The Free Year. \bursf«omCbft^i^ w ^ with our 2-year guarantee on pH meters. Not just one year. Two. So you get a free year. If anything goes wrong with a Corning p H instrument within 24 months of delivery to you, and it's our fault, we'll
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return
the guaraitfee-regfetratfon card when you buy the instrument, and have it serviced only by Corning or authorized Coming Scientific Instrument dealers. We've put the longest guarantee on the longest line. Choose from 12 p H instruments. Analog or digital. Portable to cxpanded-scale research. The free year is yours from the
sarqe people who guarantee pH and reference electrodes for six months. In writing. Call your dealer for a demonstration. Or contact us. Corning Glass Works, Scientific Instruments, Medfield, Mass. 02052.
CORNING SCIENTIFIC I N S T R U M E N T S
For instant response—data or demonstration -call 800-225-3850 toll-free! CIRCLE 3 4 O N READER SERVICE CARD
