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White Papers
White Paper: Surface Enhanced Raman Scattering (SERS) – Expanding the Limits of Conventional Raman Analysis

White Paper: Expanding the limits of conventional Raman analysis with SERS

The advantage of SERS for the analytical chemist lies in its ability to detect analyte concentrations of parts per million and even parts per billion levels, while classical Raman is limited to parts per thousand. Surface Enhanced Raman Scattering (SERS) – Expanding the limits of conventional Raman analysis Methods for...
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RETSCH: CryoMilling for protein analysis

CryoMilling for protein analysis

Proteins such as DNA and RNA are problematic to extract due to temperature sensitivity. That’s where the CryoMill comes in! The CryoMill is tailored for cryogenic grinding. The grinding jar is continually cooled with liquid nitrogen from the integrated cooling system before and during the grinding process. Thus the sample...
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Ultrafine Grinding with Laboratory Ball Mills

Ultrafine grinding with laboratory ball mills

Neutralization of charged particles by adding a buffer (electrostatic stabilization, left) or by adding long-chained molecules (steric stabilization, right) – Factors such as energy input and size reduction principle make ball mills the best choice for the production of nanoparticles. From 1 to 100 nm Nanotechnology is one of the...
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Which particle sizing technique should I use? A detailed look into the current techniques. Comparing sieve shaking, laser sizing and dynamic image analysis

Which particle sizing technique should I use?

Which particle sizing technique should I use? A detailed look into the current techniques. Comparing sieve shaking, laser sizing and dynamic image analysis   Sieve Analysis Sieve Analysis is traditional and widely used method of particle sizing particles between 20um and 125mm. Before laser sizing and dynamic Image analysis were...
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Surfactants Analysis and Pharmaceuticals

Surfactants analysis and pharmaceuticals

Which titration suits your requirements best? Surfactant analysis does not follow the standard titration application profile. Anionic surfactant, cation surfactant, non-ionic surfactant, dual-phase titration; each has it’s own intricacy and fine-tuning. It is enough to make your head spin. Where do you start for the best analysis method? How do...
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In situ SERS effect with screen-printed silver electrodes

In situ SERS effect with screen-printed silver electrodes

Metal screen-printed electrodes are promising, cost-effective SERS substrates. Metrohm Dropsens White Paper: In this white paper Alejandro Junquera Pérez, Pablo Fanjul Bolado, David Hernàndez Santos demonstrate the time resolved Raman spectroelectrochemistry measurements with screen-printed electrodes. The instrument used combines in a totally integrated box: a 785 nm laser source, a...
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High standards require the most accurate analysis

High standards require the most accurate analysis

High standards require the most accurate analysis.  That’s where DIA stands apart from other techniques! Higher resolution, better sensitivity, and excellent reproducibility: this is how Dynamic Image Analysis (DIA) improves the characterisation of powders and granulates in both quality control and R&D. This white paper outlines how particle size distribution...
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The productive environmental laboratory

The productive environmental laboratory

How much can you save with automated sample preparation? In an exclusive white paper, Brad Meadow reports how BSK Labs meets common challenges such as comprehensive sample preparation using automated inline techniques. Such techniques with automated Inline Ultrafiltration being the most important have helped BSK labs save more than USD 30,000...
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The art of milling, the importance of correct sampling and dividing

The Art of Milling: the importance of correct sampling and dividing

A faultless and comparable analysis is closely linked to an accurate sample handling. Only a sample representative of the initial material can provide meaningful analysis results. Rotating dividers and rotary tube dividers are an important means to ensure the representativeness of a sample and thus the reproducibility of the analysis....
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Corrosion testing and pipeline protection in petrochemistry

Corrosion testing and pipeline protection in petrochemistry

Corrosion – a universal problem Corrosion is one of the main issues petrochemical industry has to tackle. Corrosion degrades the mechanical properties of metal surfaces, lowering their performances. Pipelines, for example, are affected by corrosion induced by environment around them, such as oil, hot temperatures, seawater and microbes. It has...
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Electrochemistry in the quality control of food and beverage packaging

Electrochemistry in the quality control of food and beverage packaging

The shelf life of foods and beverages depends to a great extent on the packaging material. Metals are ideally suited for this purpose, as they can be coated with different passivating food-grade layers. Nethertheless, electrochemical measurements such as impedance spectroscopy (EIS) are required to monitor the integrity of the sealing...
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Flexible analysis for the pharmaceutical industry

Flexible analysis for the pharmaceutical industry

Recent advances in IC applications make it a must for pharmaceutical solutions. Pharmaceutical manufacturing and solution analysis has always been a stronghold of HPLC instrumentation. While HPLC is still the most common technique seen in pharmaceutical laboratories, Ion Chromatography, as a sub-section of liquid chromatography is becoming a very important...
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