Drierite* Absorbents Application: Desiccant; Drierite; Indicating; Size: 5 lb.; Mesh Size: 8; Dries gases to a dryness of 0.005mg/L; Turns pink upon exhaustion Absorb 10 to 14% of their weight in water when drying gases. Turn pink when exhausted. Regenerate to original blue color by heating in oven at 218°C (425°F) for 1 hour. No danger of shrinking or channeling. Stable, constant in volume. Nonpoisonous and noncorrosive.