A :B :C :D :E :F :G :H :I :J :K :L :M :N :O :P :Q :R :S :T :U :V :W :X :Y :Z :


As relates to ion exchange, the loss of capacity, reduction of resin particle size, excessive swelling of resin particles, or any combination of these factors resulting in a lessening of the ion exchange capabilities of the resin. This may occur as a result of the type of service for which the resin was used, the solution concentrations used, heat, or aggressive operating conditions.