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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.

Phyllosilicate Clay Minerals: Principles and Applications

We have discussed shortly the applications of 1:1 and 2:1 phyllosilicate material in membrane technology, as well as the basic geometric understanding of their layered structures.

Perovskite Solar Cells in Energy

Layer by layer deposition of perovskites with novel ionic liquids achieves 24% power conversion efficiency.

OSHA Method 52: GC Analysis of Formaldehyde on SUPELCOWAX 10 After Collection/Desorption Using ORBO-24

Separation of Formaldehyde solution

X-tremeGENE™ 9 DNA Transfection Reagent Protocol

Plate cells approx. 24 hours before transfection making sure cells are at optimal concentration (70 – 90 % confluency).

Controlled Release Society Annual Meeting 2023

The CRS 2023 Annual Meeting and Expo being held at the Paris Hotel, Las Vegas, Nevada, July 24-28, 2023.

The following procedure has been evaluated with Ficoll-Paque PLUS and is recommended for separation of normal blood samples for maximum reproducibility.

X-tremeGENE™ HP DNA Transfection Reagent Protocol

Cell preparation for transfection Plate cells approx. 24 hours before transfection making sure cells are at optimal concentration (70 – 90 % confluency).

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.

Downloadable 96 Well Plate Templates

We offer downloadable and printable 24, 48 & 96 well plate templates in PDF, JPG, PNG and SVG formats for design experiments performed in a well plate

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.

TRC Library Citations

TRC 1.5 human and mouse shRNA libraries

Role of High Purity Metal Salts in Chemical Synthesis

Discover the ways in which high-purity metal salts improve the selectivity, yields, and catalytic efficacy of organic synthesis reactions.

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

Anchor - New Energy Vehicles Color Trends

We introduce the new energy vehicle color trends, utilizing pearlescent pigments, under the impetus of innovation and sustainable development, creating 3 major themes and 24 new energy vehicle color styles.

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.

KitAlysis™ High-Throughput Screening Platform

KitAlysis High-Throughput Screening Kits provide solution to efficiently identify or optimize suitable catalytic reaction conditions. Chemist can rapidly run 24 unique micro scale reactions in parallel with tailored conditions.

Recent Advances in Scalable Synthesis and Processing of Two-Dimensional Materials

Advances in scalable synthesis and processing of two-dimensional materials

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.

Neuroscience 2025

Scientists from around the world will congregate at Neuroscience to discover new ideas, share their research, and experience the best the field has to offer.

Events

Experience our products firsthand at regional, national, and international tradeshows and industry events.

NMR Deuterated Solvent Properties Reference Chart

Use this reference table to find the coupling values and chemical shifts of our NMR (deuterated) solvents. Melting and boiling points, molecular weight, density, and CAS number are also listed.

Paper-Bridge Loading

This page shows how to apply higher sample volumes and protein amounts with paper bridges in isoelectric focusing with Cytiva products

Preparing for IEF

This protocol shows how to prepare the Immobiline® DryStrip Kit and electrodes strips.

Applying Equilibrated Immobiline® DryStrip Gels

This page describes how to apply equilibrated Immobiline® DryStrip gels on the ExcelGel SDS gels.

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