Metallizing equipment co. Pvt. Ltd. An iso 9001:2000 certified company offers acoustic chamber. The acoustic chamber is used in handling to minimize the danger of the dust explosion resulting from hvof spraying. All types of dust having considerable calorific value can be explosive. This dust includes flour, starch, hard rubber dust, wool flour, aluminum dust and the dust of other metals. Aluminum and magnesium dusts are particularly hazardous. The dust must be wetted down and remain immersed in water.