Put one end of indicator printed on the card surface into the middle of the package;According to the general operation, preheat and completely remove air;When the pot temperature reaches 121 ℃, retain more than 20 minutes (the time needed for different items, please according to the relevant provisions), complete extraction, observation of color changes.In the 121 (plus or minus 2) ℃ temperature range, achieve standard black above,
1. This product is not suitable for use inside rotating bottles, tubes, barrels and other instruments.
2. This product shall not be in direct contact with water.It should not be placed directly on the surface of metal or glass which is easy to form condensed water.
3. For used CARDS, the discoloration reagent should not be burned with fire to avoid dust.
4. Do not apply to 132 ℃ pressure steam sterilization effect of detection.
Do not contact with acid or alkali, keep away from moisture and keep in a cool place