i still think it is but i am not as sure of it as i once was. please read the instruction manual before performing the update. the "booger sucker" is not my favorite (i kept the one from the hospital which is pretty hard to beat!). it measures 2.75 inches across and rises up over 1.2 inches tall. i love love love it when someone completely understands the message of my work. i almost forgot to write on my web log! 