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Rub an Accu-red pipette— you'll feel w h y it lasts longer Accu-red graduations are something new and unique in pipettes. The graduations are right in the glass. As you rub you'll notice a smooth surface. A smooth pipette can take more punishment. Accu-red graduations are as permanent as the glass itself. Prove it to yourself by briskly rubbing them with emery cloth. The surface of the glass will scratch but the graduations are unimpaired. Cleanable? Use any common acid or cleaner, rinse and sterilize. Made of glass No. 7740, these PYREX pipettes will take many trips through the washer. Accurate, too. For example, capacity tolerance of the 1 and 2 ml Accu-red pipettes is ±0.02 ml.
Cost 15% less. Even with their wearproof graduations and accuracy, these pipettes cost you 15% less than previous designs of com parable accuracy. Easy to read. Split sight lines level with major graduations to reduce parallax in readings. Won't contaminate. Glass No. 7740 doesn't in any way alter antigens, or biological or serological solutions. You can get Accu-red pipettes from your laboratory supply dealer in these sizes: Sero logical and Mohr types in 1, 2, 5, and 10 ml and a 25 ml Mohr type. CORNING GLASS WORKS 72-9 Crystal Street, Coming, N.Y. ό&ΌΛί? /KeascJ zejeatae
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PYREX® laboratory ware . . . the tested tool of modern
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For further information, circle number 61 A on Readers' Service Card, page 99 A VOL. 29, NO. 9, SEPTEMBER 1957
· 61 A
