Pickering Laboratories, Inc. products

The newest post-column instrument from Pickering Laboratories, part of our integrated family of instruments, chemistry and support.

Part of the complete integrated system of instruments, chemicals, columns, methods and support from Pickering Laboratories.

Vector PCX serves as another post-column choice ideal for application-specific methods. Vector PCX provides the selectivity and sensitivity required for most standard post-column applications while being reliable and easy to use. Since Vector PCX does not have a column oven it is important to use the HPLC column oven to ensure stable column temperature and prevent retention time drifts and separation problems.

Detection Enhancement for Aflatoxins, Phenylurea Pesticides, Barbiturates and Other Compounds.

Keep your Pinnacle PCX running perfectly with Pickering Laboratories certified  replacement parts.

Pickering restrictors are tubes packed with sized diamond particles designed to provide a desired back-pressure, relative to a given flow rate and viscosity. The restrictor tube and fittings are type 316 stainless steel or PEEK. The diamond packing is chemically and chromatographically inert to all mobile phases.

Cation-exchange GARD™ uses a proprietary material to prevent matrix compounds from passing through (and thereby protecting the analytical column), but allows the analytes of interest to pass unimpeded through the GARD™ and onto the analytical column.

Pickering Laboratories specialize in manufacturing of cation-exchange columns for amino acid analysis. No other techniques, including reversed-phase chromatography, have been shown to match post-column ion-exchange methods in quantitation and reproducibility. Advantages of this method, such as absence of matrix interferences, are especially important in analysis of native samples. Lithium columns and buffers systems have high selectivity and are perfect for physiological fluids and food analysis.

A prepared Reagent for Automated Post-column Derivatization of Primary and Secondary Amines. TRIONE® Ninhydrin reagent is specially formulated for amino acid analysis. It contains Ninhydrin, Hydrindantin (reduced Ninhydrin), a Lithium Acetate buffer, and Sulfolane, a water-miscible organic solvent. The solvent is necessary to maintain the solubility of both the Hydrindantin and the primary amine product, Ruhemann’s Purple. The buffer is required because the reaction is pH dependent. The active ingredients—Ninhydrin and Hydrindantin are required for proper development of secondary and primary amines, respectively.

Aflatoxins and Ochratoxin A are produced by fungi, e.g. Aspergillus and Penicillium species. Therefore both toxin types are found together in many foods and animal feeds, e.g. cereals. Deoxynivalenol, also known as Vomitoxin, is a metabolite of various molds of the genus Fusarium (F. colmorum, F. graminearum) and can often be found together with other mycotoxins. Of significant assistance is the clean-up of extracts by a combined immunoaffinity column (the Afla-OtaCLEAN column) for both Aflatoxins and Ochratoxin A in one step. The subsequent analysis may then be performed by HPLC with postcolumn derivatization or other techniques.