Laboratory Reagent Articles on Environmental XPRT

o-Phthalaldehyde Reagent

Introduction Primary amines form highly fluorescent adducts when reacted with o-Phthalaldehyde (OPA) and a mercaptan under basic conditions. At a pH>9 and ambient temperature, reaction is generally complete within 30 seconds. The products of this reaction, 1-alkyl-2-alkylthio-substituted isoindoles, exhibit optimal excitation at 330 nm and maximal emission at 465 nm. The reagents ...

Jun. 10, 2010

By Pickering Laboratories, Inc.

Non toxic reagents for SEIBOLD online-analyser for heavy metals

Reagents and chemistry used with SEIBOLD COMPOSER Analysers are free from toxic compounds. Our "Green Thumb" project started in 2006 and delivered its first products in 2008. In 2011 the complete range of SEIBOLD COMPOSER Analyser for Heavy Metals has been introduced to the market. SEIBOLD's Analyser series COMPOSER is based on spectrophotometric technology. Measured concentration is a function ...

Apr. 20, 2012

By SEIBOLD Wasser - Analysatorenfabrik GmbH

Vector Laboratories - Small Business Scheme - Case Study

Operating in a competitive market dominated by larger companies, Vector Laboratories aims to 'punch above its weight’ and increase its market share. Central to this drive is their quality management system which has been certified to ISO 9001 since 2002. 1. QMS Implementation ...

Jun. 23, 2014

By LRQA Limited

Laboratory Management - Integrated Sampling the Key to Safe Water Supply

Leading water suppliers use Laboratory Information Management Systems (LIMS) to integrate the sample collection and analysis process, helping to maximize the efficiency of these programs. Drinking water suppliers around the world face unique challenges: They must deliver the most essential ingredient for life on a grand scale, while also navigating complex issues surrounding public safety, ...

May 1, 2013

By Thermo Fisher Scientific, LIMS & Laboratory Software

The productive environmental laboratory: BSK Labs boosts efficiency with Metrohm IC

BSK Labs runs a number of environmental laboratories and service centers along the west coast of the US. A total of 70 employees – including microbiologists, chemists, lab technicians, and support staff – make sure that the 200 to 350 samples that come in every week are analyzed. BSK Labs specializes in potable water chemistry, ground water monitoring, storm water runoff, solid waste ...

Nov. 16, 2016

By Metrohm AG

Quantitative application for OP/carbamate screen

I. PURPOSE - The purpose of this document is to detail the standard operating procedure for the screening of cholinesterase inhibiting carbamate insecticides in fruits, vegetables, and feeds using the SDI Food Prep Kit and InQuest OP/Carbamate Screening Kit. NB - This is a screening technique designed to determine presence or absence of cholinesterase inhibiting ...

Jun. 15, 2010

Dehalogenation

Introduction: Contaminated soil is screened, processed with a crusher and pug mill, and mixed with reagents. The mixture is heated in a reactor. The dehalogenation process is achieved by either the replacement of the halogen molecules or the decomposition and partial volatilization of the contaminants. Base-catalyzed Decomposition (BCD) Base-catalyzed ...

Oct. 1, 1997

By Federal Remediation Technologies Roundtable

Comparison of the CMVX-7100 Micro-Volume Workstation

Comparison of the CETAC MVX-7100 Micro-Volume Workstation with an Established Laboratory Method for the Assessment of Lead, Mercury, and Arsenic in Human Whole Blood. Conventional autosamplers used in clinical ICP-MS are largely based on the needs of non-clinical environments. Their disadvantages are numerous and include high ...

Aug. 18, 2015

By Teledyne CETAC Technologies

Amino acid analysis matrix independent analysis of free amino acids

Pickering Laboratories specializes in manufacturing of cationexchange columns and eluants for amino acid analysis. No other techniques have been shown to match the reproducibility and sensitivity of this post-column methodology. Advantages of this method, such as absence of matrix interferences, are especially important in analysis of native samples. Pickering provides several options for the ...

Jun. 10, 2010

By Pickering Laboratories, Inc.

Discrete or Continuous Flow Analysis – which is better?

A wide variety of factors affect the choice of analytical instrument. These include target workload (samples/hour), variety of chemistries, methods required, bench space, staff availability etc. In the following article Lalicia Potter, Technical Sales & Support Director at SEAL Analytical, examines one of the common decisions facing laboratory managers. As the manufacturer of an ...

Jan. 13, 2014

By SEAL Analytical Inc. - a Porvair company brand

Pinnacle PCX Carbamate Testing at Nebraska Health

Beta Site Evaluation of the EPA Carbamate in Drinking Water Method 531.1 with Pickering Laboratories Pinnacle PCX Integrated LC/Post-Column Derivatization Instrument. The Nebraska DHHS Public Health Environmental Laboratory conducts environmental testing for the state of Nebraska. It employs mandated U.S. Environmental Protection Agency (EPA) methods for the determination of regulated substances ...

Jul. 13, 2007

By Pickering Laboratories, Inc.

Analysis of Formaldehyde simple and sensitive method for analyzing free formaldehyde

Formaldehyde is used for disinfections of industrially manufactured products. However, it is detrimental to health and its potential oncogenicity led to the current utilization of a formaldehyde donor for long-term preservation. Such donors are in hydrolytic equilibrium with formaldehyde producing free formaldehyde on exposure to moisture. This method is used to quantify the free formaldehyde ...

Jun. 10, 2010

By Pickering Laboratories, Inc.

Polyether antibiotics monensin, narasin, & salinomycin

Polyether antibiotics, such as Monensin, Narasin, and Salinomycin, in raw material, premix, liquid supplements, and final feeds, are best quantified using a high-performance liquid chromatograph equipped with a post-column reactor. The polyether antibiotics react, post-column, with Vanillin in the presence of Sulfuric acid, and the resulting products can be detected at 520 nm. However, this ...

Jun. 10, 2010

By Pickering Laboratories, Inc.

Introducing a New ASTM Method for the Determination of Total Nitrogen, and TKN by Calculation, in Water Samples

The USEPA Clean Water Act (CWA) requires national approval for all methods used for CWA compliance. There are approved methods for the determination of inorganic nitrogen (NO3-N, NO2-N, and NH3-N), and for organic nitrogen (TKN – NH3-N)2. There are no EPA approved methods for the determination of total nitrogen although it is a required parameter in many USEPA permits, including monitoring ...

Apr. 5, 2017

By Shimadzu Scientific Instruments Inc

BM-T respirometry study about the adaptation of a potential toxic industrial wastewater to an specific activated sludge case study

Enterprise: CELANESE CHEMICALS IBÉRICA, S.A. (Tarragona – Spain) Premier materials for painting industry Celanese enterprise, before the SURCIS study, in several laboratories had already tried several analysis of its industrial wastewater in order to find out if it could be certain degree of toxicity when wastewater will be treated with activated ...

Nov. 19, 2014

By SURCIS, S.L.

In Situ Solidification/Stabilization

Introduction Solidification/stabilization (S/S) reduces the mobility of hazardous substances and contaminants in the environment through both physical and chemical means. Unlike other remedial technologies, S/S seeks to trap or immobilize contaminants within their 'host' medium (i.e., the soil, sand, and/or building materials that contain them), instead of removing them through chemical or ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

When Consumables Kits are Greater Than the Sum of their Parts

ProteinWorks and GlycoWorks kits address more than sample prep challenges One of the most challenging parts of an LC-MS workflow happens before analytical chemists even turn to their instrument: Sample preparation. Get it right, and the analytical run performs as expected. Get it wrong, and the assay has any number of problems, from poor sensitivity to poor reproducibility. The ...

Mar. 7, 2016

By Waters Corporation

New Automation Guide for Improved Titration Workflows

Find valuable tips and tricks on how to optimize your titration workflows in the new METTLER TOLEDO Automation Guide. Download the Titration Automation Guide today and learn how titration processes can be automated for highest efficiency and security in the laboratory. Modern laboratories look into automation to address the demands for high throughput and variety of samples and workflows. ...

Jul. 7, 2016

By Mettler - Toledo Int. Inc

PlumeStop Colloidal Biomatrix White Paper

Securing rapid contaminant reduction and accelerated bioremediation using a dispersive injectable reagent Executive Summary PlumeStop Colloidal Biomatrix (PlumeStop) represents a new (patent pending) technology innovation designed to address the challenges of excessive time and end‐point uncertainty in groundwater bioremediation. The technology secures rapid ...

Nov. 26, 2014

By REGENESIS

Bromate analysis analysis of bromate in drinking water by hplc and post-column derivatization

Bromate is a disinfection by-product that is formed when Ozone reacts with naturally occurring Bromide in drinking water. Bromate is a known animal carcinogen and has also been listed as a group 2B toxin: probable human carcinogen. The U.S. EPA Method 300.1 employs conductivity as the means of detection which works well for most anions. However, the method is nonspecific and coeluting ...

Jun. 10, 2010

By Pickering Laboratories, Inc.

Subscribe to our eBulletins

Add Supplier Profile