Reprocessing a flexible endoscope can cost hundreds of dollars per cycle — and every bit of that work is wasted if the scope is stored wet in an unventilated closet. Residual moisture inside endoscope channels is one of the biggest drivers of microbial growth and biofilm between procedures, which is why endoscope storage cabinets have moved from "nice to have" to a core piece of infection-prevention equipment for GI labs, ORs, sterile processing departments, and outpatient clinics.
This guide walks through the two main cabinet types, what current standards say, and how to size and spec the right cabinet for your facility.
Conventional vs. drying cabinets: the key decision
There are two broad categories of scope storage:
Conventional ventilated storage cabinets hang scopes securely in a clean, HEPA-filtered or ventilated enclosure. Scopes hang vertically so any remaining moisture can drain, doors lock to control access, and interiors are easy to disinfect. These are the workhorse option for most clinics and lower-volume facilities.
Drying (channel-purge) cabinets go further: they actively push HEPA-filtered air through each endoscope channel as well as around the scope body. Standards bodies have increasingly favored this approach — ANSI/AAMI ST91:2021, the U.S. standard for flexible endoscope processing, points facilities toward drying cabinets that circulate filtered air through channels because drying is considered a critical step in preventing microbial growth. If you run a high-volume GI or bronchoscopy service, a true drying cabinet is the safer long-term buy.
What ST91 and hang-time policies mean for your purchase
How long a reprocessed scope can hang before it needs reprocessing again — the so-called hang time or storage interval — is set by your facility's own risk assessment and infection-prevention policy, informed by ST91 and society guidance (SGNA, AORN). Many facilities using ventilated or drying cabinets adopt policies in the range of 7 days, while scopes stored in unventilated spaces typically get much shorter intervals. The practical takeaway when buying: a cabinet with documented airflow, HEPA filtration, and (ideally) channel drying supports a longer, better-defended hang-time policy — which means fewer unnecessary reprocessing cycles and real money saved.
Sizing your cabinet
Count the scopes you own, then add growth room. Cabinets commonly hold 8, 16, or more scopes. Check:
Interior hanging height — colonoscopes can exceed 66" (168 cm) and must hang without coiling or touching the cabinet floor. Footprint — wall-mount and narrow-profile cabinets suit tight reprocessing rooms; large freestanding units suit central storage. Door count — split or multiple doors limit how much of the interior is exposed each time one scope is retrieved.
Features worth paying for
HEPA-filtered forced air keeps positive pressure and clean airflow inside the cabinet. Channel-purge connections (drying cabinets) dry the scope where it matters most — inside. Keyless or keyed locking restricts access to trained staff and supports your chain-of-custody documentation. Stainless steel or powder-coated steel construction stands up to repeated disinfection; stainless is preferred in sterile processing areas. Clear or windowed doors allow scope identification without opening the cabinet. Tracking provisions — some facilities want space for tags or logs recording reprocessing date and hang deadline for each scope.
Our recommendation
For most clinics and surgery centers, the right choice is a HEPA-filtered, locking scope cabinet sized for your current scope count plus roughly 25% growth — and if you run daily endoscopy volume, step up to a channel-purge drying cabinet so your storage practice matches where ST91 is heading. Harloff scope cabinets in our catalog cover both configurations in wall-mount and freestanding sizes.
Shop all scope & endoscope cabinets, see our related guide to medical storage cabinet types, or contact us for help speccing a cabinet — bulk and facility pricing available.
This guide is for general information. Always follow your facility's infection-prevention policies and the current editions of applicable standards (ANSI/AAMI ST91, SGNA, AORN) when setting storage procedures.
