For accurate measurement of M
pH ...the
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RADIOMETER pH Meter Among the complete line of famous Danish RADIOMETER Electro-chemical instruments is the pHM 22. This model is a-c line operated and designed for general laboratory use inclusive of electrometric titrations.
Features Exceptional stability — no zero d r i f t Large m i r r o r scale spreads 14 pH over 1 1 inches Accessory b i o l o g i c a l meter 6-8 p H o n a 6 . 4 " scale Accuracy .01 to .05 p H w i t h r e p r o d u c i b i l i t y d o w n .002 pH 10 M i l l i v o l t ranges Accurate t e m p e r a t u r e compensation W i l l p e r f o r m measurements o n g r o u n d e d media W i l l p e r f o r m Dead Stop End Point titrations Full r a n g e of s t a n d a r d a n d special type electrodes
Applications • Also available MODEL TTTI comprising all the features of pHM22 but designed for automatic titration and batch control. Ask for descriptive literature.
pH d e t e r m i n a t i o n s a n d m i l l i v o l t measurements i n the l a b o r a t o r y • Continuous pH d e t e r m i n a t i o n s or m i l l i v o l t measurements • A c i d / b a s e , redox or other potentiometric titrations • Dead-stop e n d - p o i n t titrations Descriptive literature on request.
SOLD A N D SERVICED I N U.S.A. BY
WELWYN INTERNATIONAL INC. 3355
CLEVELAND
Edged iff Terrace In
11, OHIO
C a n a d a :
RADIOMETER 72 Emdrupvej
Contacf any Branch of Canadian Laboratory Supplies Limited
For further information, circle number 114 A on Readers' Service Card, page 97 A 114 A
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ANALYTICAL CHEMISTRY
COPENHAGEN, DENMARK
