Industrial

This application note presents an alternative method for dissolution testing using ultraviolet-visible spectroscopy instead of liquid chromatography.

This application brief describes the application of CEC to the quantitative analysis of parabenes in body lotion. The method needed minimal sample preparation and provided quantitative data.

This application note briefly introduces derivative spectroscopy and illustrates its features and applications using computer-generated examples.

The DS2003, DS9667, and DS2004 are comprised of seven high voltage, high current NPN Darlington transistor pairs. All units feature common emitter, open collector outputs. To maximize their effectiveness, these units contain suppression diodes for inductive loads and appropriate emitter base resistors for leakage. The DS2003, DS9667 has a series base resistor to each Darlington pair, thus allowing operation directly with TTL or CMOS operating at supply voltages of 5.0V. The DS2004 has an appropriate input resistor to allow direct operation from CMOS or PMOS outputs operating from supply voltages of 6.0V to 15V. The DS2003, DS9667, DS2004 offer solutions to a great many interface needs, including solenoids, relays, lamps, small motors, and LEDs. Applications requiring sink currents beyond the capability of a single output may be accommodated by paralleling the outputs.

Peak 2 was correctly identified to contain only tyrosine, peak 3 contained neither tyrosine nor tryptophan and peaks 4 and 6 contained only tryptophan (figure 1). Second derivative spectra can be used to emphasize small spectral differences in similar molecules. This is especially useful for identifying tryptophan and tyrosine residues in peptides (figure 2).

The DS2003 is comprised of seven high voltage, high current NPN Darlington transistor pairs. All units feature common emitter, open collector outputs. To maximize their effectiveness, these units contain suppression diodes for inductive loads and appropriate emitter base resistors for leakage. The DS2003 offers solutions to a great many interface needs, including solenoids, relays, lamps, small motors, and LEDs. Applications requiring sink currents beyond the capability of a single output may be accommodated by paralleling the outputs.

This document introduces a method for detecting the purity of synthetic �-homo polylysine (250) using capillary electrophoresis. Experimental results show that the purity of synthetic �-homo polylysine (250) in 50 mM phosphate buffer (pH 2.0) solution is greater than 99.7%.

This Application Note illustrates how to isolate and purify reaction byproducts using the Agilent 1100 Series purification system (AS) and demonstrates that large-scale pooling can be elegantly facilitated by incorporating the funnel tray into the Agilent 1100 Series fraction collector AS.

This application note describes how to isolate active natural products from red clover using the Agilent 1100 Series purification systems.

This Application Note describes how an evaporative light scattering detector (ELSD) can be used with the Agilent 1100 Series purification system for peak-based fraction collection. The system setup is described, and an example is shown of how an ELSD can be used with the Agilent 1100 Series purification system for peak-based fraction collection.

Poroshell 300SB is a high-resolution, high-sensitivity, and high-speed protein laboratory reagent, suitable for situations with limited sample size, a large number of samples, and a need for rapid separation of contaminants. It provides ultra-sharp peaks in a short run time and requires less sample. Increased temperature allows for shorter run times, increased resolution by sharpened peaks, and reduced mobile-phase viscosity for maximal throughput.

This document describes the features and characteristics of the DS2002SF rectifier diode, including double side cooling and high surge capability. It is mainly used in rectification, freewheel diode, DC motor control, power supplies, welding, and battery charger applications.

This document introduces a high-efficiency method for separating nucleosides using reversed-phase separation with protected-bonded-phase columns.