Brand: D'Addario
Series: Guitar Humidifiers
Model: Humidipack Restore System [PW-HPK-03], 3-Pack Refill [PW-HPCP-03]
D'Addario Humidipak Restore System - Patented Two-Way Technology for Dry Guitar Rehydration
This automatic climate control system utilizes safe, non-leaking gel packets inside protective fabric sleeves to safely restore essential moisture to dangerously dry instruments and cases, preventing cracking.
Key Features of Humiditypak Absorb System:
Step 1B (Restore): Use the Humidipak Restore first if your instrument case reads consistently 40% or lower RH to pull the moisture up safely.
Patented Membrane Barrier (The Wrapper): Covered under Boveda's primary patent (US Patent 5,936,178), this specialized vapor-permeable material is legally unique because it blocks liquid water and salts from leaking out while acting as a precise gatekeeper for water vapor [US5936178A].
Patented Viscosity Control (The Gel Formula): Covered under Boveda's chemical formulation patents (such as US Patent 6,921,026), this proprietary blend keeps the natural salt-water solution suspended in a thickened, non-sloshing gel matrix that maintains a perfectly consistent moisture exchange rate.
- Equilibrium control: This feature uses a high-output salt concentration that rapidly drives moisture into dry wood, then automatically ceases release once the environment safely hits the ideal 45–50% baseline.
- Leak-Proof Lining: The inner polymeric film completely blocks liquid, salt, and gel from escaping.
Step 2 (Maintain): Once the heavy absorption process brings the environment down to the ideal 45–50% level, you pull the Absorb packs out and switch to standard Humidipak Maintain packs for day-to-day, long-term stabilization.
- Why Removal of Restore: The Restore packet operates as a high-capacity re-hydrator that must be replaced by the Maintain packet once the ideal baseline is reached, as only the Maintain packet possesses the balanced salt-to-water ratio required to safely absorb unexpected humidity spikes and provide long-term, two-way environmental regulation.
Check the product links below: