pickering laboratories

4-peak Amino Acids Test Mixture in 0.01 N HCl, 0.25 µmole/mL, each (5x1mL/bottle), L-Cysteic Acid, L-Aspartic Acid, L-Threonine, L-Serine PN 1700-0075

Please take note that part number 1700-0070 Amino Acid Test Mixture is obsolete, effective 17 August 2022. A direct replacement is available. The replacement has an additional amino acid, Aspartic Acid, to aid in Onyx PCX and Vector PCX Performance Qualifications for the amino acids method. Cysteic Acid is not retained by the stationary phase so its retention time may be used to troubleshoot void volume problems. The resolution between Threonine and Serine is used to troubleshoot column health and improper fitting placement in your system. See expected chromatogram below.

Please contact Pickering Laboratories Support at (650)694-6700, (800)654-3330, or support@pickeringlabs.com if you have any questions.

Obsolete Part #

Replacement Part #

Replacement Description

1700-0070

1700-0075

4-peak Amino Acids Test Mixture in 0.01 N HCl, 0.25 µmole/mL, each (5x1mL/bottle), L-Cysteic Acid, L-Aspartic Acid, L-Threonine, L-Serine