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•	Atomic Absorption Spectroscopy
•	ICP/ICP-MS
•	Infra Red Spectroscopy
•	Reference Standards
•	Sample Preparation
•	UV-VIS
•	XRay Fluorescence

The Trace Analysis Catalogue from Merck Eurolab is now available featuring over 100 pages of specialist apparatus and reagents with separate sections on individual analytical techniques including XRF, HPLC, GC, IC, ICP, AA and spectrophotometry.

As a scientist this invaluable reference source will help you choose from an extensive range of high quality standards, solvents and sample preparation reagents allowing you to carry out trace determinations with confidence of traceability, consistency and accuracy.

For your free catalogue please contact us by email sales@advtechind.com

Atomic absorption spectroscopy is one of the most widely used and established techniques for elemental analysis. Calibration with reliable standards of known analyte concentration is integral to the success of the analysis. The SpectrosoL range comprises over 40 different element standards in 1,000 ppm and 10,000 ppm concentration ranges.

Full Certificates of Analysis are supplied with all standards to give you the utmost confidence in calibrating and standardising your instrument. The standards are complimented by a full range of ionisation buffers, release agents and reagents for the determination of mercury and metallic hydrides under the trusted SpectrosoL label.
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ICP - Standards

With the latest technological advances in analytical inorganic instrumentation, the need for high quality calibration standards of the highest purity has increased. BDH supplies a comprehensive range of analytical standards for inorganic analysis which satisfy these stringent demands.

The range includes ICP single element standards, ICP multi-element standards and Quality Control standards.

The highest grade starting materials available (typically 99.999% purity), 18 megohm water and high purity acids are used to prepare every standard.

Class A volumetric glassware is used exclusively and our analytical balances are calibrated routinely according to NIST protocols. The standards are packaged in bottles that have been acid bleached and rinsed with copious amounts of 18 megohm water to insure the integrity of our final product.

Standard concentrations for the single elements are usually determined by wet chemical analysis (gravimetric/titrimetric) as well as verified instrumentally against the appropriate NIST Standard Reference Material. The accuracy of the actual lot analysis is +/- 0.5% of the stated value on the label. A Certificate of Analysis is provided for each ICP standard stating the actual concentration of the final solution, the traceability to NIST, the expiration date and the trace impurities detected.

ICP-MS Standards

With increasing emphasis placed on accuracy, repeatability and detection of low level analytes; the technique of ICP-MS has migrated from research to everyday analysis. The standards are produced purified acids and 18 megohm water, packed in Teflon bottles to protect and guarantee the integrity of your standard.

You can choose from over 50 standards; 10,000ppm, 1,000ppm concentrations, 100ml, 500ml pack sizes; tuning, calibration, memory and interference check solutions; single and multi-element standards. Each is traceable to NIST where possible and has a free Certificate of Analysis and free delivery, representing true value for money.

Listening to your comments we have built in features to help you save time and money. Each single component standard has its cap labelled preventing caps being accidentally swapped and contamination occurring, when making up your multi-element standards. Each label states the product catalogue number for easier re-ordering, expiry date and convenient space to write in date opened and date received for GLP.

For sample preparation reagents Merck Ultrapur and BDH ARISTAR reagents are ideal.

For further information of these products and supporting literature call us by email sales@advtechind.com
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Spectroscopic techniques like infrared demand materials that are IR transparent, over as wide a range as possible. BDH materials for infrared spectroscopy fulfil these requirements by purification and rigorous analytical control to produce products of the necessary high quality under the SpectrosoL^® brand.

Additionally, Merck offers a comprehensive range of products for IR from Alfa Aesar and Perkin Elmer.

•	Windows
•	Polishing Kits
•	Materials and Reagents
•	Liquid Sampling
•	NIR Cells
•	Sampling Accessories

For further information on these products and supporting literature call us email sales@advtechind.com
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When dealing with low levels of analytes the use of CRMs can prove invaluable to a laboratory. CRMs can be pure substances or matrix materials that can be used at different stages of the analytical cycle for sample preparation to final instrumental analysis. Using CRMs can control day to day quality, verify the correct application of the chosen method and calibrate the measurement process being used. New methods can also be validated as they are developed.

Adoption of the use of CRMs can reduce your costs through a reduction in repeat analysis. You will have increased confidence and your customers increased satisfaction, in your results. Potentially enhancing your reputation with third party regulatory bodies and customers.

•	CRM's from the Laboratory of the Government (LGC)
•	VKI Certified Reference Materials
•	BDH Organic Standards

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Analytical procedures frequently involve a number of complex steps. Very rarely can a sample be analysed directly. The pre-treatment or sample preparation steps are crucial to the analytical procedure, but are often overlooked in Trace Analysis.

The aims of sample preparation are to remove any interfering components in the sample, and to selectively enrich the analyte concentration to aid detection.

Merck Eurolab supplies a selection of high quality reagents and apparatus to aid in the sample preparation step. Full details of all products can be obtained from the Merck Eurolab on-line catalogue.

Analytical Balances

Merck Eurolab can offer a wide range of analytical balances. Please visit our Instrumental Analysis section for more details on balances.

Block Heaters

Grant Instruments have just launched the Prima range of block heaters.

These high quality heaters ensure your samples are at an accurately controlled temperature, and remain contamination free - ideal for applications where a water bath is not suitable.

There are two series, the UBD and the UBR, which have temperature ranges of ambient + 5°C to 130°C. Both have models that hold one, two or four blocks. They are a standard size enabling existing Grant blocks to be used in them.

For more information please email sales@advtechind.com
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Buffers

A full range of BDH materials are available for the preparation of common buffer systems, including tablets, capsules and concentrates, together with ready made solutions in bottle and sachet form.

Solid Phase Extraction (SPE)

Solid Phase Extraction is used to selectively extract components of interest from a complex sample or much larger solvent volume prior to analysis by HPLC, GC or TLC. Batch-to-batch consistency, fines blocking the frit and contamination from the SPE tube have major problems for this technique. Merck Eurolab has addressed all three problems with LiChrolut, a high quality range of SPE cartridges, loose sorbents and accessories.

Pesticide Residue Analysis

Analysis of pesticide residues in both food stuffs and water is of increasing importance as more is learnt about the food chain and the cumulative toxicity of pesticides to humans.

Analysis usually consists of extraction and clean-up followed by quantitative or qualitative analysis. When analysing for pesticide large volumes of reagent are used to extract the residues from the sample which are then concentrated down to reach levels which are instrumentally detectable. It is critical to ensure that these reagents have lower residue levels than those being detected in the sample. Suprasolv solvents have guaranteed low levels for water and no-volatile matter content. They are also examined by Gas Chromatography using ECD and PND, ensuring that the solvents conform to the specified low backgrounds.

Full details can be obtained from the Merck Eurolab on-line catalogue.

Reagents

Aristar - these reagents are designed to meet the exacting requirements of today's analyst. Each product is carefully produced and rigorously tested. With impurity levels down to the PPB range, these reagents are suitable for both biochemical and electronic applications and ideal for all aspects of trace analysis.

SpectrosoL - the sophistication of modern spectroscopic techniques demands solvents, reagents and standards of high and consistent purity. The 'SpectrosoL' range is specially purified and packaged for use in a variety of spectroscopic applications.

Ultrapur - this top quality range consists of four acids manufactured by sub boiling distillation to ensure that impurities are in the sub parts per billion range. Each acid is supplied in a Teflon PFA bottle and is delivered complete with a lot analysis certificate.

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Merck Eurolab's new range of UV-VIS standards are perfect for the validation of all UV-VIS spectrophotometers and have been manufactured in accordance with European pharmacopoeia and DAB10.

The range offers six standards for the accurate validation of absorbance, stray light, spectral resolution power and wavelength. Each standard is traceable to NIST and supplied complete with a certificate. These high quality standards are ready-to-use and packaged in a single-use ampoule with a 2 year guaranteed shelf-life which eliminates the need for expensive cells.

Each solution is only used once avoiding the risk of degradation and ensuring confidence in the results. In addition, there is no need for calibration which also cuts administration costs.

Please also see our Spectrophotometers and CRM (Change to Reference Standards) pages.

For further information about these products and supporting literature call us by email sales@advtechind.com
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Merck Eurolab supplies a comprehensive range of high quality consumables for XRF from Chemplex.

A brief summary of products is detailed below:

Thin Film Sample Supports

Thin film sample supports are used for retaining liquid, powdered, slurry or solid specimens in XRF sample cups for wavelength (WDXRF) and energy dispersive (EDXRF) spectrochemical analysis. The thin film support retains the specimen during the preparation and analysis stages, allow the maximum analyte-line transmittance and provide reproducible data.

Thin Film

Thin film, with a gas permeable membrane, has unique submicron-size passageways extending from one surface to the other. This permits gases and vapours to permeate and prohibits the penetration of sample particles. Intended to establish and maintain pressure equalisation within an XRF sample cup and instrument sample chamber. Available as a continuous roll or pre-cut circles. The thin film should be tested to determine its degradation resistance and its suitability for your sample. Properties to consider are chemical attack, irradiation, thermal softening, brittleness, preferred orientation, tearing and stretching. Always use a blank to minimise errors induced by trace contaminants contained within the film.

Sample Cups

Merck Eurolab offers a wide range of sample cups:

Trimless: Eliminates the need to trim extraneous thin film and speeds up sample preparation procedure; available in two types with the choice of diameter.

Resealable vent: Unique 'bead to-indent' geometry for taut film and leak resistant seals. Can be converted from a sealed into a vented cell.

Single open-ended: Flexible in use and applications, unique 'bead to-indent' geometry for taut film and leak resistant seals, with venting and micro sample mounting provision.The single open ended cups have an overflow reservoir for saving thermally sensitive sample solutions and venting is easily achieved via Snap-post.

Double open-ended: Unique 'bead to-indent' geometry for taut film and leak resistant seals, venting is achieved via microporous film or vented sample caps. These cups are suitable for high throughput of samples in air or Helium paths.

Pellet Cups

Pellet Cups are available in Aluminium and Plastic, a taper provides for sample expansion at gradient levels and rates - minimising displacement and segregation.

Fluxes

When analysing a material such as cement or other silica material it is common to convert the sample into a solid solution by fusion with a borate to produce a smooth and homogeneous glass. Merck Eurolab offers lithium and sodium borates in the Spectromelt® range to suit all your requirements for XRF:

•	Low loss on ignition
•	High density
•	Low level contaminants

For finely powdered samples pressing of tables is an alternative to fluxing. In most cases a stable tablet cannot be prepared without an additive. In all these cases the use of Hoechst Wax C Micro Powder is recommended.

Platinum Labware

The Merck Eurolab range includes platinum basins, platinum crucibles as well as zirconium crucibles (low cost alternative to platinum) with excellent chemical resistance.

For further information of these products and supporting literature call us sales@advtechind.com
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