China Factory Direct
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| CAS number | 9048-71-9 |
| Product name | SEPHADEX G-50 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Biopharmaceuticals | Protein purification | Size-exclusion chromatography for protein separation, removing low-molecular-weight impurities or performing desalting based on molecular size |
| Molecular biology | Nucleic acid purification and desalting | Desalting DNA or RNA samples and removing short fragments to improve downstream assay efficiency |
| Medical R&D | Peptide separation | Size-based fractionation of peptide mixtures via chromatography using molecular sieving principles |
| Biochemical research | Enzyme preparation purification | Removal of low-molecular-weight impurities from enzyme extracts while retaining high-molecular-weight active enzyme components |
| Clinical diagnostics | Sample pretreatment | Removal of low-molecular-weight metabolites from biological fluid samples to enrich target macromolecules for analysis |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Assessment of physical form, color, and homogeneity under controlled lighting conditions. |
| Particle Size Distribution | Laser Diffraction | Measurement of particle size distribution based on light scattering patterns of suspended gel particles. |
| Swelling Ratio | Gravimetric Method | Determination of water uptake capacity by measuring weight gain after equilibration in buffer solution. |
| Fractionation Range | Gel Filtration Chromatography | Evaluation of molecular weight separation performance using standard protein or dextran markers. |
| pH (1% w/v suspension) | pH Meter | Measurement of hydrogen ion activity in aqueous suspension using calibrated pH electrode. |
| Heavy Metals (as Pb) | ICP-OES | Quantification of trace metal impurities by atomic emission spectroscopy after acid digestion. |
| Residual Solvents (e.g., acetone, isopropanol) | Gas Chromatography (GC-FID) | Separation and detection of volatile organic residues using flame ionization detection. |
| Total Organic Carbon (TOC) | Combustion-NDIR | Oxidation of organic carbon to CO2 followed by non-dispersive infrared detection. |
| Microbial Contamination | Membrane Filtration | Enumeration of viable aerobic microorganisms by filtration, membrane transfer, and colony counting on agar media. |
| Loss on Drying | Thermogravimetry | Determination of volatile content by mass loss upon heating at defined temperature and duration. |
| Chloride Content | Potentiometric Titration | Quantification of chloride ions using silver nitrate titrant and silver indicator electrode. |
| Protein Binding Capacity | UV-Vis Spectrophotometry | Measurement of bovine serum albumin (BSA) adsorption via absorbance change at 280 nm. |
| Test Item | Specification |
|---|---|
| Appearance | White to off-white, free-flowing granular powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.5% |
| Solubility | Freely soluble in water; insoluble in organic solvents (e.g., ethanol, acetone) |
| Odor | Characteristic mild, non-irritating odor |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.