Analyze This
Discover our blog on the Metrohm website
Metrohm Discover: A new platform From now on, new «Analyze This» posts will only be featured on the Metrohm website rather than WordPress. We invite you to come check out our articles on the Metrohm Discover platform, where you will find all kinds of helpful material...
Best practice for separation columns in ion chromatography (IC) – Part 3
This is the third and final post in our series providing you with tips and tricks on the proper use of ion chromatography columns. In the first part, we mostly discussed the standard operation conditions as well as operational limits for columns, while in the...
NIR spectroscopy: a 21 CFR Part 11 compliant tool for QC and product screening
Pharmacology: a brief history Our search for medicines is nearly as old as humanity itself. Medicinal ingredients from plant, mineral, and animal sources were used for healing purposes since the earliest of advanced civilizations. Herbal remedies from China date back...
Ion-selective electrodes: General tips – Part 1
Ions – we encounter these tiny charge carriers constantly. Depending on the concentration of certain anions (negative ions) and cations (positive ions), they can have a significant impact on humans and the environment. Thanks to ongoing quality control in several...
Five myths about online dispersive NIR spectroscopy, FT-NIR, and FT-IR – Part 1
Spectroscopy is not just spectroscopy—or is it?When talking with our project partners and customers, the topic of near-infrared (NIR) spectroscopy is often automatically associated with FT-NIR spectroscopy. So, why isn't it just called NIR? What is the difference...
NIR spectroscopy in the petrochemical and refinery industry: The ASTM compliant tool for QC and product screening – Part 5
History of ASTM International The American Society for Testing and Materials (ASTM) is an organization that currently provides over 12,500 international standards. Its roots date back to 1898, when ASTM was formed by a group of scientists and engineers to address the...
USP <645> – simple automated analysis of ultrapure water
H2O – two simple elements, oxygen (O) and hydrogen (H), fuse together to form one of the most important molecules in the world: water. Water is everywhere on Earth and it is vital for our health and survival. It often contains other ions like calcium, magnesium, and...
NIR spectroscopy in the petrochemical and refinery industry: The ASTM compliant tool for QC and product screening – Part 4
What is a lubricant? A lubricant is defined as a petroleum-derived product used to control and reduce the friction and wear of moving machinery parts (e.g., in engines and turbines). The main purpose of lubricants is to help protect and prolong the lifetime of...
Side reactions in Karl Fischer titration
Many chemists that utilize Karl Fischer titration are nervous about the presence of side reactions because they know that the water determination in their samples can only be specific without any side reactions. Other KFT users do not know what the possible side...
Ph. Eur. 2.2.48 Raman Spectroscopy: How Raman instruments from Metrohm comply with the 2022 update
The European Pharmacopoeia (Ph. Eur.) is a single reference work for the quality control of medicines. Ph. Eur. contains norms, suggests analytical methods, and lists many properties that define quality control (QC) during the production of medicines, the raw...