Chemical Indicator Type 4

Mediwish Steam Chemical Indicators: Monitoring and Type 4-S Option

Steam chemical indicator strips provide a visible process response. Select the intended strip variant, use its supplied interpretation reference and record the result with the cycle information.

What are Type 4 SCIs?

These chemical indicators provide a visible response during the selected steam process. For the Type 4-S dual-strip option:

• Temperature: The supplied label states 121 °C for 15 minutes or 134 °C for 3.5 minutes.
• Time: Use the test conditions labelled for the selected strip variant.
• Result Location: The response must be interpreted at the strip location; it does not establish conditions in every part of the load.

Chemical indicator results are one part of the monitoring evidence. Read the visible process response alongside the cycle data and other monitoring results.

Benefits of Type 4 Indicators:

• Visible reading: Compare the processed strip with the supplied reference at the specified readout time.
• Product selection: Choose the named strip variant for the intended steam process.
• User-friendly: Interpret results according to the product instructions and facility procedures.
• High visibility: Record the visible indicator appearance after processing.
• Traceability: Link the response to the cycle and load identification.

Selecting the Right Type 4 Indicator:

Consider these factors when choosing a Type 4 SCI:

• Temperature Requirements: Match the selected strip to its labelled test conditions.
• Cycle Type: Use the cycle specified for the selected strip and test system.
• Packaging Compatibility: Ensure compatibility with your packaging materials.
• Ease of Use: Consider factors like size, placement needs, and visibility for optimal workflow.

Type 4-S Steam Dual-Strip Option:

• Labelled conditions: 121 °C for 15 minutes or 134 °C for 3.5 minutes.
• Colour reference: Yellow indicator area changing to black, with a printed black contrast colour.
• Strip format: A dual indicator strip with a marked dividing line.

Best Practices for Using Type 4 Indicators:

• Placement: Follow manufacturer instructions for optimal placement within the chamber.
• Recording and Documentation: Record essential details like date, cycle type, and indicator results for traceability.
• Storage and Handling: Store indicators in a cool, dry environment following manufacturer recommendations.
• Training: Train personnel on proper usage to ensure accurate monitoring.

Resolving Type 4 Indicator Issues:

• Partial or Uneven Color Change: Investigate potential issues like inadequate exposure or improper placement. Refer to the manufacturer's specifications for acceptable color change tolerances.
• Failed Indicators: Record the indicator result and follow the facility's investigation and load-review procedure; do not treat the strip response alone as a release decision.

A Complete Monitoring Record:

Keep the following information linked to the processed load:

• Product identification: The selected indicator variant and batch information.
• Cycle information: The selected steam cycle and its recorded data.
• Indicator result: The observed strip response, read against the supplied reference.

Order the Type 4-S dual-strip option by specifying the named steam variant and required quantity.

Resources:

• Association for Professionals in Infection Control and Epidemiology (APIC) ( https://apic.org/)
• ASSP ( https://www.assp.org/about)
• Centers for Disease Control and Prevention (CDC) ( https://www.cdc.gov/)
• Food and Drug Administration (FDA) ( https://www.fda.gov/)

Order Mediwish steam chemical indicator strips for your routine monitoring supplies; specify Type 4-S when selecting the dual-strip option described above.

Result review: A chemical response alone does not establish whole-load sterility or replace required biological monitoring, specified tests or release review.

Records: Read and retain the selected indicator result with the load and cycle information under the facility monitoring procedure.