- Sodium Calibration Standard 10ppm as Na+, 475mL
- Thermo Scientific Orion® ISE calibration standards for use with ion selective electrodes from ammonia to water hardness
- ISE calibration standards for accurate and reproducible ISE measurements
- ISE calibration standards are used to calibrate ion selective electrodes
- Clear liquid
- Specific gravity: 1.0
- Boiling point: 100°C
- pH: 5.5 to 7.5.