Pre-Filter Laboratory Filters
Last Updated: April 1, 2025
Description
Pre-filter laboratory filters are designed to remove larger particles and contaminants from a sample before it undergoes further filtration or analysis. These filters act as a preliminary step in the filtration process, ensuring that the subsequent filters or analytical instruments are not clogged or damaged by larger debris.
Working Principle
Pre-filter laboratory filters operate by capturing larger particles from a fluid or gas stream as it passes through the filter medium. The filter medium is typically composed of materials with specific pore sizes that allow smaller particles to pass through while trapping larger ones. This process not only protects downstream equipment but also enhances the efficiency and lifespan of finer filters used in subsequent stages. The utility of pre-filters lies in their ability to reduce the load on primary filters, thus maintaining the integrity and accuracy of laboratory analyses.
Applications
Pre-filter laboratory filters are commonly used in various laboratory settings where sample purity is critical. For example, in chemical laboratories, they are employed to pre-filter samples before chromatographic analysis to prevent column clogging. In biological laboratories, pre-filters are used to remove cellular debris from samples before conducting DNA or protein assays. Additionally, they are utilized in environmental testing to filter out particulate matter from air or water samples prior to detailed analysis.
Advantages over other Laboratory Filters
Pre-filter laboratory filters offer distinct advantages over other types of laboratory filters. They are particularly effective in extending the life of more expensive and sensitive filters by reducing the particulate load. This pre-filtration step minimizes the frequency of filter replacement and maintenance, leading to cost savings and increased operational efficiency. Furthermore, by preventing clogging, pre-filters help maintain the accuracy and reliability of analytical results.
Limitations
One limitation of pre-filter laboratory filters is their inability to capture very fine particles, which necessitates the use of additional filtration stages for complete sample purification. Additionally, the effectiveness of pre-filters can be compromised if the filter medium becomes saturated with large particles, requiring regular monitoring and replacement to maintain optimal performance.
Considerations
When selecting pre-filter laboratory filters, several factors should be considered. Initial costs can vary depending on the material and pore size of the filter medium. Operating expenses are generally low, but regular replacement and maintenance are necessary to ensure continued effectiveness. Durability is an important consideration, as filters that are more robust can withstand higher pressures and longer usage periods. Accuracy in filtration is dependent on selecting the appropriate pore size for the specific application. Replacement and maintenance costs should be factored into the overall budget, as frequent changes may be required depending on the sample load and frequency of use.
from IDEX Health & Science
This Inline MicroFilter End-Fitting comes with a PEEK Frit. Our fitting helps to protect your column from particles produced in the sample phase or from pump seal and sample injection valve wear. This is available as a single or comes in a 10pk. [See More]
- Filter Type: Pre-Filter
- Pore Size: 0.5000
- Filter Medium Material: PEEK
from diaago
CA Membrane Syringe Filters from CELLTREAT are molded in the polypropylene housings, providing a reliable seal without the use of adhesives. Features. Female luer-lock inlet and male luer slip outlet. Color coded by membrane type for easy identification. CA (Cellulose Acetate). Low protein binding,... [See More]
- Filter Type: Syringe; Pre-Filter
- Filter Medium Material: Cellulose Acetate
- Configuration: Filter and Housing
- Housing Material: Polypropylene
from Western Analytical Products
"Use these biocompatible filters to remove particulates from a solvent solution before they reach your system. Available in Polyethylene and PTFE, in a variety of porosities." [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our UHMWPE Frit is manufactured from UHMWPE a durable and widely used polymer. It is ideal for use in both general and aqueous-based environments. It has a porosity of 2 µm. [See More]
- Filter Type: Pre-Filter
- Disc Diameter, Sheet Width: 1.57
- Filter Medium Material: UHMWPE
- Thickness: 1651
from diaago
CELLTREAT's Glass Fiber Filter Disks are an ideal pre-filter to prevent clogging when filtering viscous or particulate-laden solutions when used alongside with CELLTREAT Scientific Products vacuum Filter Systems and Bottle Top Filters. Features. Increase filtration speed by removing larger particles... [See More]
- Filter Type: Pre-Filter
- Filter Shape: Disc
- Filter Medium Material: Glass Fiber
- Disc Diameter, Sheet Width: 50
from Western Analytical Products
. Excellent system Protection. Ultra-Low hold-Up Volume. 0.5 µm and 2 µm Porosity. These disposable sample Filters are designed to remove particles. from analytical hPLc samples. The polypropylene holder incorporates. a 1/32 thick, 1/8 diameter stainless steel frit, which causes very... [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our UHMWPE Frit is manufactured from UHMWPE a durable and widely used polymer. It is ideal for use in both general and aqueous-based environments. It has a porosity of 2 µm. [See More]
- Filter Type: Pre-Filter
- Disc Diameter, Sheet Width: 4.78
- Filter Medium Material: UHMWPE
- Thickness: 1880
from Western Analytical Products
"PEEK Polymer, ea." [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our UHMWPE Frit is manufactured from UHMWPE a durable and widely used polymer. It is ideal for use in both general and aqueous-based environments. It has a porosity of 2 µm. [See More]
- Filter Type: Pre-Filter
- Disc Diameter, Sheet Width: 1.65
- Filter Medium Material: UHMWPE
- Thickness: 1651
from Western Analytical Products
"Stainless Steel, 10-pk" [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our UHMWPE Frit is manufactured from UHMWPE a durable and widely used polymer. It is ideal for use in both general and aqueous-based environments. It has a porosity of 2 µm. [See More]
- Filter Type: Pre-Filter
- Disc Diameter, Sheet Width: 2.39
- Filter Medium Material: UHMWPE
- Thickness: 1651
from Western Analytical Products
With A-102 Frit [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our UHMWPE Frit is manufactured from UHMWPE a durable and widely used polymer. It is ideal for use in both general and aqueous-based environments. It has a porosity of 2 µm. [See More]
- Filter Type: Pre-Filter
- Disc Diameter, Sheet Width: 4.83
- Filter Medium Material: UHMWPE
- Thickness: 1880
from Western Analytical Products
"With A-701 PEEK Frit, Biocompatible" [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter with a stem is a Waters Compatible providing the protection your system needs. It is specifically designed to prevent pump and other system component damage. It has a porosity of 10 µm and has a 1/8"ID tubing. [See More]
- Filter Type: Pre-Filter
- Pore Size: 10
from Western Analytical Products
For 1/8 OD tubing with A-520 filter cup [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter comes with a stem and offers optimal protection by filtering solvents which prevents pump cavitation and other system component damage. It is stainless steel, disposable and easy to change without tools. It has a porosity of 10 µm and is for 1/16" ID tubing. It also... [See More]
- Filter Type: Pre-Filter
- Pore Size: 10
from Western Analytical Products
For small-neck (GL-38) bottles [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter offers optimal protection by filtering solvents which prevents pump cavitation and other system component damage. It is stainless steel, disposable and easy to change without tools. It has a porosity of 10 µm and is for 1/4" OD tubing. [See More]
- Filter Type: Pre-Filter
- Pore Size: 10
from Western Analytical Products
With A-331 Frit [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter comes with a stem and offers optimal protection by filtering solvents which prevents pump cavitation and other system component damage. It is stainless steel, disposable and easy to change without tools. It has a porosity of 10 µm and a 1/8" OD tubing. comes with (1)... [See More]
- Filter Type: Pre-Filter
- Pore Size: 10
from Western Analytical Products
for 1/16 OD tubing [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter offers optimal protection by filtering solvents which prevents pump cavitation and other system component damage. It is stainless steel, disposable and easy to change without tools. It has a porosity of 10 µm and is for 1/8" OD tubing. [See More]
- Filter Type: Pre-Filter
- Pore Size: 10
from Western Analytical Products
With OC-802 Frit [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter offers optimal protection by filtering solvents which prevents pump cavitation and other system component damage. It is stainless steel, disposable and easy to change without tools. It has a porosity of 10 µm and is for 5/16" OD tubing. [See More]
- Filter Type: Pre-Filter
- Pore Size: 10
from Western Analytical Products
With A-429 End Fitting [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter offers optimal protection by filtering solvents which prevents pump cavitation and other system component damage. It is stainless steel, disposable and easy to change without tools. It has a porosity of 2 µm and is for 1/8" OD Tubing. It also comes in a 5 - Pack. [See More]
- Filter Type: Pre-Filter
- Pore Size: 2
from Western Analytical Products
For 1/8 OD tubing [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter offers optimal protection by filtering solvents which prevents pump cavitation and other system component damage. It is stainless steel, disposable and easy to change without tools. It has a porosity of 2 µm and is for 1/8" OD Tubing. It comes as a single or in a 5... [See More]
- Filter Type: Pre-Filter
- Pore Size: 2
from Western Analytical Products
"PEEK Polymer, ea." [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter offers optimal protection by filtering solvents which prevents pump cavitation and other system component damage. It is stainless steel, disposable and easy to change without tools. It has a porosity of 20 µm and is for 1/16" ID tubing. [See More]
- Filter Type: Pre-Filter
- Pore Size: 20
from Western Analytical Products
"Stainless Steel, 10-pk" [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter offers optimal protection by filtering solvents which prevents pump cavitation and other system component damage. It is stainless steel, disposable and easy to change without tools. It has a porosity of 20 µm and is for 1/4" OD tubing. [See More]
- Filter Type: Pre-Filter
- Pore Size: 20
from Western Analytical Products
With A-100 Frit [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter offers optimal protection by filtering solvents which prevents pump cavitation and other system component damage. It is stainless steel, disposable and easy to change without tools. It has a porosity of 20 µm and is for 3/16" OD tubing. [See More]
- Filter Type: Pre-Filter
- Pore Size: 20
from Western Analytical Products
With A-101 Frit [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter Kit delivers the protection needed to prevent pump and other system component damage by filtering out particulate matter from the solvent. It has a porosity 10 µm and is for 1/8" OD tubing. Our stainless steel filter kit includes FEP tubing, (5) P-100 and (5) A-220. [See More]
- Filter Type: Pre-Filter
- Pore Size: 10
from Western Analytical Products
"With A-700 PEEK Frit, Biocompatible" [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our Inlet Solvent Filter Kit delivers the protection needed to prevent pump and other system component damage by filtering out particulate matter from the solvent. It has a porosity 2 µm and is for 1/4" OD tubing. It includes FEP tubing, (5) P-100 and (5) A-222. [See More]
- Filter Type: Pre-Filter
- Pore Size: 2
from Western Analytical Products
. High Efficiency Degassing. Continuous Monitoring for Leaks. Smallest Footprint Available. Quiet, Long-Life operation. Two and Four channel models. Designed for HPLC. Systec ® HPLC Vacuum Degassing Systems are high-efficiency inline. modules that quickly and conveniently remove dissolved gases... [See More]
- Filter Type: Pre-Filter
- Hold Up Volume: 480
from IDEX Health & Science
Inlet Solvent Prep Filter provide the protection your system needs. Our Inlet solvent filter with a stem is designed to prevent pump and other system component damage. It has a 10 µm porosity and is for 1/16"OD. [See More]
- Filter Type: Pre-Filter
- Pore Size: 10
from Western Analytical Products
"Stainless Steel, ea." [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Mega Frits are strong and resilient. With a sealing ring made of PCTFE it delivers enhanced sealing properties and stronger chemical resistance. It offers excellent uniform porosity which ensures a longer filtration life. It has a porosity of 2 µm.. [See More]
- Filter Type: Pre-Filter
- Thickness: 1778
- Disc Diameter, Sheet Width: 1.17
- Pore Size: 2
from Western Analytical Products
With A-122 Frit [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
Our NanoFilter Capsule encapsulated filters boasts internal volumes as low as 85nL with the micro-screen and 10nL with the frit disc option. It is specifically designed for use with the M-537 and M-538 Mini MicroFilter Assemblies. It includes a stainless steel Frit. It comes as a single or as a two... [See More]
- Filter Type: Pre-Filter
- Pore Size: 1
from Western Analytical Products
With 2 µm Filter [See More]
- Filter Type: Pre-Filter
from IDEX Health & Science
PEEK Frits are biocompatible and metal free. With a sealing ring made of PEEK it delivers enhanced sealing properties and stronger chemical resistance. It offers excellent uniform porosity which ensures a longer filtration life. It has a porosity of 5 µm. [See More]
- Filter Type: Pre-Filter
- Disc Diameter, Sheet Width: 7.44
- Filter Medium Material: PEEK
- Thickness: 1575
from Western Analytical Products
For 1/8 OD tubing [See More]
- Filter Type: Pre-Filter
- Flow Rate: 0.0106
- Pore Size: 10
from IDEX Health & Science
PEEK Frits are biocompatible and metal free. With a sealing ring made of PCTFE it delivers enhanced sealing properties and stronger chemical resistance. It offers excellent uniform porosity which ensures a longer filtration life. It has a porosity of 10 µm. [See More]
- Filter Type: Pre-Filter
- Thickness: 1829
- Disc Diameter, Sheet Width: 1.17
- Pore Size: 10
from Western Analytical Products
For 1/16 ID tubing [See More]
- Filter Type: Pre-Filter
- Flow Rate: 0.0106
- Pore Size: 10
from IDEX Health & Science
Our Stainless Steel Precolumn Filter is ideal for higher pressure applications and to help prevent particulate contamination. It has a porosity .5 µm and a swept volume of 84uL and comes with the replaceable Frit A-102. [See More]
- Filter Type: Pre-Filter
- Pore Size: 0.5000
from Western Analytical Products
For 1/8 OD tubing [See More]
- Filter Type: Pre-Filter
- Flow Rate: 0.0026
- Pore Size: 2