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What is the difference between Boveda B49 and B49HA?

B49HA is a specialty solution for climates with year-round extreme humidity exceeding 60% RH.  Both B49 and B49HA packs maintain a safe, stable humidity between 40 and 60%.

KEY DIFFERENCES:

  • B49 (Standard Formula): Ideal for most geographical climates and standard indoor performance.
  • B49HA (High Absorbency Formula): Absorbs 3x more moisture than Standard B49 packs, making it best for high-humidity coastal or tropical regions.
  • 2-Way Functionality: B49HA still releases moisture to protect your instrument if you travel to a drier climate.

Note: DO NOT use a standard B49 and a B49HA pack simultaneously inside the same instrument case.