ORP electrode , platinum , polypropylene , Diaphragm: ceramic , simply , gel , PG 13.5 screw
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Submersion EC Probe, Four-ring and Platinum Sensors.
Blackstone BL983329-1 TDS (total dissolved solids) mini controller, 0 to 999 mg / L, 115/230V. Water treatment, heating and air conditioning systems, cooling towers, surface technology, light industrial processes
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Spare ORP Electrode for HI 981406 and HI 982401 ORP Indicators.
Blackstone BL983322-1 Mini Conductivity Controller, 0 to 19.99 uS / cm, 115/230 V Water treatment, heating and air conditioning systems, cooling towers, surface technology, Simple industrial processes
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Flat Tip Industrial pH Electrodes.
This product has multiple variants. The options may be chosen on the product page
Blackstone BL931700-1 Mini pH Controller, dosage of acid or base, 4-20 mA recorder output, 115/230 V Water treatment, sewage treatment, neutralization and decontamination, surface treatment, simple industrial processes
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Blackstone BL981411-1 Mini pH Controller, dosage of acid or base, Resolution 0.1pH, 115/230V
081-855-1842
02-541-4199
HI723 Checker HC ® - Chromium VI, HR 
เครื่องวัดปริมาณแอมโมเนีย ช่วงสูง รุ่น HI733 
HI2001 - ORP Electrode Process 
