Merck KGaA, Darmstadt, Germany products

Prove 100: Smart VIS Spectrophotometer for Routine Applications. Spectroquant® Prove 100 is a highly capable yet economical VIS spectrophotometer developed for fast, easy and secure use in routine applications such as waste water testing. It allows direct insertion of cell tests and is preprogrammed for our broad range of Spectroquant® cell test kits. Just add the waste water sample, insert the cell and read the results.

Prove 300: Robust UV/VIS Spectrophotometer for Sensitive Measurements. Spectroquant® Prove 300 is an incredibly robust UV/VIS spectrophotometer, optimized for sensitive measurements such as the analysis of drinking water and beverages. Programmed for over 180 reagent tests and free methods, capable of both UV and VIS measurements, and equipped with a long-lasting xenon lamp, Prove 300 is the ideal tool for rapid, reliable results.

A Stable RP Stationary Phase, Optimized for Applications up to pH12. Merck’s Aluspher® RP-select B HPLC column is an alkali-stable reversed-phase stationary phase designed for the chromatographic separation of neutral, basic and acidic compounds under neutral conditions. Due to its stability in the pH range of 2-12, Aluspher® RP-select B allows the use of basic eluents, such as NaOH. This suppresses the ionization of basic compounds, and thus avoids peak tailing. Furthermore, advanced formulation technology has enabled the production of spherical alumina particles as a base for Aluspher® 100 RP-select B. The combination of alumina with alkaline eluents has led to new applications in HPLC.

Superspher® columns are specially designed for highly efficient HPLC separations. According to both theoretical calculation and practical experience, these high performance spherical silica carriers, with a mean particle size of 4 μm, provide an optimum pressure to separation performance ratio. The number of theoretical plates for Superspher® HPLC columns is > 100,000 N/. This makes them the ideal choice for complex sample mixtures that require high peak capacity.

SupraSolv® solvents from Merck are developed specially for sample preparation in gas chromatography. Ideally suited for all GC applications including sensitive detection tasks in residue and environmental analysis, SupraSolv® solvents offer you the security and reliability needed for today’s gas chromatography applications. No matter if you use ECD, FID or MS – our comprehensive portfolio of GC solvents offers a dedicated product quality for your specific application and detection method. Our SupraSolv® ECD and FID quality is specially developed and tested for ECD (Electron Capture Detector) and FID (Flame Ionization Detector). Typical applications include the determination of polychlorinated biphenyls (PCB) in water and soil or pesticides in fruits and vegetables.

For analysis by gas chromatography, many samples, such as readily decomposed substances or those with low volatility, can only be investigated after their conversion to stable, volatile derivatives. Besides increasing sample volatility, derivatization reactions also improve the sensitivity of detection and enhance detectibility. Merck offers a high-quality range of acylating, alkylating and silylating derivatization reagents, as well as several ancillary reagents. The following table provides an overview of the application fields of our derivatization reagents.

With Certipur® AAS standards from Merck, you benefit from both a comprehensive portfolio and top quality for highest precision. All our AAS standards are traceable to standard reference materials from NIST. Merck offers AAS standards for a wide range of elements and ensures their accuracy and purity through strict quality control procedures. Quality management for Certipur® AAS standards is carried out using ICP-OES by our own calibration laboratory in Darmstadt, Germany, that has been accredited according to DIN EN ISO/ IEC 17025. Merck AAS standards come with an extensive, batch-specific Certificate of Analysis documenting data on the certified value, measurement uncertainty, composition, traceability, date of release and minimum shelf life.

As your one-stop provider for instrumental analysis via Atomic Absorption Spectroscopy (AAS), we offer a comprehensive choice of reagents for use in sample preparation as well as in calibration. Our portfolio of auxiliary reagents for optimizing analysis conditions comprises selected matrix modifiers and spectroscopic buffers for AAS measurements. Sample preparation is always a critical step in atomic spectroscopy analyses. In AAS applications, the reagents used for sample preparation must be very pure in order to make sure to reliably determine the trace elements you are analyzing for. To ensure that the measurement isn’t affected by interference it is recommended to use matrix modifier and spectroscopic buffer. Both reagents are available in a small range of elements or in different composition to suppress the interference.

New RQflex® 20 reflectometer: Mobile accuracy with test strips Take your lab to the sample with the compact and easy-to-use RQflex® 20 reflectometer. Portable Analysis: A light and compact system that acts like a mobile laboratory to perform critical analyses and obtain quantitative results directly on-site. Get results in minutes for easy monitoring of your materials at any stage of your process. Monitor the raw materials you use in all stages of your production processes, for example, in agriculture or water analysis, hygiene monitoring, and industrial analysis to ensure high quality throughout. This handy mobile laboratory enables you to run the decisive analyses directly on the spot in a highly cost-efficient manner. The system rapidly and simply provides you with all the information you need about the nutrient status of the plant. This enables timely action to be taken when required to rebalance the nutrients used and to control the optimum use of expensive fertilizers.