Pickering Laboratories


Li220 & Na220


img-generic2Li220 & Na220

Chromatographic Grade™ Samples and Standards Diluents for Amino Acid Analysis

Use of these diluents is essential to ensuring reproducibility from injection to injection. They establish a uniform pH and ion concentration at the outset, regardless of the source and pre-treatment of the sample. The sample is maintained buffered and at optimum pH for sample storage and analysis.

Use Li220 for prepared physiological samples and to dilute amino acid calibration standards for use with Lithium columns and buffers. Use Na220 for hydrolysate samples and to dilute amino acid calibration standards for use with Sodium columns and buffers.



Pricing & Ordering


Pricing & Ordering

Li220 & Na220 CATALOG INFORMATIONLogin for Prices

Catalog #




Lithium Diluent, pH 2.36, 4 x 250 mL

case (4 x 250 mL/bottle)


Sodium Diluent, pH 2.20, 4 x 250 mL

case (4 x 250 mL/bottle)








Retention Times

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Open for Business: COVID-19 Update

As of right now, Pickering Laboratories, Inc. will remain open during the “Shelter in Place” order for Santa Clara County so as to provide other essential businesses with the support and supplies necessary to operate, including hospitals and clinical laboratories.

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