Planet Waves PW-HPCP-03

PW-HPCP-03 Humidity Control System Refill “restore”

PW-HPCP-03 is a refill pack for the PW-HPK-01 Humidity Control System.

PW-HPCP-03 is used to restore humidity to instruments that are dry and need to be rehydrated to the proper level. It is a one-way system that releases moisture.

PW-HPCP-03 is Step 1 in D’Addario’s Humidity Control System and is designed to raise the humidity of the instrument and case to 45–50% relative humidity. Once the humidity has reached that level, it should be replaced with Step 2.

Step 2 is the PW-HPRP-03 Maintain, a two-way system that both releases and absorbs moisture, maintaining a steady 45–50% relative humidity inside the instrument and case regardless of external conditions. If you start directly with Step 2, the pouches will empty and stop working very quickly. Otherwise, they last 3–6 months.