The Fused-Core® technology behind our Ascentis® Express columns delivers maximum speed and efficiency on both UHPLC and HPLC systems. Fused-Core® particles provide a much shorter diffusion path compared to totally porous particles, minimizing peak broadening. This result in very high efficiencies, which are typically 40% higher in comparison to fully porous particles of the same size. Ascentis® Express column are available with 2, 2.7 and 5μm particles and with a very broad range of column chemistries.

Merck for the pharmaceutical industry
In this page, you will find Analytical Application Notes for Pharma industry to help you find the right tool in a wide range of techniques.
These Merck application notes contain all the relevant technical information you need to perform and succeed in your method.
All these application notes can be easily downloaded as a pdf file.
- R&D
- Quality control
- Environment
- Production
- General
R&D
Ascentis® Express UHPLC and HPLC columns
BIOshell™ UHPLC and HPLC columns
BIOshell™ UHPLC and HPLC columns deliver maximum speed and efficiency for the separation of biomolecules on both UHPLC and HPLC systems. The Fused-CoreR superficially porous silica particles (SPP) with pore sizes from 90 A up to 1000 A allows superior separation of glycans as well as very large proteins. In particular, a pore size of 1000 A shows very clear advantages over common 300 A pores for the separation of very large proteins in biotherapeutic drug development such as monoclonal antibodies (mAbs) or proteins with molecular weights greater than 100 kDa.
Purospher® STAR HPLC and UHPLC columns
Analytical methods for pharmaceutical samples have to follow strong regulations. PurospherR STAR RP-18 endcapped columns are perfectly suitable for this demand and are the best choice for L1 columns listed in the USP (United States Pharmacopeia).
GC columns
Merck knows that only the most accurate analytical products will do. That’s why we offer the Supelco portfolio of analytical GC columns, providing you the accuracy, precision and consistency you need.
Chromolith® WP300 columns for bio applications
The new Chromolith® WP300 columns are designed specifically for bio applications. Wide pore (WP) 300A monolithic silica columns are made of a single continuous bed- rod of high purity porous silica that is then bonded with C18, C8 and C4. Protein benefits of preparative columns:
- High biorecovery and special selectivities for biomolecules
- High speed separation possible
- Substantially longer column lifetime
- High resistance to column blockage
- Cost savings from higher sample throughput and column durability
Chromolith®HR columns with high resolution
LiChrosolv® solvents
Solvents in gas chromatography and LC-MS
Quality control
Pharmaceutical Secondary Standards
Merck´s Secondary Pharmaceutical Standards are certified under double accreditation to ISO/IEC 17025 and ISO Guide 34 and are multi-traceable to reference standards from various Pharmacopeial organizations such as USP, PhEUR, and BP.
NEW UHPLC-MS LiChrosolv® solvents
For your highly sensitive UHPLC-MS analyses, how can you reduce noise and additional signals to a minimum? Merck’s new high-end UHPLC-MS solvents raise the standard for low baseline noise and clean mass spectra. The new range of advanced UHPLC-MS LiChrosolv® solvents have been developed to exceed all expectations, providing rapid and reliable results in both ESI/APCI positive and negative ionization modes.
LiChropur® additives and Lichropur® Reagents for Ion-Pair Chromatography
To help you obtain the highest quality analysis, Merck offers a wide range of high purity mobile phase additives for LC-MS applications. The LC-MS portfolio includes the most commonly used acids, bases and volatile salts of high purity tested for LC-MS applications.
Certipur® buffer solutions
With certified pH values at both 20 °C and 25 °C, Certipur® pH buffer solutions from Supelco® analytical products meet your calibration needs. Compliance, always ensured.
Certified Reference Materials
As the only manufacturer of analytical standards and Certified Reference Materials (CRMs) with a global presence, Merck provides the scientific community with a comprehensive portfolio and trusted brands. High quality Reference Materials are available only from organizations with a robust quality system. Double Accreditation to ISO/IEC 17025 and ISO Guide 342 represents the pinnacle of quality system achievement and allows the credible production and testing of CRMs.
Certipur® buffer solutions
With certified pH values at both 20 °C and 25 °C, Certipur® pH buffer solutions from Supelco® analytical products meet your calibration needs. Compliance, always ensured.
MAS-100 NT® - air samplers
EMSURE® acids, salts and solvents

EMSURE® acids, salts and solvents offer you:
- Accuracy and reliability – every time
- Convenience and safety
- Regulatory compliance (ISO 6353, ACS, Reag. Ph. Eur.)
They are tested for up to 70 parameters in Merck’s stringent quality control lab in Darmstadt, Germany.
Discover, for example, product specifications of acetic acid, Reag. Ph. Eur. analytical reagent
The specifications include over 50 parameters, far more than the amount of parameters
required for Ph. Eur.
Aquastar™ reliable water determination
Certipur® , ICP multi-element standards
Environment
Production
Prepsolv® solvents for preparative chromatography
Merck Prepsolv® solvents are tailored to facilitate scale-up from analytical to preparative separations and are manufactured taking into account the special requirements of preparative chromatography. They are characterized by an extremely low evaporation residue (< 1 mg/l) and low water content. The solvent quality ensures optimal product yield and column protection. The extensive range of withdrawal systems ensures the solvents can always be safely and easily used without any risk of contamination.
High quality TSB
MSYNTH®plus for organic synthesis
General
Acids in Safebreak bottles
Extran®
Chemizorb®
Milli-Q® IQ7000 purification system
Merck Application Notes for Pharmaceuticals companies
Chromatography
- Impact of mobile phase additives on LC-MS sensitivity Demonstrated using spice cannabinoids
- Comparison of Supel™ BioSPME 96-Pin Device to Rapid Equilibrium Dialysis Technique for Determination of Plasma Protein Binding
- HPLC Analysis of Dehydroascorbic Acid and Ascorbic Acid (Vitamin_C) on SeQuant ZIC HILIC
- HPLC Analysis of Pain Relievers on Ascentis Express
- HPLC Tips and Tricks-Mobile Phase Preparation
- HPTLC Application for Passiflora incarnata
- Identification, Assay and Organic Impuritiy Profiling Methods for Aripiprazole following the USP Monograph
- LC MS Analysis of Sorbitol and Mannitol on SeQuant ZIC HILIC
- Peptide Mapping Analysis Workflow for Adalimumab
- Sample Preparation of Serum Prior to Determination of Free Testosterone
- TLC Identification Test for Dextromethorphan following European Pharmacopeia Monograph on Silica
- UHPLC-MS Analysis of Released N-Glycans from Human IgG on a Supel™ Carbon LC Column
- UHPLC-MS Bottom-Up Analysis of Trastuzumab on a BIOshell™A160 Peptide C18 Column
- Workflow for the Analysis of Polysorbate 80 in Erbitux® Formulation
- CHROM HPLC Analysis of Letrozole and its impurities
- Determination of Ephedrine HCl and Pseudoephedrine HCl
- Determination of Ruthin in Anti-Aging Skin Cream Formulation Using Chromolit
- Fast Analysis of Monoclonal Antibodies Using Silica Monoliths Designed for Bioanalysis



