HPLC Inlet Filter & Solvent Suction Filter
316L Stainless Steel Filters for HPLC Mobile Phase Reservoirs
Protect HPLC pumps and flow paths from particles entering through the mobile phase reservoir. Available in multiple pore sizes, tubing connections and OEM configurations.
- 316L Stainless Steel
- Multiple Pore Sizes
- OEM & Custom Configurations
- Compatible Options Available
Choose Your HPLC Inlet Filter
Listed 316L models are offered in 2 μm, 5 μm, 10 μm and 20 μm. Pore size is selected with the geometry and tubing connection. It is not a separate catalog family on this page.
OD tubing HPLC suction filter
Model: Confirm on RFQ
Pore size: 2 / 5 / 10 / 20 μm
Material: 316L sintered stainless steel
Connection: 1/16″ and 1/8″
Typical use: Solvent line slides over the filter stem
Compatibility: Confirm on RFQ
1/16″ HPLC solvent filter
Model: PCF0B-00127
Pore size: 2 / 5 / 10 / 20 μm
Material: 316L sintered stainless steel
Connection: 1/16″
Typical use: OD connection on 1/16 in suction tubing
Compatibility: Shimadzu 228-45707-91 listed for evaluation
1/8″ HPLC solvent filter
Model: PCF0B-00128
Pore size: 2 / 5 / 10 / 20 μm
Material: 316L sintered stainless steel
Connection: 1/8″
Typical use: OD connection on 1/8 in suction tubing
Compatibility: Shimadzu 370-02010-01 listed for evaluation
ID tubing filter, multi-stage joint A series
Model: PCF0B-00131
Pore size: 2 / 5 / 10 / 20 μm
Material: 316L sintered stainless steel
Connection: Multi-stage ID options A-D
Typical use: Stepped ID stem for mixed tubing sizes
Compatibility: Confirm on RFQ
ID tubing filter B series
Model: Confirm on RFQ
Pore size: 2 / 5 / 10 / 20 μm
Material: 316L sintered stainless steel
Connection: 1/16″, 1/8″ and listed larger IDs
Typical use: ID connection with size-specific bodies
Compatibility: Waters 700003616 listed for evaluation
Flat / circle-plate inlet filter
Model: PCF0B-00139
Pore size: 2 / 5 / 10 / 20 μm
Material: 316L sintered stainless steel
Connection: 1/8″ one-step connector
Typical use: Low-profile disc sinker in the reservoir
Compatibility: Agilent 01018-60025 / AG01018-60025 listed for evaluation
Flat-head 3-step inlet filter
Model: PCF0B-00140
Pore size: 2 / 5 / 10 / 20 μm
Material: 316L sintered stainless steel
Connection: 1/8″ three-step (18.5-2-2.5 mm)
Typical use: Flat head with 3-step 1/8 in connector
Compatibility: Agilent 01018-60025 / AG01018-60025 listed for evaluation
ID tubing filter, one-step connector
Model: Confirm on RFQ
Pore size: 2 / 5 / 10 / 20 μm
Material: 316L sintered stainless steel
Connection: 1/8″ and 3/16″
Typical use: Single-step ID stem in the solvent bottle
Compatibility: Confirm on RFQ
What Is an HPLC Inlet Filter?
An HPLC inlet filter is a porous filter installed at the end of the solvent suction tubing inside the mobile phase reservoir. It removes particles before the solvent enters the HPLC pump and flow path.
HPLC inlet filters are also commonly called solvent inlet filters, HPLC suction filters, solvent suction filters and mobile phase inlet filters. HIPSOUL parts on this page are 316L sintered stainless steel for OD tubing, ID tubing and flat-plate reservoir layouts. They are not HPLC inline filters and not guard columns.
- Solvent Bottle
- Inlet / Suction Filter
- Pump
- Injector
- Column
- Detector
FILTER BEFORE THE PUMP. The sintered body stays in the mobile phase reservoir on the suction tubing. It is not a high-pressure inline filter.
Why Use a Solvent Inlet Filter in HPLC?
Particle contamination
Captures particles from mobile phase reservoirs before they reach the pump.
Pump protection
Helps reduce contamination of pump components and check valves.
Flow stability
Reduces the risk of particles entering downstream fluid paths.
Maintenance control
Provides a simple upstream filtration point that can be inspected, cleaned or replaced.
HPLC Suction Filter Types
Different HPLC systems use different inlet filter geometries, pore sizes and tubing connections. Select the configuration based on instrument design, mobile phase requirements and existing tubing.
Cylindrical inlet filter
OD tubing series. The solvent line slides over the filter stem. Material: 316L sintered stainless steel. Pore size: 2 / 5 / 10 / 20 μm. Connections: 1/16 in and 1/8 in, with listed body diameters.
Flat / disc-type inlet filter
Low-profile sintered plate for reservoir layouts that need a short body. Material: 316L sintered stainless steel. Pore size: 2 / 5 / 10 / 20 μm. Listed connection: 1/8 in, D23.5 × L5.4 mm.
Tubing-connected suction filter
ID series: the solvent tubing inserts into a straight or multi-stage stem. Material: 316L sintered stainless steel. Pore size: 2 / 5 / 10 / 20 μm. Listed IDs include 1/16 in, 1/8 in, 3/16 in and stepped combinations.
OEM custom inlet filter
Custom stem diameter, length, OD or ID geometry and listed pore sizes can be evaluated from a drawing, sample or existing part number. HIPSOUL option shown after dimensional review.
PCF0B-00131 A-series ID options listed on the current catalog: A) ID 1.5-2.2-3, D12.7 × L28.5; B) ID 2-2.5-3, D12.7 × L28.5 or D19.7 × L30.0; C) ID 1.5-1/16″ and 2.2-3.0-1/8″, D12.7 × L28.5; D) 1/8″-1/16″-3/16″ multi-stage, D25 × L35.
HPLC Inlet Filter Selection Guide
| Model | Product type | Material | Pore size | Dimensions | Tubing / connection | Compatible system | Typical application | Action |
|---|---|---|---|---|---|---|---|---|
| OD cylindrical | Cylindrical inlet filter | 316L | 2 / 5 / 10 / 20 μm | D9.5 × L33.0 ; D12.7 × L28.5 ; D12.7 × L32.2 | 1/16″ and 1/8″ | Confirm on RFQ | Solvent line slides over the filter stem | Get a Quote |
| OD OEM head | Cylindrical inlet filter | 316L | 2 / 5 / 10 / 20 μm | D12.7 mm, OEM size available | 1/16″ and 1/8″ | Confirm on RFQ | Custom stem / head OD tubing layouts | Get a Quote |
| PCF0B-00127 | Tubing-connected suction filter | 316L | 2 / 5 / 10 / 20 μm | D12.0 mm, OEM size available | 1/16″ | Shimadzu 228-45707-91 listed for evaluation | OD connection on 1/16 in suction tubing | Get a Quote |
| PCF0B-00128 | Tubing-connected suction filter | 316L | 2 / 5 / 10 / 20 μm | D12.0 mm, OEM size available | 1/8″ | Shimadzu 370-02010-01 listed for evaluation | OD connection on 1/8 in suction tubing | Get a Quote |
| PCF0B-00131 | Tubing-connected suction filter | 316L | 2 / 5 / 10 / 20 μm | D12.7 × L28.5 ; D19.7 × L30.0 ; D25 × L35 | Multi-stage ID options A-D | Confirm on RFQ | Stepped ID stem for mixed tubing sizes | Get a Quote |
| ID B series | Tubing-connected suction filter | 316L | 2 / 5 / 10 / 20 μm | D10.0 × L19.5 ; D12.7 × L28.5 ; D12.0 × L20.0 ; D16.0 × L32.0 ; D25.0 × L52.7 | 1/16″, 1/8″ and listed larger IDs | Waters 700003616 listed for evaluation | ID connection with size-specific bodies | Get a Quote |
| ID one-step | Cylindrical inlet filter | 316L | 2 / 5 / 10 / 20 μm | 1/8″: D12.7 × L28.5 and D19.7 × L30.0 ; 3/16″: D25.0 × L30.0 and D25.0 × L40.0 | 1/8″ and 3/16″ | Confirm on RFQ | Single-step ID stem in the solvent bottle | Get a Quote |
| PCF0B-00139 | Flat / disc-type inlet filter | 316L | 2 / 5 / 10 / 20 μm | D23.5 × L5.4 mm | 1/8″ one-step connector | Agilent 01018-60025 / AG01018-60025 listed for evaluation | Low-profile disc sinker in the reservoir | Get a Quote |
| PCF0B-00140 | Flat / disc-type inlet filter | 316L | 2 / 5 / 10 / 20 μm | D23.5 × L5.4 mm | 1/8″ three-step (18.5-2-2.5 mm) | Agilent 01018-60025 / AG01018-60025 listed for evaluation | Flat head with 3-step 1/8 in connector | Get a Quote |
Not sure which inlet filter fits your system? Send us your instrument model, existing filter part number or dimensions.
Pressure rating, thread form and stock quantity are not published per SKU on this page. If a drawing specifies those values, send them with the RFQ. Do not assume a HIPSOUL filter is identical to a branded spare until dimensions are checked.
HPLC Inlet Filter vs Inline Filter
HPLC Inlet Filter
- Location
- Inside solvent / mobile phase reservoir
- Position
- Before pump
- Purpose
- Remove particles before solvent enters the HPLC system
- Typical names
- Solvent inlet filter, suction filter, reservoir filter
HPLC Inline Filter
- Location
- Inside HPLC flow path
- Position
- Typically downstream of the pump depending on configuration
- Purpose
- Protect downstream components / column from particles
- Typical names
- Inline filter, high-pressure inline filter
- Solvent Bottle
- Inlet Filter
- Pump
- Inline Filter
- Injector
- Column
Looking for a high-pressure filter installed in the flow path? View HPLC Inline Filters. Related hardware: HPLC stainless steel frits, HPLC guard columns, HPLC tubing and HPLC fittings.
Replacement & Compatible HPLC Inlet Filters
Looking for an alternative to your existing HPLC solvent inlet filter? Send us the instrument model, original part number, dimensions or product photo for compatibility evaluation.
| Brand | Reference part number | Product type | Material | Pore size | HIPSOUL option | Action |
|---|---|---|---|---|---|---|
| Agilent | 01018-60025 / AG01018-60025 | Flat / disc-type | 316L | 2 / 5 / 10 / 20 μm | PCF0B-00139 or PCF0B-00140 | Check Compatibility |
| Shimadzu | 228-45707-91 | OD 1/16 in suction filter | 316L | 2 / 5 / 10 / 20 μm | PCF0B-00127 | Check Compatibility |
| Shimadzu | 370-02010-01 | OD 1/8 in suction filter | 316L | 2 / 5 / 10 / 20 μm | PCF0B-00128 | Check Compatibility |
| Waters | 700003616 | ID tubing suction filter | 316L | 2 / 5 / 10 / 20 μm | ID B series | Check Compatibility |
Third-party trademarks and part numbers are used for product identification and compatibility reference purposes only. HIPSOUL is not affiliated with or endorsed by these manufacturers unless otherwise stated.
How to Choose an HPLC Solvent Inlet Filter
Confirm instrument / existing filter
Provide the HPLC model or existing part number so geometry can be compared.
Confirm pore size
Match the filtration requirement and original system specification. Listed options are 2, 5, 10 and 20 μm.
Confirm dimensions and connection
Check tubing OD/ID, OD vs ID stem style, flat vs cylindrical body, and listed diameters and lengths.
Confirm material and solvent compatibility
Choose material appropriate for the intended mobile phase. Catalog bodies on this page are 316L sintered stainless steel.
Custom HPLC Suction Filters for OEM Applications
Custom dimensions, porous-metal geometry, listed pore sizes, and tubing or connection changes can be evaluated from a drawing, sample or existing number. Prototype review and batch supply are handled through the same HPLC hardware workflow. See OEM and custom capabilities.
What can be customized?
- Body diameter and length
- Porous metal geometry, including cylindrical and flat-plate layouts
- Pore size within the listed 2 / 5 / 10 / 20 μm range
- OD or ID stem and multi-stage tubing connections
- Prototype evaluation from drawing or sample
- Batch production after dimensional agreement
- OEM packaging and branding where the project specifies it
HPLC Inlet Filter Cleaning & Replacement
Inspect a solvent inlet filter when pump suction drops, bubbles increase, or particles are visible on the sintered body. Those signs can indicate blockage, incomplete immersion or damage. They do not by themselves diagnose pump failure.
Some 316L sintered inlet filters can be cleaned. Cleaning compatibility depends on the filter material, the mobile phase and the contamination type. Follow the HPLC manufacturer instructions and any filter-specific guidance before rinsing, ultrasonic treatment or reinstallation. Do not use a cleaning solvent that attacks the sinter, the stem polymer or the existing HPLC flow path.
Replace the filter when the porous body is cracked, crushed, irreversibly blocked, or when compatible cleaning does not restore suction. Keep the replacement fully immersed in the reservoir.
Related reading: selection, use and maintenance of HPLC solvent filters and clogged HPLC systems: causes and prevention.
Why Source HPLC Inlet Filters from HIPSOUL?
Porous metal manufacturing
316L sintered bodies for reservoir suction filters, produced with the HPLC hardware workflow used for related frits and fittings.
Multiple pore size options
Listed catalog options are 2 μm, 5 μm, 10 μm and 20 μm on the OD, ID and flat-plate families shown above.
OEM and custom geometry
Stem diameter, length, OD/ID layout and flat-head designs can be quoted from a drawing, sample or existing number.
Compatibility evaluation
Reference numbers for Agilent, Shimadzu and Waters are listed for identification. Send dimensions for a HIPSOUL option review.
Prototype to batch supply
Prototype review and later batch production follow dimensional agreement. Named certificates are issued when they are part of the agreed specification.
Chromatography consumables support
Inlet filters sit with inline filters, frits, guard columns, tubing, fittings and sample loops.
Inspection currently documented for this hardware family: dimensional inspection and manufacturing checks before packaging. Bubble-point certificates are not published per SKU on this page.
HPLC Inlet Filter FAQ
What is an HPLC inlet filter?
An HPLC inlet filter is a porous filter installed at the end of the solvent suction tubing inside the mobile phase reservoir. It removes particles before the solvent enters the HPLC pump and flow path. HIPSOUL models on this page are 316L sintered stainless steel in OD, ID and flat-plate geometries.
Is an HPLC suction filter the same as a solvent inlet filter?
In many HPLC applications, the terms refer to the porous filter installed at the solvent suction line inside the mobile phase reservoir. Naming varies between manufacturers and laboratories. HPLC inlet filter, solvent inlet filter, HPLC suction filter and mobile phase inlet filter are used here for the same reservoir hardware, not for a high-pressure inline filter.
Where is an HPLC inlet filter installed?
It sits in the solvent or mobile phase bottle, fully immersed, on the low-pressure suction line that feeds the pump. Do not install a reservoir inlet filter in the high-pressure path after the pump, and do not use it as a substitute for an HPLC inline filter or a guard column.
What pore size should I choose for an HPLC inlet filter?
Match the original system specification and the cleanliness of the mobile phase. Listed HIPSOUL 316L models are offered in 2 μm, 5 μm, 10 μm and 20 μm. If the existing part number or drawing specifies a pore, send that value with the RFQ rather than guessing a finer rating.
What is the difference between an HPLC inlet filter and an inline filter?
An HPLC inlet filter is a low-pressure suction filter in the reservoir, before the pump. An HPLC inline filter is a particle trap in the pressurized flow path and is typically used to protect downstream components or the column. The two positions are complementary, not interchangeable.
Can stainless steel HPLC inlet filters be cleaned?
Some 316L sintered inlet filters can be inspected, rinsed with a compatible solvent and returned to service when the sinter is intact. Cleaning depends on filter material, mobile phase and contamination type, and should follow the instrument and filter instructions. Replace the filter if flow cannot be restored or the porous body is damaged.
How often should an HPLC solvent inlet filter be replaced?
Replace it when suction is restricted, the porous body is damaged, or mobile-phase cleanliness can no longer be maintained by inspection and compatible cleaning. Interval depends on solvent quality, dust load and how fully the filter stays immersed. There is no single calendar interval published for every HPLC method on this page.
Can you provide compatible filters for Agilent, Shimadzu or Waters systems?
The catalog lists reference part numbers for compatibility evaluation: Agilent 01018-60025 / AG01018-60025, Shimadzu 228-45707-91, Shimadzu 370-02010-01 and Waters 700003616. These are identification references, not claims of identical branded spare parts. Send the instrument model, original number, dimensions or a photo for a HIPSOUL option review.
Can HPLC suction filters be customized?
Yes. Custom body diameter and length, pore size within the listed 2-20 μm range, OD or ID stem geometry, and flat-head layouts can be evaluated from a drawing, sample or existing part number. See OEM and custom capabilities or send the requirement on the quote form.
HPLC Solvent Filter Guides
Use these articles for additional solvent-filter context. This page remains the commercial hub for HPLC inlet filters, solvent inlet filters and HPLC suction filters. Types of HPLC solvent filters · Why use an HPLC solvent filter · Essential guide to HPLC solvent filters · Three essential HPLC filters.
Need the Right HPLC Inlet Filter for Your System?
Send us your HPLC model, existing filter part number, dimensions or application requirements. Our team can help evaluate a suitable solvent inlet filter or custom suction filter configuration.
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