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Articles by Shimadzu

Shimadzu


Articles
Techniques for Reducing the Effects of Sample Solvent on UHPLC Analyses
September 24, 2014

For HPLC, sample solvents that adequately dissolve target compounds are required; therefore, sample solvents that contain a high concentration of organic solvent are often used for reversed phase chromatography. However, these solvents sometimes cause peak broadening. This paper presents techniques to reduce the effects of sample solvents using recent widespread UHPLC analyses as examples.

Ultra-high Speed HPLC Analysis of USP Methods within the New USP General Chapter 621 Allowed Limits
July 30, 2014

This paper examines the key parameters of allowed HPLC adjustments in the current and revised USP general chapter 621. It then demonstrates the successful transfer to an ultra-high-speed method, reducing analysis time and solvent consumption, and the ability to run on a UHPLC system without changing method parameters.

FT-IR Analysis of Dimethicone Based on USP-Specified Method
September 25, 2012

When analyzing viscous solutions by FTIR spectroscopy, the ATR method is particularly effective because the close contact between the sample and prism is easily achieved. This application illustrates an example with the analysis of dimethicone, with good repeatability clearly obtained.

FT-IR Analysis of Dimethicone Based on USP-Specified Method
September 1, 2012

When analyzing viscous solutions by FTIR spectroscopy, the ATR method is particularly effective because the close contact between the sample and prism is easily achieved. This application illustrates an example with the analysis of dimethicone, with good repeatability clearly obtained.

TOC Measurement of Samples Per USP <643>
June 1, 2012

The United States Pharmacopoeia has established guidelines for determining system suitability and established the acceptance of Water For Injection (WFI) purposes and Purified Water (PW) (USP Method <643>). This papers examines the use of Shimadzu’s TOC for meeting these requirements.

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