The model FD-130 is our smallest foam dewar. In the photo to the left, it is the smaller of the two vessels shown. The price is $50. The cylindrical cavity in this vessel is 2 inches in diameter by 3.5 inches deep, so that it easily holds 130 ml and a maximum volume of 175 ml of liquid nitrogen. Perfect for dermatology and other applications that require a small quantity of cryogenic liquid.