How to Store Spare CO₂ Laser Tubes the Right Way

Many factories and workshops like to keep spare CO₂ laser tubes on hand. It makes sense—you don’t want production to stop just because a tube fails.

But here’s something people often overlook: even unused tubes can “age” or fail early if stored the wrong way.

Let’s go through a few things Puri Laser has learned from years of experience.

1. Keep Them Away from Humidity

CO₂ laser tubes have a vacuum cavity inside, which means moisture is their enemy.

Too much humidity can cause oxidation on electrodes and connectors, slowly killing performance before you even install the tube.

The simple rule? Store them somewhere dry and well-ventilated.

Puri Laser suggests keeping humidity below 70%. If your space feels damp, consider using desiccant or a dehumidifier.

2. Avoid Big Temperature Swings

Glass doesn’t like sudden temperature changes.

When the air goes from hot to cold—or the other way—the glass expands and contracts, adding stress that can lead to tiny cracks over time.

Find a stable environment.

No direct sunlight. No heaters nearby. Just a steady, comfortable temperature where your laser tubes can “rest easy.”

3. Don’t Toss the Packaging

It might sound obvious, but it happens all the time.

People unpack their spare tubes, check them once, then leave them on a shelf. Without the original packaging, the tube loses its best layer of protection.

Puri Laser ships every tube with double-layer shockproof packaging—foam inside, firm box outside.

Keep that box. It’s made for exactly this purpose.

4. Give Them a Quick Check Once in a While

Even if the tubes are sitting still, it’s good practice to check them every few months.

Look for signs of dust, moisture, or any cracks around the electrodes.

If something doesn’t look right, reach out to the factory or after-sales support instead of guessing.

Puri Laser’s team helps distributors and users check storage conditions all the time—it’s better to ask early than lose a tube later.

5. Plan Your Stock Cycle

Laser tubes aren’t like metal parts—they have gas inside, and that gas slowly loses strength over time.

So don’t stock more than you’ll use in a year.

At Puri Laser, we usually suggest keeping enough inventory for six to twelve months of production, depending on your workload.

Final Thoughts

Proper storage may sound simple, but it’s often what separates a tube that lasts two years from one that fails before use.

Puri Laser doesn’t just build high-power, long-life CO₂ laser tubes.

We also share what we’ve learned—so our partners can keep their machines running smooth and their spare tubes safe.

When you work with Puri Laser, you’re not just buying a product. You’re gaining a bit of peace of mind.