PHOTOVOLT CORP

A full-fledged line-operated. pH Meter of remarkable accuracy at the UNPRECEDENTED price of. $11 roo. 115 . . . made possible by recent advances in ...
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PHOTOVOLT pH METER MOD. 115

A full-fledged line-operated pH Meter of remarkable accuracy at the UNPRECEDENTED price of $

115

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• · · m a d e possible b y recent advances in electronic tubes and circuits. Write for Bulletin #225 to

PHOTOVOLT CORPORATION 95 MADISON AVENUE

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N E W YORK 1 6 , Ν . Υ.

For further information, circle number 32 A-1 on Readers' Service Card, page 39 A

PHOTOVOLT

Densitometer

for Partition Chromatography and Paper Electrophoresis

A photoelectric precision instrument for the rapid and convenient evaluation of strips and sheets of filter paper in partition chromatography and paper electrophoresis. Write for Bulletin

* 8 0 0 to

PHOTOVOLT CORP. 95 Madison Avenue Also Colorimeters Fluorimeters Nephelometers

New York 16, Ν. Υ.

| Electronic Photometers pH meters Multiplier Photometers Reflection Meters Interference Filters Glossmeters

Circle No. 32 A 2 on Readers' Service Card, page 39 A

32 A

SIMPLE in operation and maintenance. FAST and dependable in daily service. FULLY stabilized for wide r a n g e of line v o l t a g e fluctuations.

P H O T O V O L T Line-Operated Multiplier FLUORESCENCE METER M