Most people believe contamination comes from a mistake during operation.
In reality, contamination doesn’t “happen” in one moment —
it already exists before you begin.

A “Perfect” Operation That Still Failed

In a GMP cell preparation lab, an experienced technician was performing a routine media change. He followed every step precisely—gowning, hand disinfection, biosafety cabinet operation, fluid handling. Everything was controlled, stable, and by the book. There were no errors.

But a few days later, something changed. The medium turned cloudy. Cell morphology became abnormal. Growth slowed, then failed completely.

His first instinct was the same as everyone else’s:
“Something must have gone wrong during that operation.”

But nothing had.

What Really Happened (The Invisible Process)

Before he even entered the room, microorganisms were already present in the air—circulating silently through the HVAC system. Some had settled on surfaces: the workbench, the bottle neck, the edges of equipment. They were few, inactive, and completely unnoticed.

The moment the culture vessel was opened, they had their opportunity.
Carried by airflow, tools, and liquid handling, they entered the system.

For a few days, everything appeared normal.
But at a microscopic level, they were adapting, multiplying, spreading—until they reached a level that disrupted the entire culture.

And when the next operation began, they didn’t disappear.
They returned to the environment, redistributed by airflow and handling.

A cycle had already formed.

Why Disinfection Didn’t Work

He tried everything—alcohol wiping, extended UV exposure, repeated cleaning. Each time, the problem seemed temporarily reduced, only to return again.

The issue wasn’t effort. It was scope.

Traditional disinfection only treats what you can see and reach.
It does not address:

• Airborne microorganisms in HVAC systems
• Internal contamination within biosafety cabinets and incubators
• Hidden structural spaces that continuously release microbes

As long as these sources remain, contamination will always come back.

The Turning Point: System-Level Diagnosis

When Vantsteri engineers arrived, they didn’t start with disinfection.
They started with investigation.

Through microbial testing and environmental analysis, they identified the real issue:

• Continuous microbial circulation in the air system
• Residual contamination inside equipment structures
• Hidden zones acting as persistent contamination sources

This wasn’t an operational issue.
It was a system contamination problem.

The Solution: Full-Space Decontamination

After identifying the source, Vantsteri implemented a completely different approach:

• Root cause tracing using an in-house microbiology laboratory
• Full-space decontamination using Vaporized Hydrogen Peroxide (VHP)
• Coverage of HVAC systems, biosafety cabinets, incubators, and hidden areas

Unlike surface cleaning, VHP disperses as a gas, reaching every corner—
including areas that are impossible to access manually.

This breaks the contamination cycle at its source.

The Result

A few days later, the lab returned to normal.
No contamination. No instability. No recurrence.

For the first time, the system was truly clean.

And that’s when he realized:

👉 The problem was never the operation.
👉 It was the environment all along.

The Reality

Cell contamination is not a single-point issue.
It is the result of air, surfaces, and equipment interacting as a system.

If you only clean the surface,
the system will continue to contaminate itself.

How to Truly Solve Cell Contamination

Real solutions require:

• Contamination source identification
• Pathway analysis
• Full-space decontamination

Not repeated cleaning—but system reset.

Vantsteri Capability

Vantsteri has successfully resolved hundreds of contamination cases, including:

• Mycoplasma
• Fungal contamination
• Viral contamination

With a proven approach combining:

• Microbial source tracing
• Full-space VHP decontamination

👉 No result, no charge.

Contact Us

🌐 www.vantsteri.com
📞 +86-400-135-0535

Vantsteri – Your Partner in Contamination Control