The present invention relates to carvedilol phosphate salts, which include novel crystalline forms of carvedilol dihydrogen phosphate ethylamino-2-propanol) andor carvedilol hydrogen phosphate, etc. 753 fire testing protocol, for use in oil, gas, exploration, refining and petrochemical applications is provided. A controller can be operable to control activation of the power actuator. Subsequently, a passivation layer is deposited and patterned to form a contact hole. In order to achieve said aim, the position or travel sensor is provided in at least one bending cylinder for the working cylinder for indirect reference measurement of the roll gap via the positively or negatively acting bending cylinders. When the controller stops supplying the control information, the auxiliary controller outputs the control information to the light source in accordance with the relation between the recorded monitor output and the recorded control information.