Quadrum Intercept

The Quadrum Intercept capsules are square capsules manufactured by Leuchtturm, designed for the storage and protection of coins. They stand out for their square format with straight edges, which allows optimised storage in compatible Quadrum trays and binders.

The Intercept technology incorporates an active material based on copper-charged polyethylene, capable of neutralising corrosive gases present in the environment, such as hydrogen sulphide, sulphur dioxide or ozone. This chemical protection mechanism prevents oxidation and tarnishing of coins over the long term, without direct contact between the reagent and the coin.

Quadrum Intercept capsules are available in several internal diameters, expressed in millimetres, to suit different coin sizes for current or collectible coins, whether gold, silver, copper or alloy coins. The central insert is distinguished by its characteristic dark grey tint of the Intercept material, which visually differentiates them from standard Quadrum capsules with a black insert.

The outer shell is made of high-clarity transparent plastic, offering optimal viewing of both sides of the coin without requiring handling. The snap-fit assembly ensures a hermetic seal limiting exchanges with the outside atmosphere.

These capsules are particularly recommended for the preservation of coins sensitive to oxidation, especially silver coins prone to tarnishing, and collectible coins intended for very long-term storage. They are compatible with all storage accessories in the Quadrum range from Leuchtturm.