... acid, cyanogens chloride, arsine, phosgene, chloropicrin, bromomethane, lewisite gas, mustard gas, sarin, vx gas, toxic smoke, and fume, benzene, hydrogen phosphide, chlorine, acetone ... 10mm higher than the horizontal center line, that proves the size is correct. And if it is higher than this, that ... means the size is small, and on the contrary that indicate the ...