Replacing the humidity indicator
The humidity indicator must be replaced when it turns white or does not return to blue after the desiccant has been replaced.
Time needed: Less than 1 minute
Tools needed:
- Gloves, finger cots, or laboratory tissue
- Replacement humidity indicator
| Use only Thermo Scientific certified replacement parts. To order parts, contact us. |
- Remove the old humidity indicator.
Save the old indicator for reference when you install the new indicator.
| Always wear lab gloves or finger cots, or use laboratory tissue, when handling the humidity indicator. Oil or moisture from skin can discolor the indicator. |
When installing the new humidity indicator, make sure the indicator is centered in the holder and that there are no gaps.
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Peel the backing off of the indicator holder, and then, as shown below, press the round, blue indicator onto the adhesive on the holder.
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Place the new indicator and holder over the indicator opening, and press down gently to make sure it is sealed.
