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Thermo Scientific™ Orion™ Sodium Electrodes

Measure sodium in aqueous solution quickly, accurately and economically with these sodium electrodes.

Supplier:  Thermo Scientific™ 8611BNWP

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Catalog No. 13-642-245

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Measure sodium in aqueous solutions quickly, accurately and economically with Thermo Scientific™ Orion™ Sodium Electrodes. A unique redox internal system with a Thermo Scientific™ Orion™ ROSS™ electrode provides faster response, and greater stability and accuracy than conventional sodium electrodes.

8611BNWP is a combination electrode with a Sure-Flow™ junction that allows easy cleaning. When conventional electrode junctions clog, the Sure-Flow junction can be opened and flushed clean simply by pressing the cap. 8411BN is a half cell sensor that requires ROSS reference electrode, Cat. No. 800300 or the ROSS Ultra reference electrode, Cat. No. 800500U to function.


  • Sodium BNC electrodes have 1m cables
  • ROSS sodium electrode filling solution: 50mL
  • Sodium ionic strength adjustor (ISA): 475mL
  • Sodium known addition standard: 475mL
  • 1000ppm sodium standard with ISA: 475mL
  • 1000ppm sodium standard: 475mL
  • Sodium reconditioning solution: 475mL
  • Sodium electrode storage solution: 475mL


Waterproof BNC
0.47 in
900010 for regular Na+ (> 10-5 M or 0.2 ppm)
900012 for low level Na+ (< 10-5 M or 0.2 ppm)
4.72 in
120 mm
Glass Body
32 to 176°F
0°C to 100°C
Sodium Combination Ion Selective Electrode
ROSS sodium combination electrode
12 mm
Sure flow
39 in
1 x 10-6 M to saturated 0.02 ppm to saturated
ISE Meters
1 x 10-6 M to saturated 0.02 ppm to saturated
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