pH Meters and Dissolved Oxygen Sensors

Pro-Oceanus Systems, Inc. - Manufacturers of an Ultra-Stable line of dissolved oxygen, nitrogen and total dissolved air sensors.
http://www.pro-oceanus.com/

Monokrystaly, Ltd. - Producer of pH electrodes, ion selective electrodes, polarographic electrodes, redox electrodes, pH/mV/ion meters, pH buffers and inner solutions.
http://monokrystaly.com

Analytical Sensors, Inc. - Electrochemical sensors: pH, conductivity, ion selective electrodes, dissolved oxygen, and temperature.
http://www.asi-sensors.com/

Illinois Instruments - A manufacturer of process oxygen analyzers, headspace analyzers, and permeation analyzers.
http://www.illinoisinstruments.com/

Advanced Sensor Technologies, Inc. - Manufacturers of pH, ORP and Ion Selective Sensors for difficult process control measurements. ASTI provides complete pH, ORP and ISE loop control systems including analyzers and transmitters, TPC and PID Controllers.
http://www.astisensor.com/

Advanced Micro Instruments - Manufacturer of trace and percent oxygen analyzers. Full specifications of company products online.
http://www.amio2.com/

PreSens Precision Sensing GmbH - Optical sensors and microsensors for dissolved oxygen, oxygen in dry gases and temperature to measure through glass and non-invasive.
http://www.presens.de/

Insite Instrumentation Group, Inc. - Manufacturing of water and wastewater optical dissolved oxygen and suspended solids systems.
http://www.insiteig.com/

pHionics Inc. - Submersible transmitters for the control and monitoring of various water quality parameters
http://www.phionics.com/

D-Opto - Provides sensors for environmental and scientific research.
http://www.d-opto.com/

YM Instrument Co.,Ltd. - Specialist manufacturer of electro-chemistry instruments. Product range includes pH, conductivity and mini TDS meters, pH combined electrodes, skin electrodes, dissolved oxygen electrodes, conductivity and ORP electrodes.
http://www.chinataizhou.net

CD Hightech Pvt. Ltd - Manufacturers of laboratory equipment - conductivity meter, pH meter, stirrer, pocket conductivity meter and a unique pocket pH meter.
http://www.cdhitec.com/

Shanghai Yong Cheng Scale Co, Ltd. - Manunfacturers and exporters of a range of portable PH meters.
http://www.ycscale.net/product-list-meter.htm

MM Instruments - Offers pH meters and pH testers for laboratory, aquatics and hydroponics testing.
http://www.mminstruments.co.uk

Professional Equipment, Inc. - Offers handheld meters, analyzers and detectors for gas, moisture, electric and temperature. Includes product overviews and photographs.
http://www.professionalequipment.com/

Milwaukee Instruments Inc. - Manufacturer and supplier of water quality meters, pH monitors, laboratory pH meters and other testers, monitors and probes.
http://www.milwaukeetesters.com/

Ionode Pty Ltd - Manufacturer of pH, ORP, ion selective and reference electrodes for laboratory, pool treatment, industrial and custom applications.
http://www.ionode.com.au/en/home.htm

Oxygen analyzers - Describes a product line of trace and percent oxygen analyzers and carbon dioxide analyzers.
http://www.aoi-corp.com/

Rosemount Analytical Uniloc Division - Manufacturer of pH sensors, analyzers, transmitters, and dissolved oxygen sensors.
http://www.rauniloc.com/

All Gas Detectors.com - Provides testing and inspection equipment and offers a large selection of gas detectors.
http://www.allgasdetectors.com/

Panametrics Inc. - Panametrics PCI Division manufactures a complete line of percent and PPM range oxygen analyzers for a wide range of industrial applications.
http://www.panametrics.com/

ElectrodesDirect.com - Supplier of replacement pH, ORP, conductivity, dissolved oxygen, ion selective, and biotechnology electrodes and assemblies.
http://www.electrodesdirect.com/

Quantek Instruments - Oxygen analyzers and CO2 analyzers for modified atmosphere MAP testing of food packages, oxygen analyzer for pharmaceutical vial testing.
http://www.quantekinstruments.com/

JUMO Instrument Company Ltd - A company in the field of analytical instrumentation and probe assemblies for liquid measurement. The range of equipment covers conductivity, clean water, pH, redox (orp), dissolved oxygen, chlorine and hydrogen peroxide.
http://www.jumo.co.uk/

Micro Probe, Inc. - Providing metal microelectrodes for neuroscience research, clinical deep brain procedures, and electrochemical applications. Multi-channel electrode arrays and custom design electrode systems are also available. Located in Potomac, Maryland.
http://www.microprobes.com

Elmetron - Manufacturer of pH simulators, conductivity meters, ion meters, thermometers, humidity meters and thickness gauges. In Polish and English.
http://www.elmetron.com.pl/

Nico2000 Ltd - Ion selective probes, cation as well as anion selective probes and instrumentation. Computer and data acquisition hardware.
http://www.nico2000.net

OxySense.com - Manufactures and supplies oxygen permeation testing and leak detection products optimized for use in research laboratories, production environments and quality control applications.
http://oxysense.com

Radiometer Analytical - Manufacturer of pH and ion meter, potentiometric and Karl Fischer titrator, polarograph for trace analysis, potentiostat and impedance meter. (site traps Netscape)
http://www.radiometer-analytical.com

Endress+Hauser Conducta Inc. - Provides pH, dissolved oxygen, conductivity, turbidity, suspended solids, and chlorine sensors and transmitters.
http://www.wedgewoodanalytical.com/

Scientificinstrumentsindia.com - Indian supplier of a wide range of scientific equipment
http://www.scientificinstrumentsindia.com

Digital Instruments Corporation - Manufacturer of ph meter, conductivity meter, TDS meter, ORP indicator controller and other laboratory analytical instruments from India.
http://www.digitalinstruments.net/

HEITO - Designs, manufactures and distributes standard and specific electrochemical measuring instruments for laboratories.: pH-meters, redox, conductivity, dissolved oxygen, chlorometers, electrodes and probes.
http://www.heito.com/

EID Corp. - Manufacture computerized lab equipment; data loggers, electrodes, cells, probes, sensors, buffers, accessories, pH electrodes, Ion Selective Electrodes, ORP electrodes, Conductivity, DO electrodes and temperature sensors.
http://www.eidusa.com/products.htm

Weiss Research - Manufactures pH electrodes, ISE, ORP electrode, DO, conductivity probes and reference electrode for the laboratory.
http://www.weissresearch.com/

Strathkelvin Instruments - Manufacturers of dissolved oxygen measurement instrumentation for laboratory use.
http://www.strathkelvin.com/

Electro-Chemical Devices, Inc. - Manufacturer of analytical instrumentation for measurement and control of pH, conductivity, dissolved oxygen, resistivity, and specific ions.
http://www.ecdi.com/

Engineered Systems and Designs - Manufactures pH meters and electrodes; dissolved oxygen and gaseous oxygen meters, electrodes and controllers.
http://esdinc.com/

GWJ Company - Products include portable instruments, meters, inline monitors and controllers for testing pH, conductivity, total dissolved solids, oxygen reduction potential, water analysis and deionized water.
http://www.myronlproducts.com

Astech Ireland - Offering TOC, ammonia, sodium, silica, turbidity, BOD, COD, organic halogens, pH, conductivity, flow, and meters.
http://www.astechireland.ie/

IQ Scientific Instruments - Non-glass pH systems with ISFET silicon-chip sensor technology and ion-selective probes.
http://www.phmeters.com/

Sentronic GMBH (GetSens) - Develops chemo- and biosensors basing on fluorescence as well as on thin layer effects.
http://www.getsens.com/

Jenco Instruments - Manufacturer of pH meters, ORP meters, conductivity meters, dissolved oxygen meters, ion meters and temperature meters. ISO certified manufacturer, CE approved products.
http://www.jencoi.com

Milwaukee Meters - pH, EC, TDS, conductivity, redox, thermometers, dissolved oxygen meters.
http://www.milwaukeemeters.com.au/

Amoxtec Inc - Manufacturers of oxygen and gas analyzers, including sensors and monitoring systems for military purposes, bar cellars and pelican cases.
http://www.amoxtec.com/

Eutech Instruments - Catalog of pH meters for the researcher. [PDF]
http://www.eutech.nl/Links/Catalogue/EN%202007%20EIS%20Product%20Catalogue%20pH.pdf

RMS Supply - Supplier of electrochemical sensors, pH electrodes, meters, transmitters and pH measurement, conductivity and ion selective electrodes.
http://www.rmsupply.co.uk

Alpha Omega Instruments - Laboratory and process carbon dioxide analyzers and monitors with measuring ranges from parts per million to high percentage.
http://www.alphaomegainstruments.org/

Hanna Instruments Ltd. - Manufacture and supply pocket testers, portable meters, bench meters and panel meters for a wide range of applications.
http://www.hannainst.co.uk/

Delta Ohm Inc. - Manufactures instruments for the measuring temperature, relative humidity, pressure, light, noise, pH, conductivity and dissolved oxygen.
http://www.deltaohm.com/

Erlich Industrial Development, Corporation - Manufacturer of computerized lab equipment, meters, accessories, data loggers and sensors, including pH, ion selective electrodes, ORP electrodes, conductivity, dissolved oxygen sensors and temperature sensors.
http://www.eidusa.com/