PRIMA Class 5 Chemical Indicator Single Strip for Steam Sterilization, 70×20 mm, 250 pcs

The PRIMA Class 5 single-strip chemical indicator is designed for monitoring steam sterilization processes in autoclaves, in full compliance with the ISO 11140-1 standard. This indicator provides a reliable visual confirmation that the load has been exposed to the required sterilization parameters of temperature, time, and steam penetration. Each indicator strip measures 70 × 20 mm and is made of laminated cardboard, ensuring dimensional stability and resistance to heat and moisture during the sterilization cycle. The printed area contains a temperature-sensitive reactive ink that gradually changes colour as the sterilization parameters are achieved. Colour change sequence: • At 135°C for 3.5 minutes, the colour changes from blue to light grey, indicating insufficient exposure. • At 135°C for 7 minutes or 121°C for 20 minutes, the colour of the “CORRECT” indicator turns black, and the “EXTENDED” indicator turns dark grey. • At 135°C for 10 minutes, all three indicators change completely to black, confirming that the sterilization cycle has reached its full parameters. The strip includes three printed indicators: 1. PROCESS. 2. CORRECT. 3. EXTENDED. These visual references allow easy interpretation of the sterilization result without additional testing. The ink composition and reaction thresholds are engineered to respond to typical autoclave cycles of 135°C for 7 minutes or 121°C for 20 minutes, which are the most common cycles used in medical, dental, and laboratory sterilizers. The indicator is non-adhesive, designed to be freely placed inside each sterilization pouch, paper, or plastic bag. When sterilizing in opaque packaging, it is recommended to use an additional external integrator for immediate verification after the cycle completion. Technical details: • Dimensions: 70 mm × 20 mm. • Composition: laminated cardboard. • Colour sequence: blue → light grey → dark grey → black. • Operating temperature: 121°C – 134°C. • Standard compliance: ISO 11140-1, Class 5. • Packaging: 250 pieces per box. Instructions for use: Place one indicator inside each sterilization package before starting the cycle. After the sterilization process, check the colour change to confirm that the required conditions were achieved. The indicators are single-use and should be disposed of after visual inspection. The PRIMA Class 5 single-strip chemical indicator provides consistent and accurate monitoring of steam sterilization cycles. Its precise colour transition, durable laminated structure, and compatibility with standard autoclaves make it a dependable component for controlled and validated sterilization procedures.