Correct identification of mineral phases in rock thin sections is essential to petrographic and petrologic analysis of rocks. Portable Raman coupled to an optical microscope gives chemical information along with the optical images to give a higher certainty of identification than traditionally used optical micropcopy alone. Correct identification of mineral...Read More

Chemical plant operators can reduce costs and minimize the impact on the environment using NIR and RAMAN. Lean manufacturing of polyurethane, assisted by near-infrared (NIR) and Raman spectroscopy Chemical manufacturing such as polyurethane production is characterized by a cost intensive production process combined with a negative ecological impact. These adverse...Read More

In this work, time resolved Raman spectroelectrochemistry measurements with screen printed electrodes are shown.  The instrument used combines in a totally integrated box: a 785 nm laser source, a high resolution Raman spectrometer and a bipotentiostat/galvanostat. Experiments are controlled with an excellent spectroelectrochemical software which allows real time data collection...Read More

Metrohm White Paper: The Mira P is shown to accurately verify the identities of 16 fats and oils 100% of the time using a confidence level of 95%. Included in this report are suggestions for creating and editing the training sets used in the verification method. Edible oils comprise a...Read More

This white paper describes how Vis-NIR spectroscopy improves testing procedures for various analyses during the formulation and production of paint and coatings in an economic and ecological way. More strict regulations paired with more complex products have increased testing complexity in the paint and coating industry. Therefore, producers ask for...Read More

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...Read More

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...Read More

Neutralization of charged particles by adding a buffer or by adding long-chained molecules - Factors such as energy input and size reduction principle make ball mills the best choice for the production of nanoparticles.Read More

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...Read More

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...Read More

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...Read More

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...Read More