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HPLC ANALYTICAL GRADES
Super Pure Spherical silica product line is dedicated to analytical HPLC and UHPLC where high efficiency and high mechanical strength is required.
HPLC SEMI-PREPARATIVE & FLASH GRADES
Flash chromatographt is a quick and easy way to separate complex mixtures of compounds. The silica gel is specifically designed to increase cartridge efficiency while exhibiting moderate back-pressure; and therefore improving resolution.
PREPARATIVE & FLASH GRADES
The silica gel is fully dedicated to preparative HPLC. The SMB line offers significant advantages including easy packing, high efficiency, and high capacity, thus offering economic advantages for large-scale processes.
INDUSTRIAL LC GRADES
Industrial Liquid Chromatography plays an essential role in many industrial sectors, this technique is uesd in the chemical, agrochemical, cosmetic, veterinary, pharmaceutical, etc., to purify natural extracts, organic intermediates, drug substances,etc...
Features & Benefits
>SPS purity SiO2 is higher than 99.99%
>Selection of particle sizes to optimize efficiency
>Tight distribution of particle sizes and spherical particle shape to reducr back-pressure
>Lot-to-Lot consistency for reproducible performance
>Superior pressure strength
>Consistent and reproducible retention times to allow direct scale-up from laboratory through process applications
>Large bulk quantities for all applications available, secutrd lots offered for process use
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HPLC Column Packing |
Physical and Chemical Parameters |
Features and Applications |
Specifications of HPLC Column (mm) |
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Particle Size (μm)
|
Pore Size ( A) |
Carbon Content (% ) |
PH Stability |
End-apping |
Separation mode |
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USHA C18 |
1.8 2 3 5 10 20 30 or even bigger particles |
70 100 120 200 300 etc. |
17 |
2~8 |
Yes |
Reversed-phase |
- High selection and high separation.
- Widely used in in the analysis of polar and hydrophobic substances, the first choice of all kinds of compounds. |
2.1x30 2.1x50 2.1x75 2.1x100 2.1x150 3.0x50 3.0x100 3.0x150 4.6x30 4.6x50 4.6x100 4.6x150 4.6x250 10x50 10x100 10x150 10x250 20x50 20x150 20x200 20x250 20x300 30x150 30x250 50x150 50x250 |
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USHA C18-G |
18 |
1~12 |
One-End-capping |
Reversed-phase |
- High selection and high separationl High- efficiency
- A wide range of pH values, the first choice of all insulin substances - Widely used in the analysis of polar and hydrophobic substances |
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USHA C18-BIO |
17.5 |
2~10 |
Double End-capping |
Reversed-phase |
- Specially designed for the separation of various alkaline compounds.- The pH tolerance range is 2~9. | |||
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USHA C18-T |
19 |
1.5~11 |
Double End-capping |
Reversed-phase |
- Designed for selective separation, aim for high quality separation and purification. | |||
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USHA C18-N |
16 |
2~8 |
No |
Reversed-phase |
- Unique bonding mode, can achieve 100% water phase condition. | |||
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USHA C18-AQ |
13 |
2~8 |
Yes |
Reversed-phase |
- C18 and polar group. | |||
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USHA C18-A |
10 |
2~8 |
Yes |
Reversed-phase |
- Low carbon content, suitable for separation of strongly polar and hydrophilic compounds. | |||
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USHA C8 |
10 |
2~8 |
Yes |
Reversed-phase |
- C8 has a relatively low hydrophobicity compared with C18 stationary, suitable for the separation of most hydrophobic compounds, more suitable for separating compounds with strong adsorption on C18 column. | |||
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USHA C4 |
3 |
2~8 |
Yes |
Reversed-phase |
- Suitable for the separation of polar and hydrophobic substances in C18 and C8 separation for too long. | |||
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USHA Phenyl (USHA phenyl column) |
12 |
2~8 |
Yes |
Reversed-phase |
- π- π interaction shows selectivity difference from that ofC18. | |||
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USHA NH2 (USHA amino column) |
4 |
2~8 |
Yes |
Normal-phase Reversed-phase |
- Strong polarity can be both positive and negative; The amino functional group provides a retention that allows the analysis of polar compounds under normal phase elution conditions. - Organic compounds in monosaccharides and polyglycans/ olefines/aromatics can be analyzed by acetonitrile and water. - In the buffer of low pH value, there is weak anion exchange which can separate some negatively charged molecules. |
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USHA CN (USHA cyan column) |
6 |
2~8 |
Yes |
Normal-phase Reversed-phase |
- Medium polarity cyanogroup, can be used in both positive andnegative phases.
- The hydrophobicity is relatively low in the stationary phase of reversed-phase chromatography and shows a different selectivity from that of C18 due to the π-electron interaction of the cyanide group. - Suitable for separation of components that have been separated for too long on C18, and suitable for the occasion where is very difficult to optimize the chromatogram on C18. - When very hydrophobic compounds cannot be eluted using standard C18 and C8 reversed-phase column, the most polarized inverting column can be a cyanide column. |
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USHA Diol |
5 |
2~7 |
No |
Normal-phase Hilic |
- Separation of polar and basic compounds using silanol residues. | |||
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USHA SiL |
3 5 7 9 10 20 30 or even bigger particles |
70 120 150 200 300 etc. |
-- |
1~6 |
Yes |
Normal-phase Hilic |
- <10ppm high purity spherical silica gel, very low metal impurities. - Can be used to separate polar and basic organic compounds, such as vitamins, steroids, and many other drug molecules. |
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USHB C18 |
17 |
2~8 |
Yes |
Reversed-phase |
- Exellent stability and repeatability, full cover bonded silica gelwas used as packing.- High selectivity and high separation. | |||
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USHB C18-BIO |
20 |
1.5~10 |
Double End-capping |
Reversed-phase |
- Specially designed for the separation of all kind of alkali compounds, the pH tolerance range can be 1.5-10. | |||
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USHB C18-BP |
14 |
2~7.5 |
Yes |
Reversed-phase |
- Low carbon content, suitable for separation of hydrophilic and polar compounds, and 100% pure water mobile phase. | |||
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USHB C8 |
10 |
2~8 |
Yes |
Reversed-phase |
- Suitable for separating most hydrophobic compounds | |||
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USHB SiL |
-- |
1~6 |
No |
Normal-phase Hilic |
- High purity spherical silica gel (metal impurities < l0ppm), withhigh column efficiency and good peak shape characteristics.
- Can be used to separate polar and basic organic compounds. |
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