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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).

Solving Aspartimide Formation in Fmoc SPPS with Fmoc-Asp(OBno)-OH

Aspartimide formation 1,2 is caused by repeated exposure of aspartic acid-containing sequences to bases like piperidine and can result ultimately in the generation of 9 different by-products.

Analysis of Antioxidants in Bakery Products

HPLC-UV method detects 9 antioxidants like propyl gallate in food using a Discovery®</sup HS C18 column for excellent peak shapes.

Ascentis® Express Biphenyl UHPLC and HPLC Columns

The bonded, densely endcapped, dimethyl-biphenyl stationary phase of Ascentis® Express 90 Å Biphenyl, based on fused-core particles, provides a stable, reversed phase packing with enhanced π-π and mild steric interactions due to the two sequential phenyl groups bonded to the

Merck back-to-school season, New user’s gift upgrade

默克开学季，新人礼、首单礼，双重惊喜助力科研 2023年9月1日到10月31日，开学季，新人礼，限时开启。

Salmonella Detection in the Food Chain (EN ISO 6579-1)

EN ISO 6579-1 standard specifies detection of Salmonella spp. in human consumption, animal feed, and environmental samples.

Quantitative Analysis of Nitrosamine Impurities by LC-MS Methods from the United States Pharmacopeia General Chapter <1469>

This application note describes the LC-MS-based quantitative analysis of known nitrosamine impurities following procedures 1 and 3 as given in USP general chapter .

BIOshell HPLC and UHPLC Columns

Discover BIOshell™ HPLC and UHPLC columns featuring Fused-Core® technology designed for rapid and efficient separation of proteins, peptides, and glycans.

Virus Concentration by Ultrafiltration

Ultrafiltration using Amicon® Ultra centrifugal devices for concentrating virus in preparation of high titer virus stocks and isolation of virus from samples.

Egg-based and Cell-based Influenza Vaccine Manufacturing Methods

Influenza vaccines are commonly made using egg-based and cell-based manufacturing strategies. Find step-by-step information on the manufacturing process for each method.

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