Acid Number (AN) Reference Materials
VHG Labs' AN Reference materials are intended for use in the determination of Acid Number (AN) in petroleum products in accordance with ASTM D664/IP 177 (by potentiometric titration) or ASTM D974 (by color-indicator titration). Each standard is supplied with a full Certificate of Analysis (COA) which states the certified values and uncertainty by both ASTM D664 and D974.
Base Number (BN) Reference Materials
VHG Labs’ BN Reference Materials are intended for use in the determination of Base Number (BN) in petroleum products in accordance with ASTM D2896/IP 276 (by potentiometric perchloric acid titration) or ASTM D4739 (by potentiometric titration). Each standard is supplied with a full Certificate of Analysis (COA) which states the certified values and uncertainty by both ASTM D2896 and D4739.
