How to tell if a co2 cartridge is empty

How to tell if a co2 cartridge is empty?

CO2 cartridges are a popular and convenient way to power air guns and other pneumatic devices. These small cylinders contain pressurized carbon dioxide, which is released when the cartridge is activated. Knowing how to tell if a CO2 cartridge is empty is essential for anyone who uses these devices, as an empty cartridge can cause damage or malfunction of the device it is powering. In this article, we will discuss some methods for determining whether a CO2 cartridge has been fully used up. Read on to learn more about how you can tell if your CO2 cartridge is empty.

How to tell if a co2 cartridge is empty?

Here are the steps to tell if a co2 cartridge is empty:

1. Check the Pressure Gauge or Air Valve

One way to tell if a CO2 cartridge is empty is to check the pressure gauge or air valve. This involves connecting the cartridge to the appropriate air valve and then checking the pressure gauge for a reading. Generally, readings below 700 psi (pounds per square inch) indicate an empty cartridge.

You may also hear a hissing sound coming from the pressure gauge or air valve if the cartridge is empty or nearly so. It’s important to make sure that your equipment is compatible with your CO2 cartridge before taking any pressure readings.

2. Listen for an Empty Cartridge

When trying to tell if a CO2 cartridge is empty, it’s important to listen for certain signs that indicate an empty cartridge. Most CO2 cartridges, when empty, will make a hissing noise similar to air being released from a tire. This noise indicates that the CO2 inside the cartridge has been depleted and there is no more pressure remaining in the cylinder.

Additionally, you may hear a faint clinking sound as the cartridge empties out. It’s important to note that not all CO2 cartridges will make this noise when they are depleted. Some may be completely silent as they exhaust their gas supply. If you don’t hear any sound coming from your cartridge, it is still possible that it is empty and needs to be replaced.

3. Shake the Cartridge

Shaking the cartridge is an effective way to determine if it is empty. When a cartridge is full, it will feel heavy and solid when shaken. Conversely, when an empty cartridge is shaken, it will sound hollow and light.

Additionally, an empty cartridge may also rattle or vibrate more than a full one. To help distinguish between a full and empty CO2 cartridge, try shaking multiple cartridges together – if there is one that stands out from the others in terms of vibration or sound then it could be an indication that the cartridge is empty.

4. Weigh the Cartridge

Weighing the cartridge is a reliable way to check if it is empty or not. It takes very little effort and provides an accurate result. The weight of the CO2 cartridge will be different when it is full than when it is empty, so this method can be used to determine whether or not the cartridge has been depleted. To do this, you will need a kitchen or postal scale that can measure in grams or ounces. Place the CO2 cartridge on the scale and take note of the weight reading.

A full 16-gram cartridge should weigh around 20-22 grams with its protective cap. If the reading is significantly lower than that, then it is likely that the CO2 levels have been depleted. Similarly, a 12-gram cartridge should weigh around 17-19 grams with its cap on if it is full. The weighing method can also be applied to other sizes of cartridges as well. For example, a 24-gram CO2 cylinder should weigh around 28-30 grams with its protective cap on if it still contains gas. Any reading significantly lower than that indicates emptiness and means that you will need to purchase a new one.


When it comes to determining whether a CO2 cartridge is empty or not, the best way to do so is by using a pressure gauge or air valve, listening for any sound of an empty cartridge, shaking the cartridge and weighing it. By taking these steps, you can easily determine if your CO2 cartridge is empty and can properly dispose of it accordingly.

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