In practice, the water absorption capacity of zeolite adsorbent used in TOR-5 filters is typically in the range of 18-25% of its own mass under oil-drying conditions. This means that 1 kg of fresh zeolite can adsorb roughly 180-250 grams of water before reaching saturation. The exact usable capacity is usually lower than the laboratory maximum, because part of the pore volume is blocked by oil, aging products, and incomplete regeneration. That is why sizing is always based on working capacity, not theoretical capacity, and why trend monitoring of outlet moisture is more reliable than estimating life by time alone.