<prompt> Balanced stone is dental stone:Which undergoes rapid expansionIn which, accelerators or retarders have been added according to needIn which, amount of water of hydration is controlledIn which, the crystals are all of uniform size  <response>: A stone with a setting time established by the addition of proper quantities of both accelerator and retarder is called balanced stone. Typical accelerators are potassium sulfate and potassium sodium tartrate Rochelle Salts.Typical retarders are sodium citrate and sodium tetraborate decahydrate Borax.Manappalil pg-313 