Regenerating the desiccant

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When the desiccant canisters must be replaced, you can contact us to order new desiccant canisters, or you can dry and reuse the saturated canisters according to the following instructions.

Time needed: 3 hours

Tools needed:

Vented oven
Insulated cloth or hot pad

If you need to replace the humidity indicator, you must order new desiccant canisters. A new humidity indicator is included with the new desiccant canisters.


If you are going to dry and reuse saturated desiccant canisters, make sure you have fresh desiccant canisters that you can place in the instrument while the saturated canisters dry. Do not leave canisters in the oven for more than three hours and do not exceed a temperature of 150 °C (about 300 °F). Make sure the insulated cloth or hot pad you use to handle the regenerated desiccant canisters is not contaminated with substances that could be absorbed by the desiccant and subsequently released into your instrument.

If you are going to dry and reuse saturated desiccant canisters, make sure you have fresh desiccant canisters that you can place in the instrument while the saturated canisters dry.
Do not leave canisters in the oven for more than three hours and do not exceed a temperature of 150 °C (about 300 °F).
Make sure the insulated cloth or hot pad you use to handle the regenerated desiccant canisters is not contaminated with substances that could be absorbed by the desiccant and subsequently released into your instrument.

Place the saturated desiccant canisters in a vented oven at 150 °C (about 300 °F) for three hours.


	Avoid hazard. Use an insulated cloth or hot pad to handle the heated desiccant canisters and always wait until the canisters have cooled to room temperature before you reinstall them in the instrument.

Use an insulated cloth or hot pad to remove the desiccant canisters from the oven.

Allow the canisters to cool on the hot pad or cloth. Do not attempt to handle or install them until they have reached room temperature.

When the canisters reach room temperature, you must either install them in the instrument or seal them in an airtight container or bag. Otherwise, they will absorb moisture from the air in the room and quickly become saturated again.

The desiccant material within the canister is molecular sieve 4A. When new, this material can absorb water up to 20% of its mass. The regeneration temperature and time specifies here is limited due to the packing materials, which results in a lower absorption capacity than a new desiccant canister.