Packaging Leak Tester vs Headspace Gas Analyser: Which Do You Really Need?
If you are researching the best way to verify the integrity of your product packaging, you have likely come across two types of quality control equipment: the packaging leak tester and the headspace gas analyser.
Both play an essential role in packaging validation, but they are designed for very different applications. Choosing the wrong one could lead to unnecessary cost and unnecessary testing steps.
At Thirstland, we work with both biscuit manufacturers and crisp producers across the UK and South Africa, and the first question we are usually asked is:
Do I just need a packaging leak tester, or do I need to measure oxygen inside the pack as well?
Below is a clear comparison to help you decide.
What Is a Packaging Leak Tester?
A packaging leak tester checks whether a sealed pack has any holes, weak seals or micro-leaks that could allow gas, moisture or contaminants to enter or escape.
It is commonly used in industries such as:
- Biscuits and bakery
- Confectionery and non-MAP snacks
- Medical and pharmaceutical packaging
A packaging leak tester does not measure what is inside the pack. Its sole purpose is to confirm whether the seal is airtight.
When Is a Packaging Leak Tester Enough?
For products like biscuits, crackers and baked snacks, the answer is usually straightforward.
Most biscuit manufacturers do not use nitrogen flushing or modified atmosphere packaging (MAP), which means there is no protective gas mixture to preserve. The main concern is simply:
Does the pack stay closed after sealing?
In this scenario, a standard packaging leak tester is all that is required. There is no need to measure oxygen because there is no MAP environment to protect.
What Is a Headspace Gas Analyser?
A headspace gas analyser measures the residual gas levels inside sealed packs, typically oxygen (O₂) and carbon dioxide (CO₂).
This equipment is essential for snack manufacturers who use nitrogen flushing, such as:
- Crisp producers
- Nuts and savoury snacks
- Meats, cheese and fresh produce under MAP
The goal is to confirm that oxygen is kept low and nitrogen levels remain stable throughout the product’s shelf life. If oxygen levels rise, the food is at risk of oxidation, staleness or microbial spoilage.
Do Some Manufacturers Need Both?
Yes. If you are producing MAP-packed products, such as crisps or extruded snacks, then leak testing alone is not enough.
Even if the seal is intact, a pinhole could allow nitrogen to escape and oxygen to enter. In this case you must verify both:
- Is the pack sealed?
- Is the oxygen content within the acceptable range?
Many manufacturers assume they need to purchase a packaging leak tester and a separate headspace analyser, which often means two pieces of equipment, two workflows and twice the operator time.
Combined Packaging Leak Tester and Headspace Gas Analyser
To simplify this process, Aneolia developed Exos and Oxylos, which Thirstland supplies in the UK and South Africa.
Unlike other standalone leak testers on the market that require you to purchase a separate headspace analyser, Aneolia enables both tests in one single cycle. You can choose:
- Leak test only, suitable for biscuits and non-MAP snacks
- Leak test plus oxygen headspace analysis, ideal for crisps and nitrogen-flushed packs
This approach is faster, more cost-effective and easier for operators, as there is no need to perforate the pack twice or transfer samples between machines.
Quick Comparison
| Application | Packaging Leak Tester Only | Leak + Headspace Gas Analysis |
|---|---|---|
| Biscuits / Crackers | ✅ Yes | ❌ Not required |
| Crisps / MAP Snacks | ❌ Not enough | ✅ Essential |
| Medical / Pharmaceutical Packs | ✅ Yes | ❓ Sometimes required |
| Meat / Dairy Under MAP | ❌ Not enough | ✅ Required |
Which Packaging Leak Tester Is Right for You?
If you are unsure whether you need leak-only testing or combined leak and oxygen analysis, Thirstland can help you define the correct setup based on:
- Your product type
- Your packaging format
- Whether you use nitrogen flushing or MAP
We can supply Aneolia’s Exos and Oxylos in configurations for leak testing only or leak plus headspace gas analysis, depending on your production requirements.
If you are looking for a packaging leak tester that can grow with your needs, contact Thirstland for a no-obligation demonstration.
