Welcome Guest
Sign In
Register
Home
Articles
Product Guide
Featured Products
Product Reviews
Product Videos
News
Home
Chemistry
Articles
Application Notes
Application Notes
Sort
Date Published
Title
What Are Emerging Contaminants and Why Are We Concerned?
Friday, April 05, 2019
William Lipps
The term “compounds of emerging concern” (CEC) is used to identify chemical contaminants that have no regulatory standard, have been found in environmental samples, and have potentially adverse ...
Read More
Use of Weighted Least Squares and Confidence Band Calibration Statistics to Find Reliable Instrument Detection Limits for Trace Organic Chemical Analysis
Friday, September 11, 2015
Paul R. Loconto
Instrument detection limits (IDLs or xD) obtained from applying either ordinary least squares/confidence band calibration statistics (OLS/CBCS) or weighted least squares/confidence band calibration ...
Read More
Urinary Drug Testing: Small Changes for Big Improvements in Sensitivity
Tuesday, September 27, 2016
Jenny Cybulski
An oversight or mistake in drug testing can have dire consequences—a positive drug test can ruin the possibility of employment, turn an accident into a lawsuit, or cause a physician to discontinue ...
Read More
Thin-Layer Chromatography/Mass Spectrometry Analysis of Sample Mixtures Using a Compact Mass Spectrometer
Tuesday, May 12, 2015
Changtong Hao
Nigel Sousou
Daniel Eikel
Jack Henion
Thin-layer chromatography (TLC) is a planar chromatographic technique used to separate the components of a mixture by employing a thin stationary phase supported by an inert backing. It can be ...
Read More
Theory and Practical Applications of Automation Solutions in Analytical Measurements
Wednesday, July 24, 2019
Heidi Fleischer
Kerstin Thurow
Automated systems for sample preparation and analytical measurements must follow special protocols due to their complex process structure with multiple subprocesses.
Read More
The Importance of Monodisperse Silica in the Evolution of UHPLC and HPLC Column Performance
Tuesday, March 10, 2015
Richard A. Henry
Paul Ross
William R. Betz
Gaurang Parmar
Wayne K. Way
There is growing interest in the use of monodisperse particle-size distribution or PSD (here defined as having 10% RSD or less) to prepare modern HPLC columns because good correlation has been ...
Read More
Statistics in the Laboratory: A New American Laboratory Column
Friday, September 25, 2015
Stanley N. Deming
Welcome to “Statistics in the Laboratory.” This column will appear four times a year and will build on the popular “Statistics in Analytical Chemistry” series by David Coleman and Lynn Vanatta ...
Read More
Statistics in the Laboratory: Control Charts, Part 1
Tuesday, January 26, 2016
Stanley N. Deming
Statistical process control (SPC) charts were introduced briefly in the previous column (October 2015).
Read More
Statistics in the Laboratory: The Limit of Quantitation
Thursday, January 18, 2018
Stanley N. Deming
In the two previous columns, we discussed the limit of detection LD, the minimum signal strength above which we can state with at least a given level of confidence (e.g., =99.95%) that analyte is ...
Read More
Statistics in the Laboratory: Mandel Sensitivity
Wednesday, March 28, 2018
Stanley N. Deming
In the three previous columns, we discussed the limit of detection amount LDA, the minimum consistently detectable amount MCDA, and the limit of quantitation amount LQA.
Read More
Statistics in the Laboratory: The Capability of a Measurement Process
Tuesday, September 27, 2016
Stanley N. Deming
Measurement processes must be fit for use. In this column, we’ll develop some quantitative statistical descriptors of the capability of a measurement process to be valid for its intended purpose.
Read More
Statistics in the Laboratory: The Limit of Detection
Wednesday, June 07, 2017
Stanley N. Deming
The phrase “limit of detection” sounds so simple, yet it leads to one of the biggest, murkiest, most frustrating swamps in the statistical literature.
Read More
Statistics in the Laboratory: The Minimum Consistently Detectable Amount
Tuesday, September 05, 2017
Stanley N. Deming
In the previous column we discussed the limit of detection LD, the minimum signal strength above which we can be confident that analyte is present, but with a small false positive risk a that analyte ...
Read More
Solving Glass-Cleaning Challenges in Short-Path Distillation of Cannabis Oils
Wednesday, December 19, 2018
Robert Sandor
Brian Maltais
Ultrasonic cleaning replaces potentially dangerous caustic or solvent baths and the associated disposal challenges.
Read More
Selecting a GC Inlet Liner
Tuesday, July 26, 2016
Linx Waclaski
Introduction of gas chromatography samples typically occurs through a heated inlet containing a glass liner.
Read More
Routine Maintenance in ICP-MS: Critical When Monitoring Elemental Impurities in Pharmaceuticals
Tuesday, May 01, 2018
Robert Thomas
Routine maintenance is critical in ICP-MS, and this article provides guidance on keeping the sample introduction clean.
Read More
Response Scene Chemical Confirmation with GC/MS
Friday, August 24, 2018
Philip Tackett
This article discusses a real-life scenario in which a person-portable GC/MS was used for on-site identification of an unknown substance that caused an adverse reaction.
Read More
Reducing Microplate Result Variability Using an AI-Based Approach
Tuesday, August 07, 2018
Paul Hensley
Artificial intelligence-based analysis of individual well patterns is a powerful tool with the potential to reduce the effect on assay variability due to surface chemicals.
Read More
Recent Advances in ICP Spectrometers
Monday, September 28, 2015
Mark Grey
When SPECTRO Analytical Instruments (Kleve, Germany) sought to redesign its inductively coupled plasma (ICP) spectrometer instrument line, the company’s engineers worked to address some very specific ...
Read More
Rapid Characterization of Large Areas of Graphene Using Raman Spectroscopy
Thursday, August 29, 2013
Tim Batten
Raman spectroscopy probes the vibrations (phonons) in a material. These phonons are characteristic of a given material and allow its chemical and structural properties to be investigated.
Read More
Page
<<
<
1
2
3
4
>
>>
Product Guide
Analytical Instruments
Chemical Analysis Equipment
Chromatography
Clinical Diagnostics
Environmental Test Equipment
Food Testing Equipment
Forensic Laboratory Equipment
General Laboratory Equipment
Laboratory Supplies
Lasers and Optical Components
Life Science Research
Mass Spectrometry
Materials Research
Microscopy
Petroleum Testing Equipment
Pharmaceutical Lab Equipment
Spectroscopy
Test and Measurement
more products from labcompare »
Most Recent Articles
Reducing Toxic Chemical Vapors in the Lab and the Basics of Proper Chemical Waste Storage
Friday, May 05, 2023
A Make-it-or-Break-it Decision – Plastic vs. Glass Labware
Friday, April 28, 2023
The Do's and Don'ts of Laboratory Balances
Friday, April 14, 2023
Pittcon 2023: PFAS, AI, LC, MS and Batteries
Tuesday, April 04, 2023
Supporting Sustainability in Analytical Labs by Switching from Helium to Hydrogen
Tuesday, March 28, 2023