Consumer trust
Helps reduce complaints tied to off-taste or contaminated returnable bottles.
ENOS Multi-Barrier System
ENOS A100 Multi-Barrier protection for returnable bottles.
ENOS Multi-Barrier starts with the ENOS A100: a complete inline inspection station that checks returned PET bottles before wash and refill, then removes suspect bottles automatically. If a line needs checks beyond that first barrier, ENOS reviews the operation and specifies which additional stations to add around it.
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ENOS A100 is the foundation.
Returned bottles can come back misused, carrying residues that affect taste, quality and consumer trust. ENOS A100 puts the inspection point before the washer, where suspect bottles can be removed before they move deeper into production.
The system replaces manual sniffing with repeatable inline inspection, automatic rejection and production records operators can use shift after shift. That makes ENOS A100 the practical Multi-Barrier starting point for most returnable PET lines.
How ENOS A100 protection works
The line prepares returned bottles, inspects them without contact, and removes suspect bottles before wash and refill.
- Prepare 1
Bottle preparation
Returned bottles are conditioned before inspection so residues are easier to identify consistently at line speed.
- Inspect 2
ENOS A100 inline inspection
The ENOS A100 sniffer checks each bottle without contact — vapor trace detection, drawing the air from inside the bottle and reading contaminants in it at trace level — replacing manual sniffing with a repeatable automated decision point.
- Reject 3
Controlled removal
Suspect bottles are automatically removed from the line while conforming bottles continue toward wash and refill.
What ENOS A100 protects
Catching suspect bottles before wash and refill protects the outcomes that matter most on a returnable line: consumer trust, product quality, operator confidence and uninterrupted production.
Product quality
Removes suspect containers before they can reach wash, fill and packaging.
Operator confidence
Gives teams a repeatable inline process instead of manual sniffing.
Line continuity
Supports automatic rejection and practical production records during daily operation.
What comes back in the bottle, and what catches it
A consumer can put anything into a returnable bottle, and no single physical principle finds all of it. Vapour analysis reads what evaporates. Optical inspection sees what dried on and never will. A liquid check catches what has no smell at all. A Multi-Barrier line applies all three, at the points where each one works best.
| What comes back | How it is caught | Where |
|---|---|---|
| Fuels, solvents and aromatics — gasoline, diesel, benzene, paint thinner | Vapour analysis, SAM and SOx detection modules | ENOS A100 |
| Ammonia, pesticides and fertilizers | Vapour analysis, NOx detection module | ENOS A100 |
| Perfumed cleaners, detergents and other surfactants | PEx module, plus the foam they raise during pretreatment read optically at the bottle bottom | ENOS A100 + Vision |
| Heavy residues that barely evaporate — motor oil, cooking oil, greases, silicones | Pretreatment doses and agitates the residue so its vapours rise into the headspace, then the detectors read them | ENOS SyncroJET → ENOS A100 |
| Odourless liquids — caustic wash carry-over, brine, water-based agrochemicals | Rejected on the presence of liquid itself, with no chemical identification required | ENOS DSI, ENOS EBS, ENOS A100 detection zone |
| Faint traces below the first barrier | Full-spectrum vapour analysis running at full sensitivity, because the first barrier already removed the strong signals | ENOS Mass Spec (optional second barrier) |
| Dried-on solids and films — paint, cement, adhesive, foreign objects | Optical inspection of the base, neck finish and — optionally — the sidewalls. No chemical signature needed | ENOS EBS, ENOS EBI |
| Structural damage and deformation — cracks, breaks, abrasions, capped bottles | Optical inspection of shape, height, silhouette and neck finish | ENOS DSI, ENOS EBS, ENOS EBI |
The barriers are ordered so each one protects the next. Aggressive contamination is removed up front, which is what lets the finer checks downstream run at full sensitivity instead of being saturated by strong signals — and it keeps contaminated bottles out of the wash water, where one bottle can affect many.
ENOS A100 core and line options
ENOS A100 is the foundation. Preparation, rejection and advanced verification equipment are specified around the needs of each line.
ENOS A100 Sniffer
ENOS Engineering’s core vapor-analysis sniffer for returned PET bottles and the foundation of ENOS A100-centered Multi-Barrier protection.
ENOS SyncroJET
A high-pressure water-jet injector upstream of the ENOS A100 that prepares each returned bottle so masked contaminants become detectable.
ENOS IR Vision Module
An infrared optical channel alongside the ENOS A100 that catches low-volatility contaminants and visible bottle artifacts the vapor channel cannot.
Quantum Linear Sorter
A synchronized segmented sorter that removes defective products or splits product flows with precise, smooth and gentle movement.
Rejection Systems
A family of push and divert systems that removes defective products downstream of inspection or operates stand-alone on existing lines.
ENOS Mass Spec Sniffer
A high-sensitivity verification option for lines with special validation requirements around ENOS A100-centered protection.
Specify ENOS A100 protection
Tell us your line speed, bottle formats and operating requirements, and we will scope the right ENOS A100-centered configuration.
Contact & Support