A torque bias coil spring for a camshaft phaser disposed in an annular well formed in the phaser rotor and having a central arbor for supporting the spring. The combination of two components which differ in shape allows the spring to maintain its shape and spring constant. The present invention is further directed to fiber-containing fabrics and webs comprising triggerable, water-dispersible binder compositions and their applicability in water-dispersible personal care products, such as wet wipes. Samples and analyses can, thus, be obtained as a function of position on the wafer. By the apparatus, quantity of generated heat and heat generating time can be easily controlled.