Liquid shock, bleach, liquid chlorine?

[JohnT]

What is the difference in the above? When ever I think I have it right I read something here that contradicts my understanding.

Concentration. Bleach is usually 5.25% or 6% sodium hypochlorite. Shock is usually 10% or 12-12.5%.

Same thing with FC, TC, and CC. I use a Taylor kit and the chlorine reading is dark red for the FC and TC which leaves a 0 for CC, (FC-TC=CC) correct?

Thanx

FC+CC=TC