LPS is dedicated to providing affordable laboratory filtration supplies to meet the needs of researchers and scientists around the world. Our range of products includes high-quality cellulose, glass fiber, paper and other membrane filters, syringe and bottletop filters, thimbles, and systems that are designed to help you achieve accurate and reliable results in your experiments.

Our products are available in various sizes and materials to suit your specific requirements. Whether you are conducting research in a university laboratory, performing testing at a pharmaceutical company, or carrying out experiments in a biotech start-up, we have the laboratory filtration supplies you need to get the job done.  Contact us for assistance in finding the ideal materials for your application.

Filtration

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  1. Nonsterile A83 NanoGFSyringe Filters, 0.5μm, 15mm, PK100
    Manufacturer: I W Tremont
    HydroBlokr™ functions via use of proprietarily designed, multi-layered series of membranes placed within an ultrasonically welded device which creates a check-valve effect when wet. The functional membrane within the series immediately reacts in presence of aqueous solution by stopping and blocking further passage1 . The materials create a highly retentive pore structure which helps protect the user environment2 . The extraordinarily high flow rates compared to other simple hydrophobic barrier filters creates a high-flow, less restrictive path for vacuum and positive pressure to pass. Unlike simple hydrophobic barrier filters, once HydroBlokr™ is wetted it halts operation and locks out further usage until replaced. No further aspiration is possible, thus helping to protect your sample3 and making it plainly obvious the filter has become wet and replacement is necessary. (100 per PK )
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    was $162.57 Special Price $136.44
  2. TCLP Grade Acid Treated, 9.0cm - 50/Pk Binderless glass microfiber filter media, PK50
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 1810-090 Ahlstrom Equivalent: 0250-0900 Environmental Express (CP) Equivalent: FG77090MM (50 per PK )
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    was $109.82 Special Price $85.19
  3. Hydrophobic PTFE membrane, NON-STERILE, 0.80 micron, 142mm diameter, PK25
    Manufacturer: I W Tremont
    MFS/Advantec Equivalent: T080A142C (25 per PK )
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    was $330.58 Special Price $235.14
  4. Nonsterile MultiDensity Syringe Filters, 1.2μm, 25mm, PK100
    Manufacturer: I W Tremont
    HydroBlokr™ functions via use of proprietarily designed, multi-layered series of membranes placed within an ultrasonically welded device which creates a check-valve effect when wet. The functional membrane within the series immediately reacts in presence of aqueous solution by stopping and blocking further passage1 . The materials create a highly retentive pore structure which helps protect the user environment2 . The extraordinarily high flow rates compared to other simple hydrophobic barrier filters creates a high-flow, less restrictive path for vacuum and positive pressure to pass. Unlike simple hydrophobic barrier filters, once HydroBlokr™ is wetted it halts operation and locks out further usage until replaced. No further aspiration is possible, thus helping to protect your sample3 and making it plainly obvious the filter has become wet and replacement is necessary. (100 per PK )
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    was $214.66 Special Price $191.63
  5. High purity CA fibrous protein Syringe Filter, hydrophilic, 1.0μm, 25mm, PK100
    Manufacturer: I W Tremont
    HydroBlokr™ functions via use of proprietarily designed, multi-layered series of membranes placed within an ultrasonically welded device which creates a check-valve effect when wet. The functional membrane within the series immediately reacts in presence of aqueous solution by stopping and blocking further passage1 . The materials create a highly retentive pore structure which helps protect the user environment2 . The extraordinarily high flow rates compared to other simple hydrophobic barrier filters creates a high-flow, less restrictive path for vacuum and positive pressure to pass. Unlike simple hydrophobic barrier filters, once HydroBlokr™ is wetted it halts operation and locks out further usage until replaced. No further aspiration is possible, thus helping to protect your sample3 and making it plainly obvious the filter has become wet and replacement is necessary. (100 per PK )
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    was $317.69 Special Price $283.62
  6. Nonsterile MultiDensity Syringe Filters, 2.7μm, 25mm, PK100
    Manufacturer: I W Tremont
    HydroBlokr™ functions via use of proprietarily designed, multi-layered series of membranes placed within an ultrasonically welded device which creates a check-valve effect when wet. The functional membrane within the series immediately reacts in presence of aqueous solution by stopping and blocking further passage1 . The materials create a highly retentive pore structure which helps protect the user environment2 . The extraordinarily high flow rates compared to other simple hydrophobic barrier filters creates a high-flow, less restrictive path for vacuum and positive pressure to pass. Unlike simple hydrophobic barrier filters, once HydroBlokr™ is wetted it halts operation and locks out further usage until replaced. No further aspiration is possible, thus helping to protect your sample3 and making it plainly obvious the filter has become wet and replacement is necessary. (100 per PK )
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    was $214.66 Special Price $191.63
  7. Nonsterile syringe filter, 4mm diameter, 0.22micron, CA membrane, 200PK, POUCH200
    Manufacturer: I W Tremont
    HydroBlokr™ functions via use of proprietarily designed, multi-layered series of membranes placed within an ultrasonically welded device which creates a check-valve effect when wet. The functional membrane within the series immediately reacts in presence of aqueous solution by stopping and blocking further passage1 . The materials create a highly retentive pore structure which helps protect the user environment2 . The extraordinarily high flow rates compared to other simple hydrophobic barrier filters creates a high-flow, less restrictive path for vacuum and positive pressure to pass. Unlike simple hydrophobic barrier filters, once HydroBlokr™ is wetted it halts operation and locks out further usage until replaced. No further aspiration is possible, thus helping to protect your sample3 and making it plainly obvious the filter has become wet and replacement is necessary. (200 per PK )
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    $260.52
  8. Grade F cut 2.4cm diameter - 100/pk Binderless glass microfiber filter media, PK100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 1825-024 Millipore Equivalent: APFF 024 00 Ahlstrom Equivalent: 1510-0240 MFS/Advantec Equivalent: GF7524MM (100 per PK )
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    was $49.07 Special Price $34.73
  9. Nonsterile PTFE Syringe Filters, 0.45(μm), 25(mm), GF prefilter, 100 pack, POUCH100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 6874-2504 Environmental Express (CP) Equivalent: SF145T (100 per PK )
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    was $329.65 Special Price $262.75
  10. Sterile Nylon Syringe Filters, 0.22(μm), 25(mm), GF prefilter, 100 pack, POUCH100
    Manufacturer: I W Tremont
    HydroBlokr™ functions via use of proprietarily designed, multi-layered series of membranes placed within an ultrasonically welded device which creates a check-valve effect when wet. The functional membrane within the series immediately reacts in presence of aqueous solution by stopping and blocking further passage1 . The materials create a highly retentive pore structure which helps protect the user environment2 . The extraordinarily high flow rates compared to other simple hydrophobic barrier filters creates a high-flow, less restrictive path for vacuum and positive pressure to pass. Unlike simple hydrophobic barrier filters, once HydroBlokr™ is wetted it halts operation and locks out further usage until replaced. No further aspiration is possible, thus helping to protect your sample3 and making it plainly obvious the filter has become wet and replacement is necessary. (100 per PK )
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    was $420.23 Special Price $334.95
  11. Nonsterile MultiDensity Syringe Filters, 1.6μm, 25mm, PK100
    Manufacturer: I W Tremont
    HydroBlokr™ functions via use of proprietarily designed, multi-layered series of membranes placed within an ultrasonically welded device which creates a check-valve effect when wet. The functional membrane within the series immediately reacts in presence of aqueous solution by stopping and blocking further passage1 . The materials create a highly retentive pore structure which helps protect the user environment2 . The extraordinarily high flow rates compared to other simple hydrophobic barrier filters creates a high-flow, less restrictive path for vacuum and positive pressure to pass. Unlike simple hydrophobic barrier filters, once HydroBlokr™ is wetted it halts operation and locks out further usage until replaced. No further aspiration is possible, thus helping to protect your sample3 and making it plainly obvious the filter has become wet and replacement is necessary. (100 per PK )
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    was $214.66 Special Price $191.63
  12. Grade F cut 2.5cm diameter - 100/pk Binderless glass microfiber filter media, PK100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 1825-025 Millipore Equivalent: APFF 025 00 Ahlstrom Equivalent: 1510-0250 MFS/Advantec Equivalent: GF7525MM Sartorius: FT-3-1105-025 (100 per PK )
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    was $49.07 Special Price $34.73
  13. High purity CA fibrous protein Syringe Filter, hydrophilic, 1.0μm, 15mm, PK100
    Manufacturer: I W Tremont
    HydroBlokr™ functions via use of proprietarily designed, multi-layered series of membranes placed within an ultrasonically welded device which creates a check-valve effect when wet. The functional membrane within the series immediately reacts in presence of aqueous solution by stopping and blocking further passage1 . The materials create a highly retentive pore structure which helps protect the user environment2 . The extraordinarily high flow rates compared to other simple hydrophobic barrier filters creates a high-flow, less restrictive path for vacuum and positive pressure to pass. Unlike simple hydrophobic barrier filters, once HydroBlokr™ is wetted it halts operation and locks out further usage until replaced. No further aspiration is possible, thus helping to protect your sample3 and making it plainly obvious the filter has become wet and replacement is necessary. (100 per PK )
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    was $266.17 Special Price $237.64
  14. Extraction thimbles glass microfibers, Format 43x123 mm (Inner diameter x Height) pack of 25, PK25
    Manufacturer: I W Tremont
    MFS/Advantec Equivalent: N086R43X123MM (25 per PK )
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    was $438.92 Special Price $416.29
  15. Nonsterile PES Syringe Filters, 0.45(μm), 13(mm), 100 pack, POUCH100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 6782-1304 (100 per PK )
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    was $138.42 Special Price $110.17
  16. Nonsterile PVDF Syringe Filters, 0.22(μm), 13(mm), 100 pack, POUCH100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 6779-1302 Pall Equivalent: 4455 Millipore Equivalent: SLGV013NL (100 per PK )
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    was $173.55 Special Price $110.17
  17. Quartz microfiber, 11.0cm diameter, high purity (SiO2) microfiber filters , binderless, 1000°C+ temperature - 25/pk, PK100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 1851-110 Pall Equivalent: 7250 MFS/Advantec Equivalent: QR100110MM Environmental Express (CP) Equivalent: FQ8X10-50 (100 per PK )
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    was $111.57 Special Price $96.18
  18. Heat Treated, ultra low metals, Quartz microfiber, 10.10cm diameter, high purity (SiO2) microfiber filters , binderless, 1150°C+ temperature - 100/pk, PK100
    Manufacturer: I W Tremont
    Glass microfiber filters offered in this product range are produced from 100% borosilicate glass microfiber without the use of binders or strengthening agents. These filters offer many advantages in a wide range of analytical applications. The fibers used to manufacture these depth filters are smooth and uniform. This permits their characteristically high flow rates while allowing retention of exceptionally small particles and high load capacity. These characteristics are particularly important in applications involving high concentrations of particulate or gelatinous substances. In choosing the appropriate filter for a specific application, careful consideration should be given to the physical form and concentration of the material to be captured by the filter. (100 per PK )
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    was $518.99 Special Price $474.06
  19. Grade TSS cut to 4.7cm diameter - 100/pk Binderless glass microfiber for determination of total suspended solids, PK100
    Manufacturer: I W Tremont
    Pall Equivalent: 61631 Ahlstrom Equivalent: 1610-0470 Sartorius: FT-3-1106-047 Environmental Express (CP) Equivalent: FG85043MM (100 per PK )
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    was $20.63 Special Price $19.38
  20. TCLP Grade Acid Treated, 14.2cm - 50/Pk Binderless glass microfiber filter media, PK50
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 1810-142 Ahlstrom Equivalent: 0250-1420 Environmental Express (CP) Equivalent: FG77142MM (50 per PK )
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    was $218.83 Special Price $202.80
  21. Grade A cut 5.5cm diameter - 100/pk Binderless glass microfiber filter media, PK100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 1820-055 Millipore Equivalent: APFA 055 00 Ahlstrom Equivalent: 1110-0550 MFS/Advantec Equivalent: GA5555MM Sartorius: FT-3-1101-055 (100 per PK )
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    was $41.96 Special Price $29.99
  22. Sterile PVDF Syringe Filters, 0.45(μm), 25(mm), 100 pack, POUCH100
    Manufacturer: I W Tremont
    HydroBlokr™ functions via use of proprietarily designed, multi-layered series of membranes placed within an ultrasonically welded device which creates a check-valve effect when wet. The functional membrane within the series immediately reacts in presence of aqueous solution by stopping and blocking further passage1 . The materials create a highly retentive pore structure which helps protect the user environment2 . The extraordinarily high flow rates compared to other simple hydrophobic barrier filters creates a high-flow, less restrictive path for vacuum and positive pressure to pass. Unlike simple hydrophobic barrier filters, once HydroBlokr™ is wetted it halts operation and locks out further usage until replaced. No further aspiration is possible, thus helping to protect your sample3 and making it plainly obvious the filter has become wet and replacement is necessary. (100 per PK )
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    was $307.48 Special Price $245.07
  23. Quartz microfiber, 2.1cm diameter, high purity (SiO2) microfiber filters , binderless, 1000°C+ temperature - 100/pk, PK100
    Manufacturer: I W Tremont
    MFS/Advantec Equivalent: QR10021MM (100 per PK )
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    was $56.46 Special Price $50.05
  24. Nonsterile PES Syringe Filters, 0.45(μm), 13(mm), GF prefilter, 100 pack, POUCH100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 6876-1304 (100 per PK )
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    was $263.82 Special Price $210.26
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