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New QuEChERS Performance Standards Kit
Sourcing individual pesticide standards and preparing working standards is expensive and time-consuming. Food safety laboratories can simplify standard preparation and better ensure data quality by using Restek’s new QuEChERS performance standards kit for initial method evaluation and ongoing performance validation. The QuEChERS performance standards kit was specifi cally designed to provide low-cost ‘entry level’ mixes for food safety and contract laboratories that want to evaluate the QuEChERS extraction approach (e.g., EN 15662 and AOAC 2007.1) for determining pesticides in fruits and vegetables with GC and LC instrumental methods.
A QuEChERS performance standards kit is ideal for broad class work because it provides a wide range of commonly used organochlorine, organonitrogen, organophosphorus, and carbamate fungicides and insecticides, while still keeping the total number of analytes to a reasonable level. Volatile, polar, active, base-sensitive, and nonvolatile compounds are included to allow comprehensive evaluation of QuEChERS extraction and cleanup effi ciencies, and optimisation of GC and LC instrumental conditions.
These multiresidue pesticide standards are precisely formulated to ensure accuracy, and analytes are segregated into mixes based on chemical compatibility for maximum storage stability. Quantitative analysis confi rms the composition of each mixture, and documentation for each lot is provided. Restek® QuEChERS performance standards are produced and tested in accordance with ISO Guide 34 and 17025 accreditation.
Restek offers complete solutions for labs running QuEChERS methods. Visit
www.restek.com /quechers for addtional QuEChERS reference materials, QuEChERS extraction salts, QuEChERS dispersive SPE cleanup tubes, GC and LC columns and accessories.
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Albasure Sensitivity Controls for Routine Compatibility and Antibody Screening Testing
Quality control in the Blood Sciences laboratory is critical. The ALBAcheck® line of Blood Group Serology (BGS) control reagents, manufactured by Quotient and available in the UK from Alpha Laboratories, enables users to validate and control testing on an individual or batch basis. The range includes products suitable for sensitivity control of antibody testing platforms.
Routine compatibility testing and antibody screening have advanced with the introduction of fully automated test systems. It is essential to regularly monitor the performance of these platforms to ensure capability for detection of weak irregular antibodies. As part of the ALBAcheck®- BGS range, Quotient has specially formulated weak sensitivity controls, designed to stress testing platforms.
The ALBAcheck® BGS Albasure Sensitivity Control Kits are a combination of Anti-K,-c,-E,-S to stress the testing platform and provide greater confi dence in testing. Anti-S is included as a post decontamination check to ensure cleaning solutions have been removed. The kits can be used in column agglutination test systems. Two specifi cities are available as described in the UKBTS guidelines and demonstrate the ability to detect weak antibodies (Anti-c, -Fya,) of different blood group specifi cities. The kits give weak reactions and allow compliance with current blood typing control guidelines.
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