The D'Addario Planet Waves Two-Way Humidification System Replacement Packets (3-Pack PW-HPRP-03), custom-made for D'Addario by Boveda, are what gives the Planet Waves humidification system its automatic two-way humidity control capability. Containing a food-grade gelled solution of water, salt and gum, these leak-proof Boveda packets (formerly Humidipaks) automatically maintain a constant 45%–50% relative humidity (RH) level within your instrument’s case.
The Boveda replacement packets:
The PW-HPRP-03 replacement packets install easily in the pouches that come with the Planet Waves Two-Way Humidification System kit — use 1 packet with the headstock pouch and 2 packets with the soundhole pouch. The packets work best inside tight hardshell instrument cases, and last 2-6 months, depending on the humidity levels they have to deal with. It’s time to replace the Boveda packets when they become firm.
Money-saving replacement packet 12-pack PW-HPRP-12 is also available.
The D'Addario Planet Waves Two-Way Humidification System is an excellent solution to maintain proper humidification levels inside your instrument’s hardshell case. If your guitar has been exposed to dry conditions without proper humidification, we recommend you “prime” it first with D'Addario Planet Waves Two-Way Humidification System Conditioning Packets PW-HPCP-03.