Explanatory notes
… or solid materials (e.g., sand, powders, granules, grit or metallic abrasives) in the form of a jet, a dispersion … stone, composites, rubber, glass, metal). These machines typically operate under pressures of 3,000 to 4,000 bars … WHETHER OR NOT CHARGED This group covers extinguishers, filled or not, of the kind which use foam‑producing or other …