MVI Steam 2551 Type 4 Chemical Indicator 121°C/134°C 480pcs

Type 4 multi-variable chemical indicator for monitoring steam sterilization cycles at 121°C and 134°C. Paper strip format divides in half lengthwise, with indicator line that changes to black when exposed to proper sterilization parameters (3 minutes at 134°C or 8 minutes at 121°C). Designed for placement inside sterilization pouches with instruments to verify exposure to critical parameters of effective steam sterilization. Package contains 480 pieces (2x240 strips).