Hygrometer
After drying the filament, it should be stored in a sealed box or an AMS with desiccant to prevent moisture absorption during use.During this time, it is advisable to monitor the actual humidity level using a hygrometer. The relative humidity in indoor open-air typically ranges from 45% to 65% RH, with higher levels in humid weather. Most filaments require humidity levels below 20% RH to keep them dry for an extended period, and the lower the humidity, the longer the filament can stay dry.
In a dry environment with 20% RH, filaments with varying water absorption capacities can remain dry for approximately 2 to 7 days. However, in a typical indoor environment with around 55% RH, freshly dried filaments with different water absorption capacities can start to absorb moisture and experience reduced print quality within approximately 2 to 12 hours.
Sillica Gels
Silica gel is a granular, porous material that absorbs moisture from the air. It is less absorbent than activated alumina, so it needs to be reactivated/replaced more frequently. Additionally, some silica gels may contain cobalt chloride, a toxic substance that can be harmful if ingested or inhaled.
Blue Desiccant
Green Desiccant
