism through which Oxygen helps with DCS symptoms. I am aware that it is an effective treatment, but I'm not clear on what actually happens inside the body as the Oxygen is breathed to help dissolve gas bubbles in the tissues. What are the...

question for the masses...I have access to a compressor so air fills for me are accessible 24/7. That being said I want to go out and buy my own O2 tank so I can partial pressure blend my own nitrox. What is the cost of a just say 200 or 300 medical grade O2 tank? Trying to see if it’s cost...

I can't seem to find any info on the subject for analyzers, most are recommendation for rebreathers. I am doing a project on an Arduino based O2 analyzer. I would like to know if there is a cutoff voltage value (in air) for the sensor to be considered "bad" and lose its linearity significantly...