Acid Number & Base Number Standards

Acid Number (AN) Reference Materials
For the determination of Acid Number in petroleum products. Suitable for use with ASTM D664/IP 177 (by potentiometric titration) or ASTM D974 (by color-indicator titration).

Base Number (BN) Reference Materials
For the determination of Base Number in petroleum products. Suitable for use with ASTM D2896/IP 276 (by potentiometric perchloric acid titration) or ASTM D4739 (by potentiometric titration).