Peter Froehlich

Generating Nitrogen for Nuclear Magnetic Resonance Spectroscopy
Thursday, September 01, 2011
Nuclear magnetic resonance (NMR) spectroscopy is an extremely important tool in the elucidation of molecular structure and is commonly used to obtain information about the interaction between ... read more
Providing Purge Gas for FTIR Systems
Monday, April 18, 2011
While a Fourier transform infrared (FTIR) spectrophotometer provides a number of benefits relative to a scanning IR spectrophotometer,a significant disadvantage of an FTIR system is that the presence ... read more
Advantages of In-House Generation of Nitrogen for HPLC With Evaporative Light Scattering Detection
Friday, January 01, 2010
Evaporative light scattering detection (ELSD) is a universal detection technique for HPLC that provides a number of distinct advantages over other commonly employed detection methods such as UV-VIS ... read more
Is Bottled Nitrogen a Greenhouse Gas?
Saturday, March 01, 2008
The level of greenhouse gases such as CO2 is believed by scientists to have a dramatic, unfavorable impact on worldwide climate change. read more
Providing Gases for LC-MS Systems in a Safe, Convenient, and Cost-Effective Manner
Wednesday, August 01, 2007
A liquid chromatographic system with a mass spectrometric detector (LC-MS) requires a supply of nitrogen as the curtain gas, pure zero grade air as the source gas, and dry (–40 °F dewpoint) air as the... read more
Use of Microcoil Probes to Acquire More Sensitive NMR Spectral Data
Tuesday, February 01, 2005
Nuclear magnetic resonance (NMR) spectroscopy is a powerful analytical technique that is commonly used to provide structural information as well as other chemical metrics such as sample composition ... read more
Optimizing the Sensitivity of an Evaporative Light Scattering Detector
Tuesday, October 12, 2004
The evaporative light scattering detector (ELSD) is a universal, mass-based detector for HPLC, ultraperformance liquid chromatography (UPLC), gel permeation chromatography (GPC), and supercritical ... read more