Sterilization indicator inks are essential in verifying the effectiveness of sterilization processes in medical and industrial settings. The indicators function by changing color after exposure to specific sterilization conditions, providing a clear visual cue that sterilization parameters have been met. This article outlines two types of sterilization indicator inks: steam sterilization and ethylene oxide sterilization inks. Both inks comply with international standards (GB18282.1-2015 / ISO11140-1:2005) and provide reliable performance under precise temperature, humidity, and exposure time conditions. Below, we discuss the color change options for each type, showcasing how these indicators can simplify the sterilization verification process for various applications.
Steam Sterilization Indicator Ink
The ink complies with GB18282.1-2015 / ISO11140-1:2005 and is used for testing and performance requirements of sterilization processes like steam sterilization. After exposure to steam at 121°C for 10 minutes or at 134°C for 2 minutes, a clear signal color will be produced. The color change options are as follows:
| Model | Initial Color | Post-Sterilization Color |
| STEAM-BGB | Blue  |
Gray-Black  |
| STEAM-PGB | Pink  |
Gray-Black |
| STEAM-YGB | Yellow  |
Gray-Black |
| STEAM-CWGB | Off-white  |
Gray-Black |
Ethylene Oxide Sterilization Indicator Ink
The ink complies with GB18282.1-2015 / ISO11140-1:2005 and is used for testing and performance requirements of sterilization processes like ethylene oxide sterilization. Under the conditions of ethylene oxide gas concentration of 600mg/L ± 30mg/L, temperature of 54±1°C, and relative humidity of 60±10%RH, a clear signal color will be produced after 20 minutes ± 15 seconds. The color change options are as follows:
| Model | Initial Color | Post-Sterilization Color |
| EO-PYB | Pink  |
Yellow-Orange  |
| EO-RB | Red  |
Blue  |
| EO-GB | Green  |
Orange  |
| EO-OG | Orange  |
Green  |
| EO-BB | Blue  |
Orange  |
Post time: Sep-07-2024
