Tag: <span>Concentration</span>

FeaturedSample PreparationTechnical Tips

Solid Phase Extraction FAQs: What is SPE and How Does it Work?

October 11, 2018 Science UnfilteredLeave a comment

Solid Phase Extraction FAQs Answered! Ashmeeta Chera, Phenomenex Sample Preparation Sales Manager and Matt Brusius, Phenomenex Sample Preparation Product Manager, discuss the major Solid Phase Extraction FAQs such as “what is Continue Reading

Tagged 96-well plates,batch processing,catch and release,Concentration,Elution,FAQs,Frequently Asked Questions,liquid liquid extraction,lle,Sample Prep,Sample Preparation,sample preparation products,Solid Phase Extraction,Solid Phase Extraction FAQs,SPE,SPE demonstration,SPE Steps,Strata,traditional SPE

Sample Preparation

Beta-Glucuronidase Removal: Urine the Right Place

June 27, 2016June 27, 2016 Science UnfilteredLeave a comment

Whether it be for a job interview or medical diagnosis, most of us have found ourselves in the vulnerable position of peeing into a cup. And though it may feel invasive or embarrassing, urine tests are remarkably helpful to doctors, courts, and hiring managers alike.

Tagged Analytes,Analytical Chemistry,Analytical Science,B-Glucuronidase,Beta-Glucuronidase,Beta-Glucuronidase Removal,Bonds,Chemistry,Chromatography,CNN,Column,Column Chromatography,Column Death,Columns,Concentration,Dilute,Dilute-and-Shoot,Dilution,Drug,Drug Test,Drug Testing,Drugs,Enzymatic,Enzymatic Hydrolysis,Enzyme,Glucuronidation,Heroin,High Performance Liquid Chromatography,High Pressure Liquid Chromatography,HPLC Column,Hydrolysis,β-Glucuronidase,β-Glucuronidase Removal,Jenny Cybulski,LC/MS,Liquid Chromatography (LC),Marijuana,Mass Spec,Mass Spectrometry,Opiate,Opiates,Opioid,Pee,Phenomenex,PPT,Protein Precipitation,Removal,Sample,Sample Prep,Sample Preparation,Samples,Science,Sensitivity,Separation,Separation Sciences,Urination,Urine,Urine Test,Urine Testing

Liquid Chromatography (LC)Technical Tips

Technical Tip: Peak Apex Flattening

February 19, 2016April 15, 2016 Science UnfilteredLeave a comment

Peak shape issues at the apex of a peak are typically related to detector saturation. This symptom can be observed as flattening and/or noise at the peak apex.

Tagged Absorbance,Analysis,Analytical,Analytical Chemistry,Analytical Science,Apex,Assay,Beer's Law,Beer-Lambert,Beer-Lambert Equation,Beer-Lambert Law,Calibration,Chemistry,Chromatogram,Chromatograms,Chromatographer,Chromatographers,Chromatography,Co-Efficient,Column,Column Chromatography,Columns,Concentration,Core-Shell,Detection,Detector,Detector Saturation,Extinction,Flat,Flat Peak,Flat Peaks,Flattening,Fraction,Fraction Collecting,High Performance Liquid Chromatography,High Pressure Liquid Chromatography,High-Load:Low-Load,HILIC,HPLC Column,HPLC/UHPLC,Impurities,Impurity,Inject,Injection,Ion Exchange,Ion Exclusion,Lambert-Beer Law,Linear Calibration,Liquid Chromatography (LC),Molecule,Molecules,Noise,Normal Phase,Path Lengths,Peak,Peak Apex,Peak Apex Flattening,Peak Flattening,Peak Height,Peak Shape,Peaks,Quantification,Quantify,Reversed Phase,Sample,Samples,Saturation,Science,Separation Sciences,Transmittance,UHPLC,UHPLC Column,UV,UV Detection,UV/Vis

Sample Preparation

SPE Method Validation Terms: Precision and Accuracy

January 19, 2016September 1, 2016 Science Unfiltered2 Comments

In the heart of every good chromatographer is a solid understanding of the most crucial vocabulary. For those practicing solid phase extraction, precision and accuracy are fundamental components to their craft.

Tagged Accuracy,Accuracy and Precision,Accurate,Analyst,Analytical,Analytical Chemistry,Analytical Science,Analyze,Bio,Bioanalytical,Chemistry,Chromatography,Compound Analysis,Concentration,FDA,High,Inter-Day,Intermediate Precision,Intra-Day,LLOQ,Low,Low Medium High,Lower Limit of Quantitation,Medium,Method,Method Development,Method Validation,Pharma,Pharmaceutical,Phenomenex,Precise,Precision,Quantitation,Relative Standard Deviation,Repeat,Repeatability,Reproduce,Reproducibility,RSD,Science,Separation,Separation Science,Separation Sciences,Solid Phase Extraction,SPE,SPE Method Validation,SPE Method Validation Terms,SPE Terms,Terms,Validate,Validation,Variation,Variations,Vocabulary