Industrial

This document describes the application of HPLC with ELSD for high-resolution analysis of triglycerides in cooking oil. ELSD detection offers higher sensitivity and adaptability compared to RI and UV, enabling the detection of low levels of contaminants. The author used a PLRP-S 100Å column and Agilent's ELSD detector for the analysis, and presented a chromatogram of unadulterated cooking oil.

This article describes the analysis of dialkyl phthalates using gel permeation chromatography on Agilent PLgel 3 µm columns. The method is suitable for analyzing low molecular weight polymer additives such as dialkyl phthalates.

This document is a specification sheet for the ASI2302 NPN Silicon RF Power Transistor. The transistor is designed for general purpose Class C power amplifier applications up to 3000 MHz. It features a minimum PG of 9.5 dB at 2 W / 2300 MHz. The transistor is packaged in a hermetic microstrip package and utilizes the Omnigold™ metalization system.

This document discusses the analysis of polyvinylidene fluoride (PVDF) on Agilent PLgel 10 µm MIXED-B and GPC/SEC. PVDF is an important material with a wide range of uses from non-stick coatings to inert packaging materials. However, PVDF can be difficult to analyze by gel permeation chromatography due to its low solubility in common solvents. This challenge can be overcome by using dimethyl sulfoxide as a solvent, Agilent PLgel MIXED-B columns, and operating the GPC system at elevated temperature with appropriate high temperature sample preparation. In this study, three samples of PVDF were analyzed in dimethyl sulfoxide at 95 °C using the Agilent PL-GPC 220 instrument with two Agilent PLgel 10 µm MIXED-B, 300 × 7.5 mm columns. By operating the GPC system at a flow rate of 1.0 mL/min and heating the samples for 4 hours to dissolve them and reduce the solvent viscosity, satisfactory chromatographic separation was achieved.

ASI2304 is a NPN silicon RF power transistor designed for general purpose Class C power amplifier applications. It features high gain, low noise, low power consumption and low on-resistance, making it ideal for use in high frequency and high power amplifiers.

This application note describes the use of Agilent PLgel columns for the separation of low molecular weight polystyrene standards by gel permeation chromatography.

The document describes the features and characteristics of the ASI3000 NPN Silicon RF Power Transistor, which is widely used in general purpose Class C power amplifier applications up to 3500 MHz. Features include a minimum power gain of 7 dB, hermetic microstrip package, and Omnigold metallization system.

Describes the Agilent PLgel MIXED-D and GPC/SEC application for measuring styrene/isoprene block copolymers.

This paper presents the influence of the silica pore size on the separation, efficiency and capacity of a separation using a number of standard compounds. The study uses a prep to process material, SepTech, which uses ultra pure silica as the base particle and a bonding chemistry to give a high carbon load C18 material. Two pore sizes, a 60Å (ST60 10-C18) and a 150Å (ST150 10- C18) were used. The results show that the silica pore size has a large impact on the separation efficiency, resolution and capacity.

This application note describes the optimization of an ion suppression reversed phase HPLC method to detect L-ascorbic acid, and use of the method in the quantitative determination of the acid in fruit juice. PLRP-S columns were used in this investigation. PLRP-S is a rigid macroporous styrene/divinylbenzene HPLC phase with outstanding chemical and physical stability, and high surface area. This chemical stability permits the use of low pH eluents and ion suppression reversed phase HPLC.

This Application Note describes the reverse-phase HPLC method for the analysis of fatty acids using Agilent HPLC systems.

1,12-Dodecyldiphosphonic acid is a phosphorous acid, is polar and has surfactant properties. It consists of two polar heads joined by a non-polar, twelve carbon chain. Agilent Technologies, Inc. published a application note to demonstrate how the Agilent ELSD can be used to analyze 1,12-dodecyldiphosphonic acid.

This document introduces a liquid chromatography technique for analyzing polymers that can detect very small differences in the chemical structures of polymers. This technique uses critical point mobile phases and is more sensitive to small differences in polymer structure than conventional interactive chromatography techniques, making it a more suitable method for these analyses.

This application note describes the use of ion-pair reversed-phase chromatography for the separation of de-protected oligonucleotides, focusing on media and ion-pair requirements.