BR Columns
SEPAX BR Columns support reversed-phase HPLC for moderately to strongly hydrophobic small molecules. Use the searchable catalog table below to compare the listed phases, particle sizes, pore sizes, dimensions and catalog numbers, then confirm the final configuration against the intended method and instrument requirements.
BR Columns specifications
| Product phase | Particle size (µm) | Pore size (Å) | Dimensions | Catalog number |
|---|---|---|---|---|
| BR-C18 | 5 | 120 | 4 × 10 mm | 102185-4001C |
| BR-C18 | 5 | 120 | 2 × 10 mm | 102185-2001C |
| BR-C18 | 3 | 120 | 4 × 10 mm | 102183-4001C |
| BR-C18 | 3 | 120 | 2 × 10 mm | 102183-2001C |
| BR-C18 | 1.8 | 120 | 2 × 10 mm | 102181-2001C |
| BR-C18 | 1.8 | 120 | 2 × 10 mm | 102181-2001 |
| BR-C18 | 5 | 120 | 4.6 × 50 mm | 102185-4605 |
| BR-C18 | 5 | 120 | 4.6 × 30 mm | 102185-4603 |
| BR-C18 | 5 | 120 | 4.6 × 250 mm | 102185-4625 |
| BR-C18 | 5 | 120 | 4.6 × 150 mm | 102185-4615 |
| BR-C18 | 5 | 120 | 4.6 × 100 mm | 102185-4610 |
| BR-C18 | 5 | 120 | 4 × 10 mm | 102185-4001 |
| BR-C18 | 5 | 120 | 21.2 × 50 mm | 102185-21205 |
| BR-C18 | 5 | 120 | 21.2 × 250 mm | 102185-21225 |
| BR-C18 | 5 | 120 | 21.2 × 150 mm | 102185-21215 |
| BR-C18 | 5 | 120 | 21.2 × 100 mm | 102185-21210 |
| BR-C18 | 5 | 120 | 2.1 × 50 mm | 102185-2105 |
| BR-C18 | 5 | 120 | 2.1 × 30 mm | 102185-2103 |
| BR-C18 | 5 | 120 | 2.1 × 250 mm | 102185-2125 |
| BR-C18 | 5 | 120 | 2.1 × 150 mm | 102185-2115 |
| BR-C18 | 5 | 120 | 2.1 × 100 mm | 102185-2110 |
| BR-C18 | 5 | 120 | 2 × 10 mm | 102185-2001 |
| BR-C18 | 5 | 120 | 7.8 × 250 mm | 102185-7825 |
| BR-C18 | 5 | 120 | 7.8 × 150 mm | 102185-7815 |
| BR-C18 | 5 | 120 | 30 × 50 mm | 102185-30005 |
| BR-C18 | 5 | 120 | 30 × 250 mm | 102185-30025 |
| BR-C18 | 5 | 120 | 30 × 150 mm | 102185-30015 |
| BR-C18 | 5 | 120 | 30 × 100 mm | 102185-30010 |
| BR-C18 | 5 | 120 | 10 × 50 mm | 102185-10005 |
| BR-C18 | 5 | 120 | 10 × 250 mm | 102185-10025 |
| BR-C18 | 5 | 120 | 10 × 150 mm | 102185-10015 |
| BR-C18 | 5 | 120 | 10 × 100 mm | 102185-10010 |
| BR-C18 | 3 | 120 | 4.6 × 50 mm | 102183-4605 |
| BR-C18 | 3 | 120 | 4.6 × 30 mm | 102183-4603 |
| BR-C18 | 3 | 120 | 4.6 × 250 mm | 102183-4625 |
| BR-C18 | 3 | 120 | 4.6 × 150 mm | 102183-4615 |
| BR-C18 | 3 | 120 | 4.6 × 100 mm | 102183-4610 |
| BR-C18 | 3 | 120 | 4 × 10 mm | 102183-4001 |
| BR-C18 | 3 | 120 | 2.1 × 50 mm | 102183-2105 |
| BR-C18 | 3 | 120 | 2.1 × 30 mm | 102183-2103 |
| BR-C18 | 3 | 120 | 2.1 × 250 mm | 102183-2125 |
| BR-C18 | 3 | 120 | 2.1 × 150 mm | 102183-2115 |
| BR-C18 | 3 | 120 | 2.1 × 100 mm | 102183-2110 |
| BR-C18 | 3 | 120 | 2 × 10 mm | 102183-2001 |
| BR-C18 | 10 | 120 | 7.8 × 250 mm | 102189-7825 |
| BR-C18 | 10 | 120 | 7.8 × 150 mm | 102189-7815 |
| BR-C18 | 10 | 120 | 30 × 50 mm | 102189-30005 |
| BR-C18 | 10 | 120 | 30 × 250 mm | 102189-30025 |
| BR-C18 | 10 | 120 | 30 × 150 mm | 102189-30015 |
| BR-C18 | 10 | 120 | 30 × 100 mm | 102189-30010 |
| BR-C18 | 10 | 120 | 21.2 × 50 mm | 102189-21205 |
| BR-C18 | 10 | 120 | 21.2 × 250 mm | 102189-21225 |
| BR-C18 | 10 | 120 | 21.2 × 150 mm | 102189-21215 |
| BR-C18 | 10 | 120 | 21.2 × 100 mm | 102189-21210 |
| BR-C18 | 10 | 120 | 10 × 50 mm | 102189-10005 |
| BR-C18 | 10 | 120 | 10 × 250 mm | 102189-10025 |
| BR-C18 | 10 | 120 | 10 × 150 mm | 102189-10015 |
| BR-C18 | 10 | 120 | 10 × 100 mm | 102189-10010 |
| BR-C18 | 1.8 | 120 | 4.6 × 50 mm | 102181-4605 |
| BR-C18 | 1.8 | 120 | 4.6 × 30 mm | 102181-4603 |
| BR-C18 | 1.8 | 120 | 4.6 × 150 mm | 102181-4615 |
| BR-C18 | 1.8 | 120 | 4.6 × 100 mm | 102181-4610 |
| BR-C18 | 1.8 | 120 | 2.1 × 50 mm | 102181-2105 |
| BR-C18 | 1.8 | 120 | 2.1 × 30 mm | 102181-2103 |
| BR-C18 | 1.8 | 120 | 2.1 × 150 mm | 102181-2115 |
| BR-C18 | 1.8 | 120 | 2.1 × 100 mm | 102181-2110 |
Overview
Named phases: BR-C18
Separation categories: RP
Available particle sizes: 1.8, 3, 5, 10 µm
Available pore sizes: 120 Å
Scientific principle
Reversed-phase chromatography retains analytes through interactions with a comparatively non-polar stationary phase, typically using aqueous-organic mobile phases.
For detailed surface chemistry and packing guidance, contact technical support.
What are SEPAX BR Columns?
SEPAX BR Columns are catalog-listed products for reversed-phase HPLC. The family is intended for moderately to strongly hydrophobic small molecules, with available configurations shown in the specification table on this page.
How do BR Columns work?
The separation is governed by hydrophobic partitioning on the BR-C18 stationary phase. Selectivity also depends on the exact phase, mobile phase, sample properties, temperature, flow rate and column dimensions.
How to select a configuration
Start with the required separation mechanism and named phase. Then compare particle size, pore size where listed, internal diameter, length and catalog number. Match the configuration to system pressure capability, sample load and the scale of the method.
Applications
This family is relevant to routine pharmaceutical and chemical analysis. Suitability must be confirmed experimentally with the actual sample and method conditions.
Method development
Begin with a documented method or a chemically reasonable starting condition for the selected phase. Control sample solvent strength, buffer compatibility, pH, ionic strength, gradient profile, temperature and injection volume. Change one variable at a time and record system-suitability results.
Column care and storage
Filter samples and mobile phases, prevent buffer precipitation, avoid sudden solvent incompatibility and stay within the product-specific operating limits supplied with the column. After use, remove strongly retained material with a compatible wash and store the column only in a suitable solvent for that exact phase.
Replacement and method transfer
Do not select a replacement by dimensions alone. Compare separation mechanism, stationary-phase type, particle size, pore size where applicable, column geometry and method conditions. Verify equivalence through retention, resolution, efficiency, tailing and system-suitability testing.
For catalog identification and application support, contact SEPAX technical support in India.
Troubleshooting guidance
Investigate blocked inlet frits, contaminated guard columns, mobile-phase pH and sample solvent mismatch when backpressure or peak distortion appears.
Cleaning and regeneration
Flush out salts with water-compatible solvent before using a stronger organic wash. Avoid leaving buffered mobile phase stagnant in the column for extended periods.
Mobile phase recommendations
Use conventional reversed-phase aqueous–organic mobile phases. Control analyte ionization with an appropriate buffer or modifier and allow complete equilibration after major composition changes.
Related SEPAX product families
For complementary selectivity or workflow steps, also review GP Columns, HP Columns and Guard and Accessories. These related families can support orthogonal method development, sample cleanup, confirmation or scale-up depending on the application.
Frequently asked questions
What are BR Columns?
BR Columns are SEPAX catalog products used for reversed-phase HPLC. The listed configurations can be compared by phase, particle size, pore size where applicable, dimensions and catalog number.
How do BR Columns work?
They separate analytes through hydrophobic partitioning on the BR-C18 stationary phase. The exact behavior depends on the selected phase and method conditions.
Which BR Columns should I choose?
Choose first by separation mechanism and named phase, then by particle size, pore size where listed, internal diameter, length, sample load and system pressure capability.
Does this page show the catalog configurations for BR Columns?
Yes. The searchable specification table presents the configurations included in the website catalog data for this family. Use the catalog number when requesting confirmation or a quotation.
What applications are suitable for BR Columns?
This family is relevant to routine pharmaceutical and chemical analysis. Final suitability depends on the analyte, sample matrix and method requirements.
Who supplies BR Columns in India?
Akira Analytical Solutions Pvt. Ltd. supplies SEPAX products in India and assists with catalog identification, column selection and technical enquiries.
Technical support for BR Columns
Send the application, current method and preferred dimensions to Akira Analytical Solutions Pvt. Ltd..