Boveda 62% 4g Individually Wrapped Bulk - 600 Pack

Boveda 4g 62% Individually Wrapped Humidity Control Packs, 600 Count Each 4 g pack holds a half ounce at 62% RH, adding or pulling moisture as a sealed jar drifts. Weight retention runs 15% higher than material stored without it, which is where the packaging economics land. At 2" x 2" it sits flat under an eighth or quarter jar lid without eating usable volume. The fill is food-grade salt, purified water and a thickening agent behind a reverse-osmosis membrane. Only pure water vapor crosses, so nothing transfers to what the pack touches. Sizing runs off weight of contents rather than jar volume, and 4 g is matched to 14 g. On a smaller load it simply lasts longer between swaps. 600 Count Bulk Humidity Packs Built for a Packaging Line Individual wrapping is the whole point of this SKU, because every pack stays sealed and inert until the moment it is torn open at fill. That means a 600 count case can sit half-used for months without the remaining packs quietly discharging into the box. The unwrapped version costs less per unit but starts working the moment the case opens. It suits a single continuous run. Pick wrapped when fill happens in batches, unwrapped when it happens all at once. The same choice exists at 58% RH in both formats, so the setpoint does not force the packaging. What the wrapper does not give you is a spent indicator, since Boveda packs are read by feel as they turn granular and then hard. Replacement runs on roughly a three-month cycle. That holds for retail jars and for long term storage alike. Key Features 62% Two-Way Control: Adds moisture to a container that has dried out and pulls it back when the lid comes off. Protects 1/2 oz (14 g): Sized so the pack has capacity in hand rather than running at its limit. Pure Water Vapor Only: A reverse-osmosis membrane means nothing but water crosses into your material. Food-Grade Fill: Salt, purified water and a food-grade thickener, safe resting directly against contents. No Activation Required: Active on arrival, so there is no soaking, charging or maintenance step. 2" x 2" Footprint: Seats in a lid pak holder without taking volume that would otherwise hold product. Tactile Replacement Signal: The pack turns granular then solid when spent, so no indicator card is needed. 2 Year Shelf Life: Sealed stock keeps, so holding stock ahead does not mean losing packs to age. Technical Specifications Specification Value Pack Size 4 g Relative Humidity 62% Protects 1/2 oz (14 g) Pack Dimensions 2" x 2" Case Quantity 600 packs Individual Overwrap Yes — each pack sealed until opened Technology Patented 2-way humidity control (adds and removes moisture) Composition Food-grade salt, purified water and a food-grade thickening agent Membrane Reverse-osmosis membrane — releases pure water vapor only RH Accuracy ±2% of labeled RH in an airtight container Direct Contact Safe against stored material; will not damage contents Shelf Life 2 years unopened In-Use Life 2–4 months; replace on a ~3 month cycle End-of-Life Indicator Pack turns granular, then solid, when spent Activation None — active on arrival, no soaking or charging Equilibration Time 24–48 hours to reach target RH in a sealed container Storage When Not In Use Keep in a sealed bag or airtight container Manufacturer Boveda Inc. SKU MB62-04-OWB Individually Wrapped or Unwrapped Bulk? Wrapped packs stay dormant until opened, so a part-used case keeps working months later. Unwrapped cases start discharging as soon as they are opened. How Much Does a 4g Boveda Pack Hold? A half ounce, or 14 g. The 8 g size covers a full ounce and the 67 g covers a pound. How Long Do Boveda 4g Packs Last Once In Use? Two to four months in a sealed jar, on a roughly three-month replacement cycle. Unopened and wrapped, shelf life runs two years. Do Boveda Packs Need Activating? No. They arrive active, with no soaking or charging. Drop one in a sealed container and it reaches target RH within 24 to 48 hours.