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Ammonium acetate

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Determination of Fipronil and Fipronil Sulfone in Food Using Purospher® STAR RP-18 Endcapped Column and UV Detection
broad spectrum insecticide, egradation product, phenylpyrazole pesticide, World Health Organization (WHO), HPLC, UV, testing of Fipronil and Fipronil sulfone in Food
LC MS Analysis of Nucleotides Effect of pH
ZIC-cHILIC is a densely bonded zwitterionic stationary phase with phosphorylcholine functional groups covalently attached to silica.
Analysis of a Bispecific Monoclonal Antibody Using Size Exclusion Chromatography and Mass Spectrometry
Bispecific antibodies are a new class of biotherapeutics where one therapeutic agent can target two different antigens. This application note demonstrates a new size exclusion chromatographic method for characterizing these new biotherapeutics by mass spectrometry.
HPLC Analysis of Heroin, Cocaine, Amphetamine and MDMA on Ascentis® Express HILIC
Separation of Heroin, analytical standard, ≥98% (HPLC); Cocaine hydrochloride, analytical standard; D-Amphetamine hemisulfate salt solution, 1.0 mg/mL in methanol, analytical standard, for drug analysis; (±)-3,4-Methylenedioxymethamphetamine hydrochloride solution, analytical standard, for drug analysis, 1.0 mg/mL in methanol
Biological Testing for Amphetamine and Methamphetamine Abuse
In this study, optimized methods are presented for sample preparation and chiral chromatography for the LC/MS analysis of amphetamine and methamphetamine enantiomers in urine.
Purification of Protein A-Tagged Proteins
This page shows how to purify protein A-tagged proteins using Cytiva products.
Accurate Biological Testing for Amphetamine and Methamphetamine Abuse Using Chiral HPLC and MS Detection
Optimized sample prep and chiral chromatography methods for the LC/MS analysis of these drug enantiomers in urine
Analytical Method: Tartaric Acid in Water
Photometric determination with Ammonium vanadate
HPLC Analysis of Vitamin D2 and Vitamin D3 on Ascentis® C18
Separation of Ergocalciferol (D2), analytical standard; Cholecalciferol (D3), analytical standard
Sample Preparation in Ion Exchange Chromatography
This page clarifies sample preparation, buffer exchange and desalting, removal of lipoproteins, phenol red, and low molecular weight contaminants in Ion exchange chromatography.
Protocol for Anti Ago-RNA Immunoprecipitation from Mammalian Cells Using the RIP Kit
Procedure and protocol for Anti Ago-RNA Immunoprecipitation from mammalian cells using the RIP kit
Sample Preparation for Chromatographic Purification
This page discusses various aspects of sample preparation for chromatographic purification.
Brilliant Blue G – Colloidal Concentrate Protocol
Brilliant Blue G-Colloidal Concentrate has been designed for post-electrophoresis staining of proteins in IEF, PAGE, and SDS-PAGE gels. Fixing the proteins prior to staining is recommended for maximum sensitivity.
Sample Preparation for Affinity Chromatography in Specific Groups of Biomolecules
Sample Preparation for Affinity Chromatography in Specific Groups of Biomolecules
HPLC Analysis of GMP, GDP and GTP on SeQuant ZIC-HILIC
HPLC Analysis of GMP, GDP and GTP on SeQuant ZIC-HILIC
Sample Preparation for Size Exclusion Chromatography
Samples for chromatographic purification should be clear and free from particulate matter. Simple steps to clarify a sample before beginning purification will avoid clogging the column, can reduce the need for stringent washing procedures, and can extend the life of...
Determination of Additives in Beverages Using Ascentis® Express Columns
RP-Amide and HILIC, both amenable to the analysis of polar compounds, were successfully used to resolve several beverage components, including sugars, vitamins, sweeteners, preservatives, and caffeine.
HPLC Analysis of Salicylic Acid and Acetylsalicylic Acid (Aspirin) on Ascentis® Express OH5
Separation of Salicylic acid, meets analytical specification of Ph. Eur., BP, USP, 99.5-100.5% (calc. to the dried substance); Acetylsalicylic acid, purum, ≥99.0% (HPLC)
HPLC Analysis of Fexofenadine and Related Compound B on CYCLOBOND® I 2000 Phases
The use of alternative chiral stationary phases to CYCLOBOND I 2000 SP suggested by USP, was studied for the analysis of fexofenadine and related compound B.
LC/MS Analysis of Lactic Acid Enantiomers in Urine on Astec® CHIROBIOTIC® R
Separation of L-(+)-Lactic acid, analytical standard; D-(−)-Lactic acid, 93-107%
Sample Preparation for Affinity Chromatography
This page shows how to prepare samples for purification with affinity chromatography.
Determination of l- and d-Lactic Acid Enantiomers by HPLC/MS/MS
Rapid, simple, reproducible chiral separation and quantification of L- and D-lactic acid enantiomers using Supelco’s Astec CHIROBIOTIC® R chiral column and tandem MS.
HPLC Analysis of Fumaric, Oxalic, and Citric Acid on SeQuant ZIC-HILIC
Separation of Fumaric acid; Oxalic acid; Citric acid
HPLC Analysis of Dehydroascorbic Acid and Ascorbic Acid (Vitamin C) on SeQuant ZIC-HILIC
HPLC Analysis of Dehydroascorbic Acid and Ascorbic Acid (Vitamin C) on SeQuant ZIC-HILIC
HPLC Analysis of p-Toluenesulfonic Acid (PTSA) and Pyrimethamine on SeQuant® ZIC-HILIC
Separation of p-Toluenesulfonic acid (PTSA); Pyrimethamine
HPLC Analysis of Sugars and Taurine in an Energy Drink on Ascentis® Express HILIC using UV and ELSD Detection in Series
Protocol for HPLC Analysis of Sugars and Taurine in an Energy Drink on Ascentis® Express HILIC using UV and ELSD Detection in Series
LC/MS Analysis of Nucleotides on SeQuant ZIC-cHILIC
HILIC separation is an alternative that permits sensitive MS detection and without the use of ion-pair reagents.
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