Guard Filters SUMIPAX Filter
Porous glass filter to extend the lifetime of column without changing its separation performance
SUMIPAX Filter (for analysis) is a guard column which houses a 4 mmφ × 4 mmL cylindrical glass filter with 2-μm through holes. When a sample is analyzed using HPLC, performance of separation column decreases because:
- substances contained in the sample are adsorbed at the column entrance, and chemically modify the surface of packing materials; and/or,
- minute dust generated from pump, injector, etc. accumulates in the column, and gradually modifies the column physically.
SUMIPAX Filter is a filter with guard column functions. By inserting before a column, it prevents deterioration of the column.
SUMIPAX Filter dimensions and bonded phase
SUMIPAX Filter dimensions
| Dimensions, construction | Pressure drop at flow rate in the parenthesis | Internal diameter of compatible columns | Flow rate range | |
|---|---|---|---|---|
| SUMIPAX Filter Anlytical |
Length4mm Diameter4mm |
About0.1 MPa（ 1mL/min） About0.8 MPa（10mL/min） |
4, 4.6, 6, 8, 10 | 0.2 mL/min～ 10.0 mL/min |
| SUMIPAX Filter Semi-micro |
Length2mm Diameter2mm |
0.1MPa（0.2mL/min） About 0.4 MPa（2mL/min） |
1, 2, 3, 4,4.6, 6 | 0.05 mL/min～ 2.0 mL/min |
| SUMIPAX Filter Preparative |
Fitted inside with several filters | About0.1 MPa（20mL/min） About0.6 MPa（100mL/min） |
10, 20, 50 | 5.0 mL/min～ 100 mL/min |
- ＊Mobile phase: methanol/water (1/1)
SUMIPAX Filter bonded phase
| Filter substrate | Compatible columns | Applicability | |
|---|---|---|---|
| SUMIPAX Filter PG-ODS |
Porous glass substrate treated with ODS and then endcapped |
SUMICHIRAL OA series |
|
| SUMIPAX Filter PG-OH |
Porous glass substrate as received |
SUMICHIRAL AGP、CBH、HSA |
|
Application of SUMIPAX Filter
Analytical HPLC filters
Semi-micro HPLC filters
Applications of semi-micro HPLC by connecting with SUMIPAX Filter PG-ODS (for semi-micro HPLC) are shown below. No change is observed on chromatograms before and after connection. Semi-micro HPLC filters are also useful for LC-MS.
SUMIPAX Filter HB （hybrid-type）
The SUMIPAX Filter HB is line-upped for ultra high performance liquid chromatography
Features of SUMIPAX Filter HB
The dual layer structure improves the particulate capture effect of the filter
⇒ By combining porous glass and sintered metal filter, the particulate capture rate is drastically improved compared to when one of them is used uncombined.
- Deactivation of porous glass ⇒ Glass surface is treated with ODS and endcapping
- Maximum filter pressure ⇒ 50 MPa
- Low cost replacement filter ⇒ Excellent running cost performance
Particulate capture effect
Silica particulates were injected into a column fitted with a filter and the change in the column pressure was observed and compared.
| Filters |
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|---|---|
| HPLC conditions |
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Fig. 2 Column pressure versus the number of injections in case of using only a sintered metal filter
When only a glass filter or only a sintered metal filter is used the column pressure barely increased after over 300 injections, indicating that the silica particles added to the mobile phase were not filtered out by the glass filter or the sintered metal filter and also passed through the column. Each filter is incapable of filtering out (capturing and eliminating) 0.1-μm silica particles by itself.
HB filter (hybrid type) has much more improved particulate capturing performance through its dual layer structure with glass filter and sintered metal filter. By connecting before a column, it extends the lifetime of the column. HB filter is particularly effective in protecting ultra-high performance LC columns.
SUMIPAX Filter for analytical HPLC
| Product name | Product discription | Product code |
|---|---|---|
| SUMIPAX Filter Starter kit PG-ODS |
SUSholder 1、 filters 1 | GAODS001 |
| SUMIPAX Filter PG-ODS【Replacement filters】 |
Replacement filtersー 3 | GAODS003 |
| SUMIPAX Filter Starter kitPG-OH |
SUS holder 1、filters 1 | GA-OH001 |
| SUMIPAX Filter PG-OH【Replacement filters】 |
Replacement filters 3 | GA-OH003 |
| SUMIPAX Holder | SUS holder 1 | GAACC001 |
| Connection kit | Ferrule screws 2、PEEK tube 1 | GAACC002 |
SUMIPAX Filter for semi-micro HPLC
| Product name | Product discription | Product code |
|---|---|---|
| SUMIPAX Filter Starter kit PG-ODS |
SUS holder 1、Filter 1 | GMODS001 |
| SUMIPAX Filter PG-ODS【Replacement filters】 |
Replacement filters 3 | GMODS003 |
| SUMIPAX Filter Starter kit PG-OH |
SUS holder 1、Filter 1 | GM-OH001 |
| SUMIPAX Filter PG-OH【Replacement filters】 |
Replacement filters 3 | GM-OH003 |
| SUMIPAX Holder | SUS holder 1 | GMACC001 |
| Connection kit | Ferrule screws 2、PEEK tube 1 | GMACC002 |
SUMIPAX Filter for preparative HPLC
| Product name | Product discription | Product code |
|---|---|---|
| SUMIPAX Filter Starter kit PG-ODS |
SUS holder 1、Filter 1、Teflon packing 2 | GPODS001 |
| SUMIPAX Filter PG-ODS【Replacement filters】 |
Filter 1、Teflon packing 2 | GPODS002 |
| SUMIPAX Filter Starter kit PG-OH |
SUS holder 1、Filter 1、Teflon packing 2 | GP-OH001 |
| SUMIPAX Filter PG-OH【Replacement filters】 |
Filter 1、Teflon packing 2 | GP-OH002 |
| SUMIPAX Holder | SUS holder 1 | GPACC001 |
| Connection kit | Ferrule screws 2、SUS tube 1 | GPACC002 |
SUMIPAX Filter HB (UHPLC)
| Product name | Product discription | Product code |
|---|---|---|
| SUMIPAX Filter HB Starter kit |
SUS holder 1、Filter 1 | GHODS001 |
| SUMIPAX Filter HB【Replacement filters】 |
Replacement filters 3 | GHODS003 |
| SUMIPAX Holder (UHPLC） |
SUS holder 1 | GUACC001 |
Contact Us for HPLC Columns
Please contact us for any information on related to HPLC columns.
- Telephone
- 18301939375
- FAX
- info@jinpanbio.com
Figure 1. Classification of chiral compounds by the functional group