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AAV Titer Determination
To determine the titer of adeno-associated viruses (AAV) we apply HPLC. If you are curious to learn more about this method and its...
ADCC Reporter Bioassay
Antibody-dependent cell-mediated cytotoxicity (ADCC) is a mechanism of cell-mediated immune response, initiated by specific...
Amino acid Analysis
With our amino acid measurement (order no. 103) free amino acids are measured, whereas with our total amino acid analysis (order no....
Ammonium Analysis
Assay for the determination of ammonium concentrations. The average LOQ is 0.1 mM and might vary depending on the matrix.
Analysis of Total Amino Acid Content
With our amino acid measurement (order no. 103) free amino acids are measured, whereas with our total amino acid analysis (order no....
Antibody Quantification
Our HPLC method for quantification of antibodies is based on protein A affinity chromatography. If you are unsure whether your...
Ascorbate Analysis
Quantitation of ascorbic acid (vitamin C) via a proprietary method by UHPLC-MS/MS.
Bioburden Testing
Determination of TAMC (total aerobic count) on TS-agar and for TYMC (total microbial count of yeasts) on SAB-agar is performed by...
Coulometric Karl-Fischer Titration
Determination of water content in solid and liquid samples using coulometric Karl-Fischer titration. Quantification range: 1 ppm -...
Culture Media Analysis Bundle
Spent media analysis is the analysis of the used media over the course of the production process and facilitates the selection of...
Customized Analytical Method Development
Xell offers targeted, rapid and efficient services for the development of custom analytical methods and is your ideal partner to...
ddPCR-based Analysis
The digital droplet PCR (ddPCR) is a method suitable for absolute quantification of DNA and RNA samples without the need of...
Dipeptide Analysis
UHPLC-MS/MS based measurement of dipeptides. Please contact us for more information.
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Element Analysis Bundle
Our ICP-MS method covers the following elemtents. Please select your elements of choice.
ELISA-based Analysis
As an immunological assay, the ELISA (enzyme-linked immunosorbent assay) can be applied for a broad range of cell culture derived...
Fat-soluble Vitamin Analysis
Our UHPLC-MS/MS method covers the following fat-soluble vitamins: Vitamin A: Retinol Vitamin D: Cholecalciferol Vitamin D:...
Glutathione Analysis
UHPLC-MS/MS based measurement of glutathione (oxidized and reduced state). Please contact us for more information.
Highly abundant Cation Analysis
Measurement of the highly abundant cations Sodium, Potassium, Magnesium, Calcium and Iron using ICP-MS.
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Organic Acid Analysis - UHPLC based method
Organic acid content is determined using UHPLC-MS. Citric acid, Fumaric acid, Lactic acid, Malic acid, Pyruvat, Succinic acid,...
Particle Size Distribution
Determination of the particle size distribution in solid samples using Laser diffraction plus advanced Polarization Intensity...
Phosphate Analysis
Photometric assay for the quantitative analysis of inorganic phosphate (ortho-phosphate).
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Polyamine Analysis
Polyamine levels in mammalian cells play a key role in cells’ viability as well as protein synthesis. Knowing the polyamine content...