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