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Determination of Water Content in Acetone Using Karl Fischer Titration
Summary application report for analysis of moisture in Acetone
Analysis of Alkylphenols and Alkylphenol Ethoxylates Using new 13C-Labeled and Deuterated Internal Standards According to ISO 18857-2
Alkylphenols are starting materials for the synthesis of alkylphenol ethoxylates, which are widely used as non ionic tensides, dispersive agents in paper and leather manufacturing, emulsifiers for pesticide formulations and as auxiliary agents for drilling and flotation.
Analytical Method: Chlorophyll-a, -b, -c as per APHA 10200-H
Method: Spectrophotometric (trichromatic), method for surface water
Syringe Care
Syringes are precision instruments and need care. Learn to correctly inspect, use, unclog, handle, clean and store them to ensure good accuracy, reproducibility, and lifetime.
AD030 Particle Monitoring Guide – Analysis Techniques – Microscope-Based Techniques
Microscopy is an effective way to determine the nature, size, and source of contamination. In this section, you can find some detailed methods important for optical microscopy, as well as important considerations for scanning electron microscopy (SEM).
Immunofluorescence Labeling of Cells
Cell staining can be divided into four steps: cell preparation, fixation, application of antibody, and evaluation.
Trans Fats in Cookies using SP-2560 and SLB-IL111
Extraction of lipids as fatty acids, and subsequent detection of trans fats from a cookie sample made using partially hydrogenated vegetable oils - a Supelco technical article
HPLC Analysis of Bisphenol A, Dimethylbisphenol A and Nonylphenol on Ascentis® Express RP-Amide (UV Detection)
HPLC Analysis of Bisphenol A, Dimethylbisphenol A and Nonylphenol on Ascentis® Express RP-Amide (UV Detection)
AD030 Particle Monitoring Guide – Analysis Techniques – Microscope-Based Techniques
AD030 Particle Monitoring Guide – Analysis Techniques – Microscope-Based Techniques
Solid Phase Extraction: Normal Phase Methodology
Retention occurs through polar interaction between the sorbent and analytes. Typical sample matrices that can be employed in normal-phase SPE include hydrocarbon or fatty oils diluted in a solvent like hexane, isooctane, chlorinated solvent, THF, diethyl ether, or ethyl acetate.
Enzymatic Assay of Phytase (EC 3.1.3.8)
Derived from procedure SSPHYT02. Includes template updates to current SOP specifications and incorporation of notes into the procedure.
HPLC Analysis of Fatty Acid Methyl Esters (FAMES) on SUPELCOSIL LC-18
Separation of Methyl decanoate; Methyl dodecanoate; Methyl myristate; Methyl palmitate; Methyl caprylate; Methyl oleate; Methyl linoleate; Methyl linolenate; Methyl stearate
Packing a Column and Performing a Separation with Sephadex® LH-20
This page shows how to perform a separation with a Sephadex LH-20 column from GE Healthcare which are Size Exclusion Chromatography media of polysaccharide network made from cross-linked hydroxypropylated dextran beads.
Column Packing and Preparation
This page describes efficient column packing and preparation for affinity chromatography of tagged proteins using GE Healthcare products.
Fraction of cis/trans FAMEs Using Discovery® Ag-Ion SPE
Fraction of cis/trans FAMEs Using Discovery® Ag-Ion SPE
GC Analysis of Class 3 Residual Solvents on SUPELCOWAX® 10
GC Analysis of Class 3 Residual Solvents on SUPELCOWAX® 10
Column packing and preparation for Ion Exchange Chromatography & Chromatafocusing
This page shows how to perform column packing and preparation for ion exchange chromatography and chromatafocusing when using Tricorn or XK columns available from GE Healthcare.
GC Analysis of Fermentation Compounds on a Packed Column (6.6% Carbowax® 20M on 80/120 Carbopack™ B AW)
Separation of Acetone; Acetic acid; Propionic acid; Ethyl butyrate; Ethanol; Isoamyl acetate; Isobutyric acid; 3-Methyl-2-butanol; Methyl acetate; 1-Propanol; Acetal, ≥98%, FG; 2-Methyl-1-pentanol; Butyl acetate; Ethyl propionate; 3-Pentanol; 2-Pentanol, 98%; Ethyl isobutyrate; Isobutyl acetate; Acetaldehyde; Furfural; Butyric acid; Methanol; Ethyl acetate
Qualitative Thin Layer Chromatography Analysis Ginkgo
Qualitative Thin Layer Chromatography Analysis of Flavonoids and Quantification of Terpene Lactones in Ginkgo Biloba Extracts and Tablets
Determination of Water Content in Methyl Ethyl Ketone, 2-Butanone Using Karl Fischer Titration
Summary application report for analysis of moisture in Methyl ethyl ketone, 2-Butanone.
Cleaning Laboratory Glassware
Learn how to properly clean your laboratory glassware to improve your lab technique and insure high quality results. The most carefully executed piece of work may give an erroneous result if dirty glassware is used.
Column Packing and Preparation for Affinity Chromatography with Specific Groups of Biomolecules
Column packing and preparation for Affinity Chromatography with specific groups of biomolecules.
Enzymatic Food Analysis
Enzymatic methods for food analysis are highly specific and offer considerable time and cost savings over other methods, especially from the sample preparation standpoint. We offer a wide variety of convenient kits and reagents for rapid and reliable enzymatic food...
Clinical Application of SPME: Analysis of VOCs in Exhaled Breath as Cancer Biomarkers
This report demonstrates the potential of solid phase microextraction as a clinical research tool for the extraction of VOCs associated with lung cancer from human breath.
US EPA Method 8260: GC Analysis of Volatiles on SPB®-624 after Purge & Trap using "K" Trap, Fast GC Analysis
US EPA Method 8260: GC Analysis of Volatiles on SPB®-624 after Purge & Trap using "K" Trap, Fast GC Analysis
Enzymatic Assay of Laccase (EC 1.10.3.2)
Laccase (EC 1.10.3.2) is a cuproenzyme that oxidizes various types of phenols and similar aromatic compounds aromatic amines with the reduction of molecular oxygen to water, therefore, is used as a biocatalyst.
Preparing the Plexcore® PV 1000 Ink System
Preparing the Plexcore® PV 1000 Ink System
Standards for ISO 18857-2
Analysis of alkylphenols and alkylphenol ethoxylates: Sigma-Aldrich is pleased to offer the complete range of labeled compounds listed in ISO 18857-2 for the analysis of OP, NP and their mono- and diethoxylates.
Fractional Precipitation Protocol for Affinity Chromatography Samples
This page shows describes fractional precipitation for removing gross impurities from affinity chromatography samples with small volumes.
GenElute™ RNA/DNA/Protein Plus Purification Kit
GenElute RNA/DNA/Protein Plus Purification Kit provides a rapid method for the isolation and purification of total RNA, genomic DNA and proteins sequentially from a single sample of cultured animal cells, small tissue samples, blood, bacteria, yeast, fungi or plants.
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