Pyrimidine isomers

Pyrimidine isomers

5-Nitrofurfural (Aromatic aldehyde)

LC-MS: Furan-carboxylic acid and -sulfonic acid

Furfural (Aromatic aldehyde)

Furfural (Aromatic aldehyde)

Furfural (Aromatic aldehyde)

Furfural (Aromatic aldehyde)

Furfural (Aromatic aldehyde)

Furfural (Aromatic aldehyde)

LC-MS: Components in permanent wave lotion (2)

LC-MS: Components in permanent wave lotion (2)

LC-MS: Components in permanent wave lotion (2)

Hematoxylin (Histology Stains)

Hematoxylin (Histology Stains)

Indocyanine Green (Near infrared fluorescent dye)

Aminonaphtholsulfonic acid isomers

Indigo (Dye, Pigment)

Indigo (Dye, Pigment)

LC-MS: Aminonaphtholsulfonic acid isomers

LC-MS: Aminonaphtholsulfonic acid isomers

Carboxyphenylboronic acid

Aminophenylboronic acid

LC-MS: Hydroxybenzenedisulfonic acids

Chlorophenylboronic acid

LC-MS: Aryl and alkyldisulfonic acids

Methylphenylboronic acid

LC-MS: Arylboronic acids

Chlorophenylboronic acid

Photoinitiator

Photoinitiator

Fluorophenylboronic acid isomers

LC-MS: Styrene urinary metabolites

LC-MS: Styrene urinary metabolites

Styrene urinary metabolites

Styrene urinary metabolites

Isatin derivatives

Indole derivatives

3,3'-Diaminobenzidine

LC-MS: Isocyanate metabolites

LC-MS: didecyldimethylammonium chloride (Disinfectants)

N,N'-Diphenylethylenediamine (nitrogen-containing ligand)

N,N'-Diphenylethylenediamine (nitrogen-containing ligand)

Lignin

Lignin

Lignin

LC-MS: phosphoric acid, medronic acid, ethidronic acid

LC-MS: Chloromandelic acid isomers

Azodicarbonamide (Foaming agent)

LC-MS: PPDs and HMMM (rubber additives)

LC-MS: Piperidone related compounds

PPDs (rubber antioxidant)

PPDs (rubber antioxidant)

PPDs (rubber antioxidant)

LC-MS: Hindered amine light stabilizers

LC-MS: Hindered amine light stabilizers

Hindered amine light stabilizers

Hindered amine light stabilizers

LC-MS: Electrolytes and additives of lithium-ion battery

LC-MS: Electrolytes and additives of lithium-ion battery

Polyoxethylene Lauryl Ether (Nonionic Surfactant)

Polyoxethylene Lauryl Ether (Nonionic Surfactant)

Polyoxethylene Lauryl Ether (Nonionic Surfactant)

Alkylbenzenesulfonates (Anionic Surfactants)

prohibited 14 colors for food (Artificial coloring)

prohibited 14 colors for food (Artificial coloring)

prohibited 14 colors for food (Artificial coloring)

prohibited 14 colors for food (Artificial coloring)

prohibited 14 colors for food (Artificial coloring)

prohibited 14 colors for food (Artificial coloring)

Orange 2 (Artificial coloring)

Martius Yellow (Artificial coloring)

Acid Green 3 (Artificial coloring)

Uranine (Artificial coloring)

Acid Green 9 (Artificial coloring)

Acid Blue 1 (Artificial coloring)

Acid Violet 6B (Artificial coloring)

Orange 1 (Artificial coloring)

Light Green SF Yellowish (Artificial coloring)

Naphthol Yellow S (Artificial coloring)

Eosin (Artificial coloring)

Acid Blue 3 (Dye)

Basic Blue (Dye)

Crystal violet (Dye)

Basic Violet 1 (Dye)

Leuco Malachite Green (Dye)

LC-MS: fluoroorganic acid

Pararosaniline (Dye)

Cholesteric Liquid-crystal materials

Azoxybenzene (Liquid-crystal materials)

Nematic, Smectic Liquid-crystal materials

Nematic, Smectic Liquid-crystal materials

Nematic, Smectic Liquid-crystal materials

Cetylpyridinium (Disinfectant)

Cetylpyridinium (Disinfectant)

Cetylpyridinium (Disinfectant)

Difluorobenzene isomers

Cresol isomers

LC-MS: 4-Methylmidazole in Cola and Instant Coffee

LC-MS: 4-Methylmidazole in Dark Beer

LC-MS: Methylmidazole isomers

Sudan Dye, impurities

Phthalate esters

LC-MS: Sulfonic acids and sulfuric acids

LC-MS: Polyvalent acids (Normal-Phase Mode)

Azulene

Sodium alkyl sulfates (SAS)

LC-MS: Perfluoroalkyl acids (PFAA)

LC-MS: Aliphatic amines

Benzethonium chloride, Benzalkonium chloride

Steric selectivity (isomers)

Steric selectivity

LC-MS: Fe(III)-EDTA and Cu (II)-EDTA

LC-MS: EDTA and Related Compounds

LC-MS: Ionic Lquid (1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide)

SEC: Alkylbenzenesulonate (LAS)

DMF (dimethyl formamide), DMSO (dimethyl sulfoxide)

LC-MS: Bromate and anions

The Scherzo SM-C18 and Unison UK-Amino columns successfully separate the small, polar ascorbic acid related compounds in normal phase mode.

The Unison UK-Phenyl column separates surfactants of different lengths better than a standard C18 column.

The Cadenza HS-C18 column is able to retain organotin compounds with nice, sharp peaks.

The Scherzo SW-C18 column is able to retain compounds with multiple amine functionalities.

The Scherzo SS-C18 column is able to retain compounds with multiple amine functionalities.

The Scherzo SM-C18 and SS-C18 show excellent resolution of these small molecules, which normally coelute on a standard C18 column.

Both Presto FF-C18 and Intrada WP-RP can elute this large protein. Intrada WP-RP shows sharper peaks, meaning it can better recognize its structural components than Presto FF-C18.

LC-ICP-MS analysis of Cr(III) and Cr(VI)

LC-MS analysis of phosphorus-containing amino acid type herbicides and their metabolites

LC-MS/MS analysis of [leuco]malachite green (MG, LMG)

LC/MS analysis of perfluorinated organic compounds (PFC's) in seawater

Surfactants

Zinc Pyrithione, Copper Pyrithione

Cations

Bisphenol A

Diisononyl phthalate

Chromium (III) nitrate and ammonium chromate(VI)

Sodium thiosulfate

Phthalate esters

Aromatic carboxylic acids

Benzathonium chloride

Benzalkonium chloride

Sodium Sulfite in Red Wine

Polycyclic aromatic hydrocarbons

Levulinic Acid, Lactic Acid and methyl Esters

Denatonium benzoate

Denatonium benzoate

Aliphatic Amines

Sudan Dyes

Malachite Green and Metabolite

Acrylic Monomers

Acrylamide and Methachrylamide

Acrylic Monomers

Melamine & related compounds

Melamine & Cyanuric Acid

PFAAs

Antioxidants

Polyethylene glycol # 2000, 6000, 12000

PEG can be separated by both reversed phase and normal phase chromatography. Reversed phase using the Cadenza CW-C18 column gives baseline resolution as well as better run time.

The Cadenza CW-C18 column effectively separates triarylmethane ink dyes because of chelating properties.

Igepal CO-720

Triton X-100

Fatty acids

Anion surfactants

Anion surfactants

PAHs

Terphenyl related compounds

Dinitrobenzene

phthalonitriles

Aromatic boronic acids

Positional Isomers on CL-C18

Separation Properties of Polycyclic Aromatic Compounds on CL-C18

EDTA-Chelates

Pyromellitic acids

The reverse phase separation of the hydrophillic organic solvent dimethyl sulfoxide (DMSO) is difficult. However, our silica columns make a nonaqueous normal phase separation possible.

Aniline, methylaniline and dimethylaniline separation with UK-C18.

Analysis for antioxidants of plastics in food.

Separation of aromatic sulfonate using a volatile ion pair reagent.

Normal phase separation of acrylamide, the presence of which in common foods has caused health concerns.

Analysis of an antioxidant food additives.

Analysis of phenylenediamine type organic EL materials.

Separation of isomers of the polymerization inhibitor methoxyphenol.

Separation of isomers of the polymerization inhibitor hydroquinine.

Oxine-copper

Superior separation of US-C18 compared to competitor columns.

Comparative separation of organic acids with various stationary phases of the Unison series.

Comparative retention of the highly polar compound acrylamide in the Unison series using 100% aqueous mobile phase.

Cadenza is superior in recognition of varied degrees of polymerization in molecules.

Separation of p-dichlorobenzene and isomers, which are possible causes of "Sick House Syndrome"

Comparison of peaks in the separation of fullerenes.

Highly sensitive analysis of fullerenes and higher fullerenes with semi-micro columns.

Analysis of impurities in hexane solvent differs depending on the grade.

High speed separation of phthalic acid isomers using short columns.

Complete resolution of the difficult to separate cresol isomers is possible with addition of beta-cyclodextrin.

High speed separation of blue, yellow and red pigments.