pH 4.00 Buffer Solution, 1 Quart (950 mL). NIST Traceable.

Key features

• NIST Reference Calibrated
• QR Codes on Labels Lead to Downloadable COAs
• Color-Coded for Easy Reference
• Lot Numbered and Expiration Dated on Convenient Water Proof Label
• Individual Bagged 1 Quart Bottle
• For Pharmaceutical, Academic, Research and Industrial Labs

This buffer calibration solution is suitable for the calibration of all pH meters. Each production lot is manufactured in our own laboratory following carefully controlled, written procedures and standardized against NIST standard reference materials (SRM) for high accuracy. The finished product is assigned a unique Lot number and expiration date. These products will have greater than one year shelf life when received. Certificate of analysis and traceability included.

Free shipping included. 30-day hassle-free returns.