- NIST-traceable reference materials include a calibration report from an ISO Guide 34 and ISO 17025 accredited laboratory
- Color-coded and colorless buffers available
Cole-Parmer pH buffers are compared against and are traceable to NIST Standard Reference Materials. Each bottle includes a NIST-traceable calibration report supplied by the manufacturer. Color-coded and colorless buffers are available in 500-mL, 1-L, or 4-L packaging sizes. Additional values and packaging sizes are available; . Store at room temperature.