MEDIWISH CEI Cleaning Efficacy Indicator (CVC-50)

The 30 × 6 × 0.65 mm strip is retained between the coils of the internal spring in the reusable 12-5814 box holder. The strip, holder and position form the test configuration; changing the holder or positioning can alter access of the cleaning fluid to the soil. Select the configuration according to the current model-specific instructions and the facility’s established procedure.

Each strip is individually sealed in an aluminium pouch. One retail outer pouch contains 50 sealed strips. Check the REF, lot, expiry and package condition before use. Handle the clean edge and avoid rubbing, wetting or contaminating the test-soil area before processing. Discard the used strip after reading and recording the result; clean, dry and inspect the reusable holder before reuse.

CEI provides a visual observation of removal of the test soil on its own steel carrier in the selected configuration. It is not a direct measurement of residual protein on instruments, a thermal-disinfection indicator or a sterility test. Use the acceptance criteria and permitted processes in the current CEI instructions; do not apply another indicator’s reading rules or cycle settings to CVC-50.

For other monitoring questions, use the cleaning validation and monitoring selector. A separate cavitation check, such as MZS-5635 indicator vials, has its own endpoint and procedure; it does not replace the CEI soil-removal observation. The comparison of ultrasonic test methods explains these different limits.