1L Scuba Diving Tank Equipment, Portable Mini Dive Oxygen Cylinder, with 15-20 Minutes Capability, S5000 Diving Oxygen Tank Full Set, Underwater Breathing Snorkelling Device with Adapter

Ned is not making things up, he is making the point that you should not trust a product when they cannot even use the right terminology. they are not oxygen tanks but air tanks. To be sold as a casual toy with no experience on the users part is folly. the only one making things up is you george. e.g, I have never dived with nitrox, just air.

I’m abit unsure why Ned Middleton, “expert diver” is falsely slandering these products and stating they’re gonna provide you with pure oxygen when the hand pump simply compresses air. Additionally divers aren’t usually breathing compressed air but instead nitrox. For recreational depths air is fine, the only issue with this product is the lack a maximum depth guidance which should be 20m or less.

If Neil Middleton has reported this item as dangerous and he clearly knows what he is talking about then why is this item that can kill still available for sale on Amazon, clearly no one is doing their due diligence regarding this item and it need removed from sale before someone really does get killed...AMAZON, please check out this item & remove if an expert tells you it is unsafe to use as it is...PLEASE

Firstly, Extracting pure ‘Oxygen’ from air is an expensive process which is not achieved with a hand pump!Secondly, Scuba divers do not use 'Oxygen' cylinders except in cases of emergency at the surface. Instead, they use 'Compressed Air.' This is ordinary air found above ground level anywhere in the world which is then compressed (with the use of an expensive 'Compressor') into the diving cylinder at great pressure. In simplistic terms, that compressed air is then eked out little at a time, to the diver throughout the length of the dive.Leaving aside all other issues I will explain the maths. The air we breathe is made up of 21% Oxygen which, when breathed at depths of over 85 metres (approx 275 feet) turns toxic (i.e. poisonous!) and will kill. BUT!, if those same diving cylinders were filled with 100% Oxygen it turns toxic at depths of just 10 metres (33 feet!) as any competent diving instructor will explain.One customer has asked if this is all the equipment his children need for scuba diving in their swimming pool. I wonder if he’s now checking the depth!!!If the manufacturers of this questionable item of equipment do not understand the basics of oxygen, air, depth and scuba diving in their most rudimentary forms they should NOT be making such equipment. Avoid all contact with this device. It is clearly not fit for purpose and certainly not fit for the minimum one star rating I am required to give.NM(Active diver/instructor for 45 years)