Potency testing in marijuana-infused edibles is an important problem that analytical labs are facing due to the complexity of the involved matrices. Concentration of active ingredients in these edibles can range from a few parts per million to 3.5 parts

Optimize Sample Performance with the SMC^® Plate Washer Evaluation Kit

Learn how to optimize your plate washer performance with the SMC® Plate Washer Evaluation Kit and assay precious samples with confidence.

Performing a Puriﬁcation and On-column Refolding of an Insoluble Histidine-tagged Protein

This page shows how to perform a purification and on-column refolding of an insoluble his-tagged protein from an E. coli culture with HisTrap™ FF columns and ÄKTAprime from Cytiva.

Analysis of Pesticides in Turmeric Powder by LC/MS/MS and GC/MS/MS after Cleanup with Dual-Layer SPE Cartridge

Pesticide residue testing of turmeric and other (dried) spices is challenging due to their complex compositions and high matrix. An efficient SPE clean-up can be achieved by a new Dual-layer cartridge.

Complete Workflow for Comprehensive Cannabis Terpenes Analysis

Complete workflow for the comprehensive analysis of terpenes in cannabis

BINOL and Derivatives

We present an article concerning BINOL and Derivatives.

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.

Thermal Transitions of Homopolymers: Glass Transition & Melting Point

Literature values for the glass transition temperature, (Tg), and melting temperature, (Tm), are given for the more common homopolymers.

Analysis of Pesticide Residues in Ginger Powder Using QuEChERS Extraction and Clean-up with a Novel Dual Layer SPE Cartridge

The odor and pungency of ginger is due to the presence of terpenes, gingerols and shogaols. These compounds contribute to the highly complex matrix of ginger, which subsequently presents a challenge in low level analyses of contaminants. A novel 2-layer

Nucleic Acid Electrophoresis Protocols & Introduction

An introduction to Nucleric Acid electrophoresis and standard protocols for Agarose gel electrophoresis for DNA, RNA & polyacrylamide gel electrophoresis for DNA.

Periodic Table of the Elements

Download the Periodic Table of the Elements with names, atomic mass and number in printable .pdf and image format. Use the periodic table chart by element names in alphabetical order for quick research, reference and lab use.

Solubility Table of Compounds in Water at Temperature

Check the solubility of 128 common inorganic compounds (salts and acids) in water at different temperatures from 0 degrees Celsius to 100 C. Compound formulas are also given in this table of solubility in relation to temperature.

Endothelial Cell Tube Formation Angiogenesis Assay

Cell culture protocol: the endothelial tube formation assay to study angiogenesis using HUVECs and other endothelial cell types. Explore over 350 PromoCell products.

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

Pressure-Temperature Calculator for Solvents

Use the calculator to determine the boiling point or pressure of solvents based on the Antoine Equation and see solvent attributes. View a list of products based on the solvent CAS number.

384- vs. 96-Well Multiplex Analysis of Low-Level Cytokines | MILLIPLEX^® Assays

High sensitivity multiplex panels allow researchers to detect low-level cytokines and study multiple cytokines at once to dive deeper into low-level inflammation processes. See a performance comparison of the 384-well assay and the 96-well assay formats for the MILLIPLEX® Human

Three Methods for Critical Quality Attribute Determination of Monoclonal Antibodies

Step-by-step workflows for the intact mass analysis, peptide mapping, and N-glycan analysis of the monoclonal antibody― adalimumab, for an accurate characterization of the critical quality attributes (CQAs) to ensure drug safety and efficacy. Read more.

Analysis of Fluorescent Dyes Used for Labeling DNA in Microarray Experiments

An article concerning Analyzing Properties of Fluorescent Dyes for Labeling DNA in Microarray Experiments presented by Sigma-Aldrich.com

Simplified LC-MS/MS Method for Glyphosate, AMPA, and Glufosinate in Oat-Based Cereals

A simplified LC-MS/MS method to determine glyphosate and related compounds using a Supel™ Carbon LC U/HPLC column for stability under higher pH conditions and sufficient retention for the polar analytes in the presence of methanol as an extraction solvent.

Sepharose XL – for selected proteins that require very high binding capacity to increase productivity, easy scale-up

This page covers how and when to use Sepharose XL media for purification of proteins.

Sepharose Fast Flow: Purification with Good Resolution and Easy Scale-Up

This page covers the use of Sepharose Fast Flow for purification of proteins.

Virus Cultivation

Cell lines for vaccine production and cultivation of SARS CoV-2 and other viruses. Primary, human diploid, and continuous culture cell lines for the propagation of viruses and virus-based vaccines.

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