Medical Gas Cylinder Sizes

The guide above will assist you when ordering medical gas. Currently, we offer four different cylinder sizes ensuring we meet the needs of our customers.


Free Delivery Online Ordering

Save time during your busy day, place your order for gas 24/7 through our easy online ordering system.

Save time during your busy day, place your order for gas 24/7 through our easy online ordering system.


No Admin Fees Friendly Service

We have no administration fees, no invoice fees, no credit card fees and no handling fees! If you have an issue we are just one call away.

We do not outsource our delivery drivers, all medical gas deliveries are made by our own customer service support team who are happy to help with any queries you may have.



Contact our team for pricing

1300 881 824
Use our medical gas cylinder calculator to work out how much you need. Simply state how many Litres Per Minute (LPM) you need and compare the different
cylinder sizes. 


How long will my Medical Oxygen cylinder last?


Select LPM: 


Cylinder Size:
Hours : Minutes



Medical Gas Suppliers Sydney


Types of medical gas


There are many different types of medical gas. Each has their own purpose and advantages but when used incorrectly, the gas can cause a detrimental impact on the body. 

If you work with medical gas then it’s imperative you understand the different types and what each is used for. 
Likewise, if your doctor prescribed you with medical oxygen, then it’s important you understand the information provided to you ensuring correct usage and minimising any other medical oxygen health risks. 

Before you’re ready to order, it’s important to know:

What types of medical gas you require
How much medical gas you need to purchase (our gases come in different size cylinders)
Any safety precautions 
Where to store the gas when delivered

Medical Oxygen


Oxygen is colourless, odourless and tasteless. It will vigorously support combustion and sustain life. It is supplied as a compressed gas in high pressure metal cylinders. 

In respiratory therapy, medical grade oxygen is administered to increase the amount of oxygen and thus decrease the amount of other gases circulating in the blood. 


Uses and Applications of Medical Oxygen
Oxygen resuscitation/Therapy 
Sedation or Anesthesia/Analgesia

Safety Precautions when using Medical Oxygen 

Medical Oxygen patients may experience coughing, breathing difficulties, dizziness, convulsions and loss of consciousness after several hours of exposure of Medical Oxygen. Liquid oxygen may also give cold burns and/or destroy tissues.

Available Cylinder Sizes

C - 420L
D - 1900L
E - 4,300L
G - 10,000L

Cylinder Specifications - Medical Oxygen

   C D
Contents  410L  1900L  4300L 10000L
Cylinder Pressure @ 15ºC  15000 kPa 14300 kPa 16500 kPa 17900 kPa
Weight (Full)  3.36 kg 13.6 kg 30.0 kg 70.0 kg
Weight (Empty)  3.14 kg 11.5 kg 24.0 kg 58.9 kg
Cylinder Height  500mm  645mm 880mm 1510mm
Cylinder Diam./Width  110mm  180mm 204mm 230mm

Updated as at 11th December 2013. 

Read our Medical Oxygen Supplied by Mega page for more information. 

Information for In Home patients can be found on our Oxygen Therapy page. 

 Medical Oxygen MSDS

 Consumer Information


Medical Nitrous Oxide

Nitrous Oxide is a non-flammable, colourless oxidising gas with a slightly sweetish taste and odour. 

Nitrous Oxide is widely used as a base anaesthetic generally supplemented by other agents. It is used extensively for relative analgesia and as a freezing agent in cryosurgery.

Uses and Applications of Nitrous Oxide

Sedation or Anesthesia/Analgesia
Freezing agent in cryosurgery 

Safety Precautions when using Nitrous Oxide

Do not drive a vehicle or operate machinery for at least 24 hours after using Medical Nitrous Oxide. General anaesthetics may cause a slight decrease in intellectual function and alertness for 2 to 3 days in some people. 

Available Cylinder Sizes
C - 940L
D - 3,200L
E - 8,000L
G - 18,400L

Looking for more information? Visit our Nitrous Oxide page or read: 

 Nitrous Oxide MSDS




Medical Air


Air, the earth's natural atmosphere, is a non flammable, colourless and odourless mixture of gases in which nitrogen and oxygen predominate. It is supplied as a gas in high pressure in steel or aluminium cylinders. 

Medical grades of air are used for human respiration in breathing apparatus, drive suction venturis and for surgical tools. 

Uses and Applications of Medical Air

Replacement atmospheric air 
Sedation or Anesthesia/Analgesia

Safety Precautions when using Medical Air

There are no side effects of taking Medical Air. However, tell your doctor if you do feel unwell after taking the medication.

Available Cylinder Sizes
C - 550L
D - 1,800L
E - 4,000L
G - 9,300L

Want to learn more about Medical Air? Read our Medical Air information page or look at the following document: 

 Medical Air MSDS




Medical Carbon Dioxide

Carbon Dioxide is a non-flammable, colourless and odourless gas. It is liquefiable under pressure, with refrigerant properties in the liquid phase and is supplied in cylinders as a liquid under its own vapour pressure of approx. 5,000kPa at 15C. 

Medical applications for Carbon Dioxide include its use as a pure gas or in specialised mixtures with other gases in stimulation of breathing & anaesthesia. 

Uses and Applications of Medical Carbon Dioxide

Sedation or Anesthesia/Analgesia 
Breath stimulation and regulation 

Safety Precautions when using Medical Carbon Dioxide

In the event you breathe in too much Medical Carbon Dioxide (more than 6%). In this case, you’re highly likely to suffer from headaches, confusion, high blood pressure, irregular heartbeat, rapid and heavy breathing. 

At even higher levels of Medical Carbon Dioxide (more than 8- 10%) you will be dizzy and become unconscious. 

At very high levels (more than 30%) in addition to unconsciousness, you will have extremely high blood pressure, very low heart rate and ECG changes. 

Convulsions may also occur. When you stop breathing in Medical Carbon Dioxide, all these effects are reversed.

Always follow prescribed instructions and seek medical advice if you feel unwell or think you may have taken too much Medical Carbon Dioxide. 

Available Cylinder Sizes

C - 1,800L
D - 5,900L
E - 14,500L
G - 30,000L

For more information visit our Medical Carbon Dioxide page or read

 Carbon Dioxide MSDS 


Transporting medical gas

Rest assured that your medical gas will safely arrive at your location. Our drivers are trained personnel are happy to help with your needs. 

At Mega Medical, we offer free medical gas delivery twice a week based on your location in the Sydney Metropolitan area. 

The following conditions apply for free delivery: 

*Sydney Metropolitan area only.

*Minimum $30 order total applies.
*Order must be placed by
3pm the business day before.
For client's located on the border of our delivery regions, a set of delivery days will be agreed upon. 
Visit our delivery page for more information. 

"Mega Medical are the preferred suppliers for fast and reliable medical gas delivery in Sydney."