Boveda 58% 4g Unwrapped Bulk - 600 Pack

Boveda 4g 58% Unwrapped Bulk Humidity Control Packs, 600 Count 58% RH is the drier of Boveda's two flower levels, and the one to reach for when material is going into a long hold. Each 4 g pack covers a half ounce, moving pure water vapor across a reverse-osmosis membrane in whichever direction the jar needs. Same salt, purified water and thickening agent as the 62%, set to a lower equilibrium. A few points drier gives months on the far end, which is the whole argument for the tier. It is not a better number, just a different one. Material that moves quickly does better at 62%, where more moisture stays in. At 2" x 2" the pack lies flat under an eighth or quarter jar lid. 58% RH Packs for Drier Long Term Storage, 600 to a Case Unwrapped bulk carries the lower per-unit cost. The trade is that every pack goes live the moment the case is opened. That makes it right for a single continuous packaging run and wrong for a case you dip into over six months. Reseal leftovers in an airtight container and they hold. Leave the case open on a bench and they will not. The individually wrapped version solves the same problem from the other direction if your fill happens in batches. Both formats exist at 58% and at 62%, so the packaging choice is independent of the setpoint. There is no indicator card in either, since a Boveda pack is read by feel as it turns granular and then hard. Plan on roughly a three-month replacement cycle. Key Features 58% 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 58% Protects 1/2 oz (14 g) Pack Dimensions 2" x 2" Case Quantity 600 packs Individual Overwrap None — packs activate when the case is 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 MB58-04 Boveda 58% or 62% — Which Should You Use? 58% runs drier and protects longer holds and denser material. 62% keeps more moisture in and suits jars moving to a customer quickly. What Does Unwrapped Bulk Mean in Practice? No individual overwrap, so every pack activates when the case is opened. Best used in one continuous run. How Much Does a 4g Boveda Cover? A half ounce, or 14 g of material. Step up to 8 g for a full ounce or 67 g for a pound. Can Unwrapped Packs Be Stored Part-Used? Yes, but only sealed. Move leftovers into an airtight container or bag, otherwise they discharge into the room instead of your product.