What Annex 1 expects during setup
Product-contact components should be introduced into the system in a pre-sterilized condition whenever technically feasible. Ideally, this is achieved through rapid transfer ports (RTP) or material transfer locks while the isolator doors remain closed. Direct contact between gloves and critical components should also be avoided during setup. Every intervention that remains should be pre-defined, described, risk assessed, and covered by aseptic process simulation.
In other words: the fewer open-door transfers and the less glove contact with sterilized surfaces, the stronger your contamination control strategy.
Where setups typically lose control
- Direct glove contact with sterilized product-contact surfaces during setup
- Open-door transfers of components that could have entered through an RTP port or transfer lock
- Extended interventions caused by parts that are hard to grip, align, or torque through gloves
- Repeated corrective interventions after a poorly controlled first-time installation
- Glove damage from sharp components such as filling needles and dosing parts
Using dedicated handling and installation tools — such as removable equipment handles — can help facilitate an efficient, controlled, and Annex 1-compliant setup, because the operator manipulates the tool rather than the sterilized component.
What a good intervention tool looks like
A tool that sits inside the critical zone is part of your aseptic design. It should be specified with the same rigour as any other format part:
- Cleanable, crevice-free geometry with surface finishes suited to sporicidal agents
- Materials compatible with VHP, IPA, and the chemistries used in your decontamination cycle
- Grip and leverage designed for gloved, gauntleted hands at real reach distances
- Positive retention so components are never dropped inside the critical zone
- Dimensional fit to your specific filling needles, pumps, manifolds, and format parts
- Documentation: drawings, materials of construction, and inspection records for your file
Filling needle installation and removal
Needle changeover is the setup most operations want to shorten. Dorado Built designs installation and removal tools around the specific needle, pump, and manifold geometry of your line, so the operator can pick up, present, align, and seat the needle without gripping the sterilized surface — and remove it afterwards without risking a glove puncture. The result is a shorter, more repeatable intervention that is easier to defend in an aseptic process simulation and in front of an inspector.
Frequently asked questions
Does Annex 1 require intervention tools?
Annex 1 does not name specific tools. It requires that interventions be minimized, pre-defined, and performed in a way that protects the sterility of product-contact surfaces. Dedicated handling and installation tools are a practical way to meet that expectation, and they should be described in your contamination control strategy.
How should tools be introduced into the isolator?
Like any other item entering the critical zone, tools should be sterilized or decontaminated by a validated route — typically autoclaved and transferred through an RTP port, or included in the load exposed to the isolator decontamination cycle. Materials must withstand that route repeatedly.
Do the same principles apply to RABS?
Yes. The separation is different, but the objective is the same: fewer, shorter, better-controlled interventions with no direct glove contact on sterilized product-contact surfaces.
What about filling needle changeovers?
Needle installation and removal is one of the highest-risk routine setups: small parts, tight clearances, sharp tips, and gloves under tension. Purpose-built installation and removal tools shorten the intervention, protect the gloves, and improve first-time-right assembly.
Have a setup you want to make easier?
Tell us about the intervention and we will propose a tool designed around it.