I might add that some people use a medical syringe which is intended to deliver such things as cough syrup. One is illustrated in the Covington site. However, a recent post indicated that these may not be very accurate. A better choice would be to buy a 25 - 30 ml graduate (1 ounce). Either the syringe or the graduate is made to hold the marked amount so it is important to rinse it and add the rinsings to the dilute developer.