Extech Instruments Corp.
Waltham, MA 02451 1020
Mar 11, 2009 Utilizing flat surface electrode, ExStik® CL200 monitors Residual Chloramines and Total Chlorine including free chlorine, hypochlorite, and chlorine bound to nitrogenous compounds. Unit provides direct reading of Total Chlorine from 0.01-10.00 ppm, eliminating need to transport sample back to lab for analysis. Meter is suited for measuring chlorine in drinking water, cooling towers, wastewater treatment systems, industrial cooling water, pools, spas, and food processing.

Thermo Fisher Scientific
Waltham, MA 02454
Sep 02, 2008 Featuring refillable epoxy body design, ROSS Ultra Triodes offer precision of 0.01 pH unit, accuracy within 0.03 pH units when using automatic temperature compensation, and fast temperature response within 1°C. Units are compatible with samples containing TRIS, proteins, and sulfides. Available in 4 different models depending on which meter customer has, all electrodes have waterproof BNC connectors for pH measurement.

Thermo Electron Corp.
Waltham, MA 02454
Jan 12, 2007 At less than 3 mm in diameter, ROSS Micro pH Electrode (Model 8220BNWP) can be used with Orion PerpHecT® meters to enable measurement of pH while allowing for direct temperature measurement and compensation without separate ATC probe. Used independently or in conjunction with Orion meters, Micro Automatic Temperature Compensation Probe (Model 928007MD) features SS sensing tip measuring less than 1 mm in diameter, allowing users to obtain temperature of samples as small as 10 µL.

Thermo Electron Corp.
Waltham, MA 0245-11105
Apr 01, 2004 Orion ROSS Ultra screw-cap electrodes are available in standard glass-bulb, flat-surface, semi-micro, and epoxy-bodied styles to best determine pH of variety of sample types. Screw-capped electrodes accommodate applications such as titrations. ROSS Ultra half-cell reference electrode is available for applications where separate sensor and reference electrodes are preferred.

Orion Research, Inc., A Sub. Of Thermedics, Inc., A Thermo Electron Co.
Beverly, MA 01915-6199
Feb 19, 2003 Available in rugged and standard glass bulb, flat-surface, semi-micro, and epoxy-bodied styles, ROSS Ultraâ„¢ pH electrodes use virtually drift-free reference system that is unaffected by temperature or composition. ROSS Ultra half-cell reference electrodes are also available for applications where separate sensor and reference electrodes are preferred.

Mettler-Toledo Process Analytics
Bedford, MA 01730
Oct 23, 2002 With application field including suspensions, solvents, acids, and alkalis, InPro® 4250 electrode offers 0-14 pH range and integral temperature sensor. Its XEROLYT®PLUS reference system consists of solid polymer, which does not require refilling of electrolyte. Pressure resistant for operation pressures up to 232 psig, XEROLYT®PLUS is in direct contact with measuring media using open junction (no diaphragm). Electrode is resistant to sulfide contamination.

Mettler-Toledo Process Analytics
Bedford, MA 01730
Oct 23, 2002 InPro 4800, with gel electrolyte, provides resistance towards oxidizing media, solvents, and acid or alkali solutions, with operating pressures to 188 psi at 266°F. Offerings include pressure-compensated reference system, diffusion path in 2 separated, reference electrolyte chambers, and dirt-repellant, annular PTFE reference junction. Unit also includes integral temperature sensor and watertight VarioPin plug connector.