Instruction manual

1
GENERAL INFORMATION
Introduction
This manual contains instructions for the ROSS
™
Sure-Flow
®
Series
of pH electrodes. Operation and maintenance instructions for the
following electrodes are included:
Orion Description
8003 ROSS Sure-Flow Reference Half-Cell,
glass body
8165 ROSS Sure-Flow Combination, epoxy body
8172 ROSS Sure-Flow Combination, glass body
8175 ROSS Sure-Flow Semi-Micro Combination,
epoxy body
ROSS Sure-Flow Electrodes provide a free-flowing sleeve junction
especially designed for measurement in general pH samples as well
as viscous or colloidal samples whenever best performance is
desired. The junction can be cleaned easily between measurements;
pressing down on the cap allows filling solution to flow through
the junction, carrying away any contamination that may interfere
with measurement.
The Models 8165 and 8175 combine the Sure-Flow junction with a
rugged epoxy body. A sleeve protects the pH sensing bulb and is
removable for easy cleaning. The rugged epoxy body is resistant to
strong acids and strong bases. It may be used intermittently in
some organics. Polar organic compounds should be strictly avoided
(Orion 8172BN is recommended for use in organics).
The Ross series of electrodes provide readings stable to 0.01 pH in
a buffer solution in less than 30 seconds, even in the extreme case
of buffers varying from one another by 50 ˚C or more. Results are
three to five times more precise than those obtained with
conventional electrodes.
ROSS Sure-Flow Electrodes are supplied with BNC connectors.
Adaptors are available for conversion to U.S. Standard connectors.
See Ordering Information, or consult the Thermo Electron
Corporation Laboratory Products Catalog and price list. For more
information contact your local Thermo Distributor, or call Thermo
Customer Service.