THE OLIN MERCURY M O N I T O R FOR LIQUIDS Continuous and automatic measurement of mercury
Maximize your mini.
concentrations in waterand aqueous systemsevery 6 minutes.
The Mercury M o n i t o r can analyze, detect, measure and record traces of mercury (in any of its forms) ranging f r o m zero to 5 p p m . A n d it does it all instantly. A u t o matically. A r o u n d the clock. W e developed it for use in our o w n plants. Where w e don't want the p r o b l e m of momentary discharges of mercury. The M o n i t o r operates w i t h ex tremely high accuracy. It is so efficient, in fact, that it can't be fooled by organic compounds and sulfides that might be present in the sample. The M o n i t o r is ruggedly construct ed, designed for easy maintenance and requires no personnel to operate. W e perfected it to help us. It works great. Take it f r o m us. For more i n f o r m a t i o n , w r i t e : Analytical Instruments, O l i n Corp., 120 Long Ridge Road, Stamford, Conn. 06904. Or call : 203-356-3530.
Heath/Schlumberger's new Com puter Interface brings the inside of your PDP-8 out side to the real world
The new EU 801Ε Mini-Computer Interface allows owners of any PDP-8 family computer (with positive I/O bus) to take full advantage of their mini's capabilities...by allowing direct input of measurement data and output of processed data and control information. The 801E is ideal for interfacing a variety of digital instruments...designing complex dedi cated interfaces...or just learning about interfacing. All connection points necessary for a functioning interface are readily available outside the computer: all signals required for any given data transfer operation are legibly and logically presented on the top of a plug-in card in the 801E ADD unit. Connection points on the card top include 12-bit digital inputs and outputs (Accumulator In, Accumulator Out and Buffered Mem ory Bus), three control lines, five timing lines and two status lines. And because the 801E is a patch system using positive-contact connectors and ordinary hook-up wire, there is no soldering. Simple data transfer circuits can be patched and tested in a few minutes. Signal modifica tion and device control circuits can be quickly developed and refined. For detailed information on the new Heath/Schlumberger EU-801E MiniComputer Interface, send coupon below for free brochure...and learn how you can turn your PDP-8 into a maxi-mini. EU-801Ε System, 42 lbs
$1250.00*
EU-801E Interface with buffer
It has to work for us before we let it work for you. on η ' A N A L Y I I CAL INS I'RUMENTS.
CIRCLE 151 O N READER SERVICE CARD
NEW +204°C ELECTRIC OVEN HAS NO HEATING ELEMENTS (YOU CAN'T BUY A SAFER ONE)
HEATH
m.mi"'-^Mi
Heath/Schlumberger Scientific Instruments Department 511-014. Benton Harbor, Michigan 49022 I'm convinced and t need a maxi-mini now. Enclosed is $ plus shipping for EU-801E(s). I'm interested but not convinced. Please send EU-801E brochure. Please send 1972 Instrumentation Catalog.
No heating elements . . . no electrical controls . . . 1 0 0 % proportional performance. Air movement generates heat . . . with no hot spots, no cold ones. N o point in this oven can exceed the in dicated air temperature. Temperature rises simulta neously in all portions of the chamber. Heated envi ronment inside the work chamber unaffected by external conditions. Ideal for hazardous applications, life-testing and other exacting work.
If you need a safe oven, send for this brochure. Write: Blue M Engineering Company, A Division of Blue M Electric Company; Corporate Headquarters: Blue Is land, Illinois 60406.
Name
Title Company/Institution Address
*ty
State
•S\
Zip
•Mail Order price; F.O.B. Benton Harbor, Michigan
EK-329
CIRCLE 1 0 2 O N READER SERVICE CARD 86 A
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ANALYTICAL CHEMISTRY,
VOL. 4 4 , N O . 7, J U N E 1 9 7 2
BLUE M CIRCLE 2 8 O N READER SERVICE CARD
SEND FOR FRICTION INFORMATION-Paten
