An ink composition including an azo-based colorant and an ink set using the same. The impact indicator includes a first member having a reservoir for holding an indicator fluid; a second member couplable to the first member; and a disc member disposed at least partially between the first and second members and extending over the reservoir. The band extends circumferentially from a first end to a second end and is sized to fit over an outside pipe end. The fan tray may further include a symmetric arrangement of connectors that coincide with the symmetric arrangement of mounting features to allow the fan tray to be connected to a power source of the electronic device any of the more than one orientations. 1 \u03bcm, and the particle diameter of secondary aggregates of the inorganic filler is not more than 2 times the primary particle diameter of the inorganic filler in the heat resistant layer.