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ISO 15883 washer-disinfectors: checking a hospital tender against your datasheet

A plain-English overview of the ISO 15883 series for washer-disinfector makers answering hospital tenders: the parts, the A0 value, the tests, and what to check in your datasheet.

By Ademola Afolabi, Founder, New Odyssey Ltd · Last reviewed:

The short answer

ISO 15883 is the series of standards for washer-disinfectors. Part 1 sets general requirements and tests; later parts cover specific loads, such as surgical instruments, bedpans and endoscopes. Hospital tenders use it to fix cleaning, disinfection, tests and records. Check each tender line against your datasheet before you price.

Key Takeaways

  • Read Part 1 together with the part for the load the tender names.
  • Thermal disinfection is usually stated as an A0 value; check which value the tender asks for and for which load.
  • Cleaning efficacy, thermometric, dosing and water quality tests are common tender lines.
  • Chemical disinfection of heat-sensitive endoscopes is a separate part with different checks.

What the ISO 15883 series covers

ISO 15883 sets requirements and tests for washer-disinfectors that clean and disinfect reusable medical devices and related items. Part 1 holds the general requirements, terms and test methods. Each later part adds requirements for one kind of load (ISO).

ISO 15883 parts in outline (own summary)
PartLoad or topic
Part 1General requirements, terms and test methods
Part 2Thermal disinfection of surgical instruments, anaesthetic equipment, bowls, dishes and similar items
Part 3Thermal disinfection of human waste containers, such as bedpans
Part 4Chemical disinfection of heat-sensitive (thermolabile) endoscopes
Part 5Test soils and methods for showing cleaning efficacy
Parts 6 and 7Thermal and chemical disinfection of non-invasive, non-critical items

The A0 value in a tender

ISO 15883 expresses thermal disinfection as an A0 value: the lethality of a time-temperature profile, stated as equivalent seconds at 80 °C. A higher A0 means a more lethal process. Tenders often name the A0 they want for each load, so check that your programme reaches it, at the temperature and hold time your datasheet states.

Typical tender parameters for a washer-disinfector

Common tender lines (own summary)
Tender lineWhat to check in your datasheet
Load type and ISO 15883 partWhich parts your machine is tested to, for which loads
CapacityNumber of DIN trays or load carriers per cycle, and chamber size
Single or double doorPass-through (barrier) design between dirty and clean sides, if asked
DisinfectionA0 value, disinfection temperature and hold time per programme
Cycle timeWhether the tender's cycle time includes drying, and for which load
Chemicals and dosingNumber of dosing pumps, dose monitoring, and which detergents are qualified
WaterFinal-rinse water quality, water consumption and supply connections
Records and traceabilityProcess records, printer or data interface, and batch traceability
Tests and documentsFactory and site tests, and the validation documents to hand over

How to check a hospital tender against your washer-disinfector datasheet

  1. List every requirement in the tender schedule, specification and any national guidance it names.
  2. Match each requirement to the line in your datasheet or standard offer that answers it, with the page.
  3. Mark each one compliant, deviation or clarification, and write why.
  4. Price the extras: load carriers, extra dosing, witnessed tests and validation support.

Write each gap as a row in your technical deviation list, and keep the full list in an engineering compliance matrix. OdysseyGPT drafts both from the tender package and your datasheets, with a quote and page for each row, for an engineer to check. It reads PDF, Word and Excel files, not drawings. See OdysseyGPT for manufacturing.

Frequently asked questions

Which part of ISO 15883 applies to a surgical instrument washer-disinfector?

Part 1 for the general requirements, read with Part 2 for thermal disinfection of surgical instruments and similar items.

What does an A0 value mean in a washer-disinfector tender?

It states how lethal the thermal disinfection stage must be, as equivalent seconds at 80 °C. Check that your programme reaches the A0 the tender names for each load.

References

ISO 15883 series: Washer-disinfectors

ISO

Buy the current editions from ISO or your national standards body.

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