This 1-liter storage unit features biophotonic glass designed to filter out the majority of visible light, which helps reduce the rate of organic decay. While the glass chassis is built to provide high-performance light protection, the overall build quality relies on a polypropylene lid. This material choice provides a lightweight closure, though users should be mindful of seal fatigue over several months of daily use.
The unit measures approximately 1000ml in liquid volume, which translates to a generous capacity for dried botanical goods. It is important to note that the materials are not designed for thermal shock; therefore, avoiding hot-fill or freezing temperatures will help maintain the structural integrity of the glass. The heavy wall thickness provides a sturdy feel on the countertop but does not offer impact resistance against drops.
The glass blocks the visible light spectrum (400nm to 700nm) while remaining permeable to UV-A and far-infrared light to support preservation.
For those who prefer a traditional glass aesthetic with a stainless steel finish, the Kilner Herb Keeper Set provides an alternative 1L wide-mouth glass option.
To discover more ways to maintain the quality of your fresh ingredients, browse our collection of fresh herb reviver jars.
