Ballast means an electronic light source control gear between supply and light source to stabilise the electrical current of a gas-discharge light source;
Pretreatment coating means a coating which contains no more than 12% solids by weight, and at least 0.5% acid by weight, is used to provide surface etching, and is applied directly to metal surfaces to provide corrosion resistance, adhesion, and ease of stripping.
Pretreatment means the reduction of the amount of pollutants, the elimination of pollutants, or the alteration of the nature of pollutant properties in wastewater prior to or in lieu of discharging or otherwise introducing such pollutants into a POTW.
Ash means all species of the genus Fraxinus.
Ballast water means water with its suspended matter taken on board a ship to control trim, list, draught, stability or stresses of the ship.