The Cary 401. Our vibrating reed nit-picker. The Cary 401 vibrat ing r e e d e l e c t r o m e t e r de tects currents on the order of 10"17 a m p e r e , c h a r g e s as small as 5 χ 10"16 coulomb and potentials down to 2 χ 10~5 volts from high imped ance sources. Its list of stand ard features includes solid state circuitry, multiple resistor input switching, re mote input shorting, critical d a m p i n g , measurement of potentials from g r o u n d e d sources, and master-slave o p e r a t i o n . And it c a n be rack or bench mounted. If your application is in mass s p e c t r o m e t r y , radioactivity, physical meas u r e m e n t or b i o m e d i c a l research, the Cary 401 can
lem you've got to solve. For example: MASS SPECTROMETRY
The 401 provides sensitive,
401 is ideal for measuring transistor leak age c u r r e n t s , diode reverse currents and ifeJPBf MOS FET gate stable ion current C ^^*"~ -^< resistances. measurements in a n y ^ ^ e e s S mass spectrometer system BIOMEDICAL RESEARCH w i t h an o p t i o n a l r e m o t e When measuring ion trans ranging modification avail fer, potentials and resistances able for computer-controlled across membranes, the 401 systems. And, in isotope ratio gives u n m a t c h e d perform studies such as uranium 238/ a n c e . O t h e r b i o m e d i c a l 235, a pair of our electrom applications include in-vivo eters can determine ion ratios respiratory analyses of C 1 4 0 2 , with an accuracy of about intermediary metabolism in 0.029; . vestigations, polysaccharide synthesis and degradation RADIOACTIVITY While particularly suited to applications which require drift-free operation, the Cary 401 also measures soft beta radiation such as carbon-14, t r i t i u m and sulfur-35. O r assays radioactive labeled Ran
