Do the two models use the same desiccant?
Yes. The same Dry-Brik works in both the Professional model and the Global model. Alternatively, the Global model can also use a rechargeable metal can desiccant, according to personal preference. Please note, however, that a metal can does not provide the deodorizing function, and due to the amount of moisture being moved to the desiccant during Dry & Store conditioning, a can desiccant will require more frequent re-charging than is common when used with a pouch or jar.
The Dry-Brik II is a superior product based on the physical characteristics of its active ingredients. The Dry-Brik II uses a "molecular sieve," a premium sorbent which contains tiny pores of a precise and uniform size. It acts at a molecular level (hence the name) by allowing small molecules - such as water - to pass through, where they are retained within the pores. A molecular sieve can adsorb water up to 22% of its own weight, and it is especially effective when operating in a warm environment such as a Dry & Store or Zephyr. One of its important features is that once it grabs onto a moisture molecule, it holds it tightly so it's "gone for good."
The canister desiccant's ingredient, silica gel, is an inexpensive, man-made, solid substance with a high surface area but no uniform porosity. Ease of regeneration makes it suitable for users in areas where Dry-Briks are not available or for individuals who choose to not use consumables. Silica gel is most effective at room temperature, and its capacity declines as it is heated. It will not adsorb the same amount of water as molecular sieve, but since it can be easily regenerated in a conventional oven (no microwaves!), this is typically not an issue for most users.
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