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218-491-7
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Showing 1-30 of 587 results for "218-491-7" within Site Content
Determination of 7 Nitrosamines in Drinking Water
Nitrosamines analysis by solid phase extraction (SPE) and subsequent gas chromatography-tandem mass spectrometry (GC-MS/MS) according to GB 5750.10-2023.
Estimation of Proline in Fruit and Vegetable Juices
Spectrophotometric determination of proline by the Ninhydrin method, per EN 1141 and German Food and Feed Code §64 LFBG 31.00-7.
RNA Therapeutics & Delivery USA
Visit us at booth #7 to learn about our solutions to help you overcome your mRNA manufacturing and LNP formulation challenges.
cOmplete™, Mini, EDTA-free Protocol
Dissolve one tablet in 10 ml aqueous buffer or water. If high proteolytic activity is present, dissolve one tablet in 7 ml buffer.
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.
Sample Preparation for Chromatographic Purification
This page discusses various aspects of sample preparation for chromatographic purification.
Scepter™ 3.0 Cell Counter – How it Works
Scepter™ counting is 7 to 10 times faster than hemocytometry-and also faster than other automated counters. Learn more about how this amazing technology works
Enzymatic Assay of Cathepsin B
Cathepsin B is a lysosomal cysteine proteinase with broad specificity. This protocol uses Nα–CBZ–Arg–Arg–7–amido–4–methylcoumarin as the substrate for fluorometric detection of Cathepsin B activity.
Sample Preparation for Affinity Chromatography in Specific Groups of Biomolecules
Sample Preparation for Affinity Chromatography in Specific Groups of Biomolecules
Assay of Betamethasone Sodium Phosphate by HPTLC
Development of an HPTLC based method, using Silica Gel 60 F254 plate, to determine Betamethasone Sodium Phosphate over a concentration range of 1 to 7 µg/spot.
Ultrapure Water for Sensitive LC-MS Analysis of Pesticides
Pesticides analysis by LC-MS needs pesticide-free reagent water, which can be reliably delivered by Milli-Q® IQ 7 ultrapure water systems. See data.
In Vitro Differentiation of Human PBMC and CD34+ Derived Monocytes into Mature CD83+/CD14- Dendritic Cells
Generate mature human dendritic immune cells from PBMCs or CD34+ stem cell derived monocytes in 7 days in defined and serum-free dendritic cell culture media. Explore over 350 PromoCell products.
Obtaining Ultrapure Water for Sensitive PFAS Analysis by LC-MS
Sensitive PFAS testing can be performed with ultrapure water from a Milli-Q® IQ 7 system, which eliminates detectable PFAS for reliable LC-MS/MS results. See the science, see the proof.
3D Mammosphere Culture Media
3D mammosphere culture protocol used to expand human MCF-7 and MDA-MB-231 breast cancer cells in serum-free/xeno-free stem cell culture media. Explore over 350 PromoCell products on Sigma.com.
Hematopoietic Cytokines
Read article on hematopoietic cytokines and hematopoiesis
Sensor Dyes
Nitric oxide (NO) as a signal transporter in neurons, endothelial cells and in the immune system.
Rapid Determination of Protein Binding Affinity Using Solid Phase Microextraction
Accurate protein binding affinities were measured using bioSPME more rapidly than membrane dialysis (RED) techniques. Binding affinities correlated to the reference values.
TokeOni: Properties and Applications
Bioluminescence imaging (BLI) systems allows for high-sensitive and noninvasive monitoring of cell proliferation, activity of signaling pathways and protein-protein interactions in living tissues.
Cannabis Testing Products
Look no further…you’ve found all the solutions you need for your end-to-end cannabinoid testing workflow. From sample prep and chromatography columns to certified reference materials, water purification systems, and hygiene monitoring, we have the most comprehensive selection of analytical &
In Vitro Expansion of CD34+/CD38- Human Hematopoietic Progenitor Cells in a Serum-free and Xeno-free Stem Cell Culture Media
In vitro culture of human hematopoietic stem cells in PromoCell’s serum-free/xeno-free HPC Expansion Medium DXF. Explore over 350 PromoCell products
Chitosan Biopolymer from Fungal Fermentation for Delivery of Chemotherapeutic Agents
Chitosan is a naturally occurring polysaccharide ideally suited for use in medical supplies, devices, therapeutics, and diagnostics. The unique natural characteristics of chitosan include its cationic, biocompatible, biodegradable, non-toxic, non-immunogenic, and antimicrobial properties.
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.
Electrospun Nanofibers for Drug Delivery Systems
Local delivery of bioactive molecules using an implantable device can decrease the amount of drug dose required as well as non-target site toxicities compared to oral or systemic drug administration.
VEGF Pathway
Read review on VEGF signaling pathway (Vascular endothelial growth factor (VEGF)/VEGF receptor) and find related products.
ChemMatrix® Resin for solid phase peptide synthesis
ChemMatrix® is a proprietary, 100% PEG (polyethylene glycol) based resin from PCAS BioMatrix.
Smart Oligonucleotide Delivery by Multifunctional Block Copolymers
Kanjiro Miyata (The University of Tokyo, Japan) provides insights on the rational design of polymeric materials for “smart” oligonucleotide delivery.
NF-κB and Inflammation
Chronic inflammation is an underlying factor in the development and progression of many of the chronic diseases of aging, such as arthritis, atherosclerosis, diabetes, and cancer.
Sun Care for Every Day
When we think of sun protection, summer days at the beach often come to mind. But the truth is, the sun’s rays affect our skin every single day, no matter the season, time of the day or even the weather.
Analysis of 17 Cannabinoids in Hemp and Cannabis
HPLC separation of 17 important cannabinoids including CBD, delta 9 THC and THCA. Read the application note.
Determination of Tanshinone IIA and key ginsenosides
Method development for HPLC-UV quantification of tanshinone IIA and key ginsenosides in Guanxin Danshen Diwan as per the Chinese Pharmacopoeia draft.
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