pH buffer standard solution

Calibration solution for pH sensors

  • Available buffers: pH 4.0, pH 7.0 or pH 10.0
  • Accuracy: 0.01 pH units according to NIST (at +20°C / +68°F)
  • Coloured, ready-to-use reagent according to ISO 17025
  • 250 ml and 1 L containers

Related products

Multi-parameter measuring system for water quality monitoring

  • Flexibility in selecting different water parameters: dissolved oxygen, turbidity, conductivity, pH/ORP
  • Installation on compact analytical modules: All measuring points at one location
  • Completely pre-wired and pre-assembled for easy bypass installation

Potentiometric pH sensor for potable, process or treated water applications

  • 2-wire loop powered, 4…20 mA/HART® 7, for direct connection to a PCS
  • Process connection: ¾ NPT (male)
  • 0…14 pH; Max. +80°C / +176°F; 6.9 bar / 100 psi
  • With CPVC sensor body, ceramic diaphragm and Pt1000 for temperature compensation

Potentiometric pH sensor for municipal and industrial wastewater applications

  • 2-wire loop powered, 4…20 mA/HART® 7, for direct connection to a PCS
  • Process connection: ¾ NPT (male)
  • 0…14 pH; Max. +80°C / +176°F; 6.9 bar / 100 psi
  • With PPS sensor body, PTFE diaphragm and Pt1000 for temperature compensation

Potentiometric pH sensor for chemicals and industrial wastewater applications

  • 2-wire loop powered, 4…20 mA/HART® 7, for direct connection to a PCS
  • Process connection: PG13.5
  • 0…14 pH; Max. +130°C / +266°F; 12 bar / 174 psi
  • Glass sensor with open diaphragms and Pt1000 for temperature compensation

Potentiometric pH sensor for water and wastewater applications

  • 2-wire loop powered, 4…20 mA/HART® 7, for direct connection to a PCS
  • Process connection: PG13.5
  • 0…14 pH; Max. +70°C / +158°F; 10 bar / 145 psi
  • Glass sensor with PTFE diaphragm and Pt1000 for temperature compensation

Potentiometric pH sensor for pure water and low conductivity media (>2 μS/cm)

  • 2-wire loop powered, 4…20 mA/HART® 7, for direct connection to a PCS
  • Process connection: PG13.5
  • 0…14 pH; Max. +80°C / +176°F; 12 bar / 174 psi
  • Glass sensor with 3 ceramic diaphragms and Pt1000 for temperature compensation

Potentiometric pH sensor for food, beverage and pharmaceutical applications

  • 2-wire loop powered, 4…20 mA/HART® 7, for direct connection to a PCS
  • Process connection: PG13.5
  • 0…14 pH; Max. +140°C / +284°F (SIP/CIP); 12 bar / 174 psi
  • Autoclavable glass sensor with ceramic diaphragm and Pt1000 for temperature compensation

Potentiometric pH sensor for chemicals, industrial wastewater and low conductivity media (>2 μS/cm)

  • For use with analytical transmitter
  • Process connection: PG13.5
  • 0…14 pH; Max. +130°C / +266°F; 10 bar / 145 psi
  • Glass sensor with 2 open diaphragms and Pt100 for temperature compensation

Potentiometric pH sensor for wastewater, surface and process water applications

  • For use with analytical transmitter
  • Process connection: PG13.5
  • 0…14 pH; Max. +70°C / +158°F; 10 bar / 145 psi
  • Glass sensor with PTFE diaphragm and optional Pt100 for temperature compensation

Potentiometric pH sensor for municipal and industrial wastewater applications

  • For use with analytical transmitter
  • Process connection: ¾ NPT (male)
  • 0…14 pH; Max. +80°C / +176°F; 6.9 bar / 100 psi
  • With CPVC sensor body, PTFE diaphragm and Pt100 for temperature compensation

Potentiometric pH sensor for potable water applications

  • For use with analytical transmitter
  • Process connection: PG13.5
  • 0…14 pH; Max. +70°C / +158°F; 2 bar / 30 psi
  • Glass sensor with ceramic diaphragm and optional Pt100 for temperature compensation

Potentiometric pH sensor for water and wastewater applications

  • For use with analytical transmitter
  • Process connection: ¾ NPT (male)
  • 0…14 pH; Max. +80°C / +176°F; 6.9 bar / 100 psi
  • With CPVC sensor body, ceramic diaphragm and Pt100 for temperature compensation

Potentiometric pH sensor for lower conductivity water applications (>20 μS/cm)

  • For use with analytical transmitter
  • Process connection: PG13.5
  • 0…14 pH; Max. +100°C / +212°F; 1 bar / 14 psi
  • Liquid electrolyte glass sensor with open glass sleeve diaphragm

Potentiometric pH sensor for lower conductivity water applications (>50 μS/cm)

  • For use with analytical transmitter
  • Process connection: PG13.5
  • 0…14 pH; Max. +100°C / +212°F ; 1 bar / 14 psi
  • Liquid electrolyte glass sensor with 3 ceramic diaphragms

KROHNE is a leading system provider in the field of industrial process measurement instrumentation. Employing over 4,000 people worldwide, KROHNE provides complete solutions for flow, level, pressure and temperature measurement, as well as for process analysis. In addition to these measurement devices, KROHNE offers commissioning, calibration and maintenance services.
The name KROHNE stands for innovation, reliability and high-quality products.

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