Supplying the Nation's Laboratories from Coast to Coast HARSHAW SCIENTIFIC
S p o t l i g h t s pH M e t e r s Including two NEW Beckman meters. The "Zeromatic" line operated "push button" pH meter and the "Pocket" pH meter. The Zeromatic provides Easier, Faster, Routine p H measurements; greater versa tility, accuracy, reproducibility. The pocket model which is only 6 " χ 3 " χ 2 " and utilizes a combination glass and reference electrode offers the maximum in portability and convenience. Space permits only a brief description. W e welcome your requests f o r more detailed information. _ ^ %
H-29604 H-29604—Beckman Pocket pH meter, battery operated 6" χ 3" χ 2" deep. Light weight with unique combination glass a n d reference electrode which permits holding meter in one hand while taking readings, leaving the other hand free for recording $95.00
H-2S915 H-28915—Beckman Zeromatic pH meter, line v operated. Simply push button and take pH or millivolt reading. Drift free, no warm-up time, line voltage compensation, continuous 0-14 p H scale. Outlets provided for recorder, polariz ing current, etc $275.00
H-29601 — Beckman Model N-1 p H meter, battery o p e r a t e d . Range 0-14 pH. Tempera ture compensator covers 0 - 1 0 0 ° C . R a p i d measurements to 0.1 p H a n d with careful technique to 0.03 pH $290.00
H-2890I
H - 2 8 9 0 1 — Beckman M o d e l G S p H meter, battery operated. For special p H problems and applications requiring extreme precision. This ultra-sensitive instrument is accurate to 0 . 0 0 2 5 pH. The meter is a modified model G , which provides 2 0 times the sensitivity of standard null-meter measuring circuits. Utilizes same electrodes as model G . . $ 5 9 5 . 0 0
H-29601
H-28900 —Beckman M o d e l G p H meter, battery operated. Designed for highest pre cision and versatility in pH studies, oxidationreduction p o t e n t i a l measurements a n d titrations with accuracy a n d reproducibility to ± 0 . 0 2 p H $445.00
H-28900
H-29602—BeckmanModelN-2pH. meter. Acompact, battery operated meter in carrying case designed especially for portability. Ideal for field use. Range 0-14 p H . Case has compartment for electrodes, beak er and solutions . . · $ 3 3 5 . 0 0
Service facilities and complete electrode stocks are maintained at all Harshaw Scientific Branches
HARSHAW
SCIENTIFIC
Division of the Warshaw Chemical Co. · Cleveland 6, Ohio Sales Branches and Warehouses Cleveland 6, Ohio, 1945 East 97th St. Houston 11. Texas, 6622 Supply Row Cincinnati 13, Ohio. 6265 Wiehe Road Los Angeles 22. Calif., 3237 S. Gar6eld Ave. Detroit 28, Mich., 9240 Hubbell Are. Philadelphia 48, Pa.. Jackson k Swanson Sts. Sales Offices: Baton Rouge, La. · Buffalo 2, N.V. · Pittsburgh 22, Pa. · Oakland 11, Calif. For further information, circle "3rd Cover" on Readers' Service Card, page 77 A
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