Specialist provider of
Portable and Medical Oxygen Solutions

UK Telephone Number
0870 712 0202(UK - 24hr)
UK Freephone 9 to 5pm
0800 145 59 02 (UK 9 to 5pm)
International Telephone Number
0044 161 747 2617 (INT)
Questions and Answers

Questions and Answers


Do you sell portable oxygen concentrators?

In the 1990s the Pure O2 concept was developed: to be the leading provider of medical oxygen solutions to suit all needs. Since then, the group have been at the forefront in providing oxygen services, and have created innovative relationships within the medical sector. Pure O2 pride themselves on their outstanding reputation, gained through working closely with the NHS, private institutions, doctors dispensaries, businesses, charities, and of course private patients. We have for many years supported thousands of our patients with affordable solutions to ensure they carry on enjoying the quality of life they deserve.

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Do you rent portable oxygen concentrators?

Pure O2 specialise in providing the latest portable and stationary concentrators for oxygen users whilst travelling. A holiday provides a change of scenery and a change from the routine of daily life. Here at Pure O2 we believe arranging medical oxygen should be as smooth and stress-free a process as possible. Whether you live in the UK or are travelling from abroad, Pure O2 have many solutions to suit all requirements. Our specialist rental department is open 24/7, with all our advisors fully qualified to help you make the most of your forthcoming holiday. Our prices are very competitive, as our reputation depends on this, after all. We deliver to fixed UK addresses or hotels, or alternatively personal collection can also be arranged. All holiday rentals are VAT exempt, with complementary delivery service and collection service once your holiday has ended.

Click here to view our rental page

Do you offer ex-demo & pre-owned equipment?

Subject to availability, Pure O2 offer a wide range of ex-demonstration and pre-owned units, providing patients with money-saving options. All our ex-demonstration units have been in the experienced hands of our many medical representatives when presenting to patients or to the private sector, and these units are in excellent condition when presented to our sales team - a wonderful way of saving those extra pennies.

Click here to view our exchange centre

Do I need a medical note?

Most major airlines now accept portable oxygen concentrators on board for use when flying, or to carry as hand luggage in advance of arriving at your destination. In most cases a ‘fit to fly’ test is carried out, and this document will be required for airline boarding purposes. Always remember to check that the airline you are planning to use will accommodate all your medical needs. And always plan your battery time! All airlines ask that you have more than enough battery power to use your POC during, before and after the flight. The luxury of purchasing or renting from Pure O2 means that there is a medical member of the team to help with any questions or queries the airline will present.

What about VAT?

If you are a resident of the United Kingdom or Northern Ireland, and you are registered disabled and/or suffer from a chronic illness, VAT exemption is available on some products, including portable oxygen concentrators from Pure O2. If you are visiting the United Kingdom, VAT is charged on your purchase and can be claimed back when leaving via an airport by producing your invoice and a VAT 407 form, which a member of the medical team will be happy to provide for you. For more information please call us on +(44) 161 747 2617.

If you are in any doubt as to whether you are eligible to receive goods or services zero-rated for VAT, you should consult Notice 701/7 (VAT reliefs for disabled people) or contact our National Advice Service on 0845 010 9000 before signing the declaration.

Are there any discounts offered?

As Europe’s largest independent oxygen company, we offer many discounts on a wide range of products and units. It gives you peace of mind knowing that you’re dealing with the best oxygen company, as we always provide products such as portable oxygen concentrators (POCs) all at competitive prices. Our Best Buy Guarantee ensures that we will not be beaten on price, or on the standard of service given to each individual enquiry.

Can I use oxygen on an aircraft?

Most major airlines now accept portable oxygen concentrators on board for use when flying, or to carry as hand luggage in advance of arriving at your destination. In most cases a ‘fit to fly’ test is carried out, and this document will be required for airline boarding purposes. Always remember to check that the airline you are planning to use will accommodate all your medical needs. And always plan your battery time! All airlines ask that you have more than enough battery power to use your POC during, before and after the flight. The luxury of purchasing or renting from Pure O2 means that there is a medical member of the team to help with any questions or queries the airline will present.

Commonly used airlines that accept portable oxygen concentrators

How do oxygen concentrators work?

An oxygen concentrator is an electrically-powered machine that separates room air into nitrogen and oxygen. The nitrogen is discarded, while the pure oxygen is stored, concentrated, and delivered at 90 to 95 percent purity. An oxygen concentrator does not require top-ups of oxygen, as found with cylinders.

What should I know when using oxygen overnight?

A pulse-activated machine should not be used overnight unless your doctor or respiratory clinic confirms that it is safe to use. If a continuous flow is recommended – and in many cases this is the only flow that patients should sleep on – then the Sequal Eclipse 3 portable oxygen concentrator is advised, as it is undoubtedly the best concentrator for supplying a continuous flow for overnight oxygen users. If you suffer from sleep apnoea, you will no doubt be using a CPAP, BiPAP or other ventilator system whilst you are sleeping overnight. The Sequal Eclipse 3 unit will not only provide you with continuous flow, but allows you to connect your chosen ventilator for sleeping. Pulse oxygen is not often recommended for overnight use, as some patients may fail to activate the oxygen trigger on the device and therefore have periods of no oxygen delivery. Some patients can sleep with their mouths open and waste a lot of oxygen that is delivered by pulse on each intake on breath. If you are concerned about this, please call us and speak to one of our medical team, who will be happy to talk you through any concerns you may have.

What if my LPM (litres per minute) goes up?

In the event of a patient’s LPM increasing, we offer the option of an assessment with the view to part-exchange against a more powerful portable oxygen concentrator.

Why should international manufacturers carry CE, ISO:13485 and FAA approval?

These are general accreditations that show the manufacturer is showing due diligence when supplying medical products to be exported. The CE mark is a key indicator of a product’s compliance with EU legislation, and enables the product to be supplied within the European market. ISO:13485 is an ISO standard, published 2003, and represents the requirements for a comprehensive management system of medical devices. FAA (Federal Aviation Agency) approval is required for a portable oxygen concentrator to be used on an aircraft. Most commonly approved devices are manufactured by Airsep, Inogen and Sequal.

Whats the difference between continous flow and pulse flow oxygen?

Continuous flow oxygen is an uninterrupted supply of oxygen that can be supplied by nose cannula, face mask, or in conjunction with most other breathing devices. Continuous flow oxygen devices are often operated by AC mains supplies and provide reliable oxygen 24 hours a day. In most cases patients are best using this method of oxygen delivery when sleeping or resting. 

Pulse flow oxygen is delivered on activation of breathing and is commonly known as 'pulse on demand'. Oxygen is delivered via a nose cannula only, and supplies short doses of oxygen on inhalation. Modern portable concentrators can detect when a patient is going to breathe and release the required amount of oxygen – an incredible piece of technology, I’m sure you’ll agree. These devices are often very lightweight and can supply oxygen over a long period of time, making them ideal for day-to-day activities and for travelling. 

How much is delivery?

Pure O2 never charge for delivery*. Even though we won’t take a penny off you, the next-day delivery service we offer is professional and reliable – we wouldn’t have it any other way.

*UK mainland only.

How do I prepare myself before going on holiday?

Always be sure to research the city or state that you will be visiting. It does sound obvious, but high or low altitude can affect your breathing. Check that you are healthy enough to travel; nothing ruins a holiday or break away faster than ending up in a hospital bed. Arrange a ‘fit to fly’ test if you are flying to your holiday destination. Book with an airline that will accommodate all your medical requirements. Be aware of your local oxygen suppliers and hospitals at your holiday destination, in case any situation should arise. If you require 16+ hours of oxygen a day, ask one of our medical team about travelling with a second portable concentrator. If you already own a portable oxygen concentrator, why not book a service or maintenance check? Pure O2 can handle any concerns you may have regarding this. If you plan to use a portable oxygen concentrator abroad, a surge protection plug or adaptor may prove useful. Most other countries don't have a reliable electrical mains supply like the UK! Have a chat to your respiratory clinic for any advice and tips on travelling. Check with the British Lung Foundation for any additional advice they may have, and don’t forget they deal with many patients who may well have similar concerns. It is advised by Pure O2 to always carry a doctor's note stating you are on oxygen, and what levels you should be using - this will assist if an emergency occurs.

Who uses oxygen?

People with respiratory diseases are the most common users of oxygen - please click here for a list of respiratory conditions. Oxygen can also be used for heart conditions, cluster headaches, ME, chronic fatigue, MS and cancer patients.

Do you offer a buy-back service?

Occasionally Pure O2 will offer a buy-back scheme, depending on the age and condition of the unit in question. We always try and offer a fair price for this specific service.

What about warranty?

Pure O2 offers a full warranty on all of our products. We offer between three- and five-year warranties on our medical oxygen range.

What if problems occur?

Unfortunately Pure O2 don’t have a crystal ball that shows us if a problem is going to occur. However, we do cross all the T’s when providing portable oxygen concentrators to all our patients. Whether you are in the UK or abroad, if a problem arises, Pure O2 will endeavour to get a backup loaner unit to you as quickly as possible. With our extensive team on hand 24/7, any issues are always dealt with immediately. For more information about our servicing and maintenance, follow this link: link to services and support page.

What are the effects of low oxygen?

It is important to use your oxygen exactly as prescribed; low oxygen levels can cause poor concentration, forgetfulness, shortness of breath when walking a short distance, cramping of leg muscles, swollen ankles, blueness of fingertips and lips, fatigue, headaches, decreased quality of life, decreased exercise tolerance and recurring chest infections. Oxygen therapy used in the correct way can make a difference in how you feel and how your body functions on a daily basis.

Should I exercise on oxygen?

Well, let’s be honest – physical exercise is an essential part of everyday life, so the answer to the question is YES! But why? Exercise is not harmful to people with COPD; it will improve general fitness and give you the feeling of wellbeing. One of the main symptoms of COPD is breathlessness but, although this breathlessness may cause anxiety, it is NOT dangerous. Increasing your activity level and improving your fitness will, in a short period of time, reduce your sensation of breathlessness, not make it worse. When you are at rest, you normally take about 12-15 breaths a minute, giving you around 10-12 litres of air to supply your body with the oxygen it needs. When you move around and carry out any daily activity, such as walking, cleaning or shopping, your lungs have to respond to your body’s increasing requirements for oxygen. For you to be active, your muscles need to produce more energy, and to do this they need oxygen. Without oxygen, your muscles easily become tired, making it harder to be active. People with COPD slowly begin to find that they cannot provide enough oxygen for their muscles to perform certain activities without feeling breathless. Feeling breathless is unpleasant and can make you anxious, so be sensible and build up gradually to try and prevent unnecessary breathlessness. Start by walking a short distance, and gradually increase the distance you walk, or the length of time you exercise. Even if your COPD is more severe, it is worth keeping as active as possible. Begin slowly by doing gentle arm and leg movements while you are sitting down. Then set a target such as walking from one room to another, to the front door, and into the garden. The more activity you can manage, the less breathlessness and fear of becoming breathless you will experience, and the better will be your quality of life.