The Boveda 2-Way Humidity Control is scientifically engineered to maintain a precise relative humidity in an enclosed space, and available in multiple RH levels.
When do you use a 67 gram Boveda? Whenever it fits in your storage container. Boveda will never humidify beyond the RH on the pack, so there’s no such thing as “too much”. You want to think in terms of using at least the minimum because the more you use, the more efficient Boveda works and the longer they last.
67 gram Boveda are commonly used in mason jars and large bags. They can last 6+ months depending on how often the container is opened, you’ll know it’s time to replace when the entire Boveda begins turning hard.
Simply place the correct number of Boveda inside your container to maintain a precise relative humidity. Each Boveda consists of a specially prepared saturated solution of pure water and natural salt. This saturated solution is contained within a water-vapour-permeable “reverse osmosis” membrane. Within a closed container Boveda maintains a predetermined level of (RH) by releasing or absorbing purified water-vapour, as needed, through the membrane. Boveda provides the cleanest and most purified humidity of all other products available on the market today.
Each packet is overwrapped in high-barrier plastic to ensure maximum shelf-life.