for Ultra
performance
The surgeon u s e s many instruments Each of these instruments is a precise extension of the creative surgeon's hands . . . all are essential to his proficiency. Today, the spectroscopist is challenged by the sophistication of the art to achieve new creative analytical techniques. That's why United offers you a graduated range of physical grades . . . from low to high densities. There is no need to compromise imaginative ability nor professional standards by limiting your choice of electrode grades. As many new instruments are being developed for surgeons, so United is continually striving to provide you with the exact electrode to meet each different need. Why not write today for full details and samples from our wide selection of custom and stock electrodes?
U NITED
carbon products co. Circle No. 83 on Readers' Service Card
26 A
·
ANALYTICAL CHEMISTRY
P. O. B O X 7 4 7 - A BAY C I T Y , M I C H I G A N