Buffers and Standards
Buffers and Standards
Hydrogen ion buffers comprising a mixture of a weak acid and its conjugate base or vice-versa and used to stabilize pH; also diluents, washing solutions, and standard-value solutions used for a broad array of scientific calibration purposes.
The buffers used to calibrate pH meters may be certified and/or traceable to the National Institute of Standards and Technology (NIST). These buffers may also be color-coded for easy identification:
- Red: pH 4.0
- Yellow: pH 7.0
- Blue: pH 10.0
SINGLET™ Single-Use pH Buffer, pH 7.00 (NIST), Hach Lange™
Hach Lange SINGLET Single-Use pH Buffer, pH 7.00 (NIST), Quantity: 20 pk., Yellow, pH: 7
Hach Company Phenol Red Indicator Solution, 50 mL SCDB
pH Indicator Solution. Color range: pH 6.5-8.5. 50 mL Self-contained Dropping Bottle
Hach Company Hardness buffer solution for HACH SP510, 0.5l, 0.3,1,2,5 mg/l
Hardness buffer solution for HACH SP510, 0.5l, 0.3,1,2,5 mg/l
Hach Company Hach Online Process ORP Sensor - General Purpose Analog ORP Sensor
General Purpose Online Process ORP Sensor - Platinum ORP Electrode, PEEK Housing, Convertible Mount, 4.5m Cable, Analog Cable Connection