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Instruments, Controllers & Sensors




Portable Turbidity meters

Bench Turbidity meters

Online Turbidity

Flame Photometry

BWB-1 Flame Photometer

Dissolved Oxygen (DO)

Handheld Dissolved Oxygen IP67 Dissolved Oxygen Meters

Bench Dissolved Oxygen Meters

Industrial Dissolved Oxygen 

Dissolved Oxygen Probes

DO Probe Conditioner


Portable pH Testers

Handheld pH Meters

Waterproof pH Meters

Bench pH Meters

Industrial pH Controllers

Replacement pH Electrodes


Free Chlorine

Total Chlorine

Cyanuric Acid

Redox (ORP)

Portable Redox Testers

Handheld Redox Meters

Waterproof ORP Meters

Bench ORP Meters

Industrial ORP Controllers

Replacement Metal ORP Probes

Conductivity (EC)

Portable Conductivity Testers

Handheld Conductivity Meters

Waterproof Conductivity Meters

Bench Conductivity Meters

Industrial Conductivity Meters

Replacement Conductivity Cells

Total Dissolved Solids (TDS)

Portable TDS Testers

Handheld TDS Meters

Waterproof TDS Meters

Bench TDS Meters

Industrial TDS Controllers

Replacement Cells

Ion Concentration

Handheld Ion Meters

Waterproof Ion Meters

Bench Ion Meters

Ion Selective Electrodes (ISE)


Portable Salinity Testers

Handheld Salinity Meters

Bench Salinity Meters

Salinity Sensors

Multi-parameter Bench Meters


Please click above to view this range


Multifunctional Controller


Chlorine Dioxide

Paracetic Acid

Hydrogen Peroxide 



Bench Resistivity Meters

Industrial Resistivity Controller

Resistivity Cells

Electrochemical Sensors

pH, Reference, Conductivity, Redox, Dissolved Oxygen, Ion Selective Electrodes, Calibration Solutions, Hollow Cathode Lamps and

Deuterium Lamps

Portable Waterproof pH testers: Large screen dual line display pH tester offering user-selectable electrodes with BNC connectors - for greater flexibility with choice of electrodes for specific pH applications.

Our New large screen dual line display pHTest10BNC offer user-selectable electrodes with BNC connectors - for greater flexibility with choice of electrodes for specific applications. These feather-weight pH meters have a pH scale of -1.0 - 15 and can be calibrated up to 3 points in pH buffer 4.01, 7.00, 10.01 they are ideal for measuring the pH level of rugged outdoor and wet applications. 

Applications for the pHTest10BNC meter include :

General :  

Ideal for quick and accurate pH checks in pools and spas, aquariums and hydroponics operations, or anywhere frequent pH testing is required. 

Industrial : 

Use for cooling towers, water treatment, water pollution prevention, drinking water purification, monitoring waste water, food processing testing in metal finishing, photo development, printing and chemical industries.

Educational : 

Useful in university, schools, many laboratory applications such as Marine Biology, Agriculture and ecology studies. 

Main Features :

  • Large Display Screen - dual display LCD for enhanced readability, provides comprehensive meter information
  • Waterproof, Dustproof Housing - IP67 rated, maintains the integrity of your tester even in harsh conditions. Plus it floats!
  • User-Selectable Electrodes with BNC connectors - for greater flexibility with choice of electrodes for specific applications
  • Push-Button Calibration with Auto-Buffer Recognition - quick, easy calibration with no calibration mistakes
  • Choice of USA or NIST pH buffer standards with up to 3 points
  • Auto-Power Off saves battery power after non-use
  • Hold Function freezes reading momentarily for easy viewing
  • Self-Diagnostic with message codes for easy troubleshooting


Product Code

pH Range -1.00 to 15.00 pH
Resolution 0.01 pH
Accuracy 0.01 pH
No. of Calibration Points 3 points
pH Buffer Options USA - pH 4.01, 7.00, 10.01; NIST - pH 4.01, 6.86, 9.18 
LCD Display Dual display with battery indicator, error messages/codes
Special Functions Large Screen Display, Self-diagnostic; Hold function; 
Auto-Power Off after 8.5 minutes
Power 4 x 1.4V alkaline button cell batteries; >500 hrs

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We are proud to announce the launch of the Worlds First CFR 21 Compliant - Windows CE Driven Multi-Parameter 6000 Range of Bench Meters. Ideal for use in industries such as Pharmaceutical, Food & Drug Manufacture and Health & Human Services. Please click here for details.

We accept all major credit/debit cards - please contact us for our best possible prices!; any questions? Why not try our Technical Area where you will find an in-depth explanation of many relevant aspects within the field of electrochemistry! more..


Russell Mainstream Supply Ltd.


Cameron House, 8 Crown Square, Kingskettle, Cupar, Fife, KY15 7PW


Phone: +44 (0)1337 831192

Fax: +44 (0)1337 371192


Email: Sales@rmprocesscontrol.co.uk 



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