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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.
Identification of fixed oils by Thin layer chromatography
This application note describes the HPTLC-based identification of fixed oils using octadecyl silyl silica gel as the coating substance, following USP 43 NF 38 monograph method containing USP general chapter .
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.
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.
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.
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.
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.
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.
Materials for Clean H2 Production from Bioethanol Reforming
Hydrogen is one of the most important resources in providing food, fuel, and chemical products for our everyday life. Sustainable catalytic hydrogen production from bioethanol has gained significant attention in recent years due to globally diminishing fossil fuel supplies, which
Sepharose® High Performance: Purification with High Resolution
Here we discuss purification options when working with Sepharose® High Performance and we present some examples of media screening, capture and purification.
Deoxyfluorination with 2-Pyridinesulfonyl Fluoride (PyFluor)
The prevalence of organofluorine compounds in industry and drug design necessitates the ability to introduce C–F bonds to molecules.
Fullerenes for Bioscience & Photovoltaic Applications
Find various photovoltaic and bioscience-based applications of fullerenes.
ChiPros Chiral Alcohols
Chiral alcohols form a versatile class of chiral synthons, since they can be incorporated into the API structures directly as esters or ethers.
Quantum Dots: An Emerging Class of Soluble Optical Nanomaterials
We presents an article concering Quantum Dots: An Emerging Class of Soluble Optical Nanomaterials.
Sepharose Fast Flow: Purification with Good Resolution and Easy Scale-Up
This page covers the use of Sepharose Fast Flow for purification of proteins.
Sepharose High Performance: Purification with High Resolution
This page covers the use of Sepharose High Performance media for purification of proteins, peptides or oligonucleotides, when to use them, and with which systems.
Immunohistochemistry Applications in Gastrointestinal Cancer
Colorectal cancer is the third most common cancer in both men and women. An estimated 136,000 cases of colorectal cancer are expected to occur in 2016.
ChiPros Chiral Amines
Chiral amines play an important role in stereoselective organic synthesis. They are used directly as resolving agents, building blocks, or chiral auxiliaries.
Understanding Sweet Taste Perception
The powerful effect of the pleasurable sensation arising from sweet tasting foods has led to consumer demand and large-scale production of the caloric sweetening agents sucrose and fructose.
Isopropanol Molecular Biology Reagent
Isopropanol is a polar organic solvent that is widely used in chemistry, biochemistry and molecular biology
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.
Biomedical Implant Devices Fabricated from Low Young’s Modulus Titanium Alloys Demonstrating High Mechanical Biocompatibility
Biomedical implants are essentially foreign substances within the human body that must survive many years’ exposure to demanding mechanical and physiological conditions. Despite these challenges, metal implants have been widely used to substitute for or rebuild hard tissues such as
Conjugated Polymers for the Engineering of Device/Tissue Interface
Conjugated polymers offer charge transport between inorganic, electrically conducting metals and organic, proton-conducting biological systems.
N-Heterocyclic Carbene-Copper Complexes
N-Heterocyclic Carbene-Copper Complexes
Alkaline Phosphatase
We offer a broad range of alkaline phosphatase enzymes and substrates that are optimized for conjugation to antibodies and other proteins for your specific application needs.
Synthesis, Properties, and Applications of Perovskite-Phase Metal Oxide Nanostructures
Synthesis, Properties, and Applications of Perovskite-Phase Metal Oxide Nanostructures
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