Propper Twindicator sterilisation control strips are a Class 4 chemical test for monitoring saturated steam sterilisation processes in autoclaves at 121°C and 134°C. They provide full control of the sterilisation parameters: temperature, exposure time, penetration and steam quality. Ideal for aesthetic medicine, dental, beauty and podiatry clinics. They allow convenient and quick oversight of the sterilisation process.
Effective and durable control
The test changes colour from light beige to black, clearly indicating correct exposure to the sterilisation process. The indicator ink ensures a lasting result and stability during archiving.
Easy to match the pack size
Each 20 cm strip has a perforation allowing it to be split into two shorter 10 cm indicators, ideal for smaller packs or sterilisation pouches.
Safety and standards compliance
The product meets the requirements of EN 867-1 (Class 4) and is designed to minimise the risk of operator error. It provides convenient monitoring of autoclave processes at 121°C and 134°C.
Area of use
- dental clinics
- aesthetic medicine clinics
- prosthetics labs
- beauty clinics
- podiatry clinics
Technical specification
- strip length: 20 cm (can be split into 2x10 cm)
- sterilisation temperature: 121°C (exposure time 9.5 min) / 134°C (exposure time 2.5 min)
- test class: IV to EN 867-1
- colour durability: stable for many years, allows archiving










