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. Grade C cut 7.0cm diameter - 100/pk Binderless glass microfiber filter media, PK100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 1822-070 Millipore Equivalent: APFC 070 00 Ahlstrom Equivalent: 1310-0700 MFS/Advantec Equivalent: GC5070MM Sartorius: FT-3-1103-070 (100 per PK )
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    was $84.55 Special Price $38.26
  2. Grade A-E cut 3.7cm diameter - 100/pk Binderless glass microfiber filter media, PK100
    Manufacturer: I W Tremont
    Pall Equivalent: 61652 (100 per PK )
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    was $28.98 Special Price $24.48
  3. Nonsterile PVDF, 0.22 (µm), 17 (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 $170.93 Special Price $136.04
  4. Sterile PTFE Syringe Filters, 0.22(μm), 13(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 $320.65 Special Price $255.57
  5. Nonsterile PVDF, 0.45 (µm), 17 (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 $170.93 Special Price $136.04
  6. Grade D cut 5.5cm diameter - 100/pk Binderless glass microfiber filter media, PK100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 1823-055 Millipore Equivalent: APFD 055 00 Ahlstrom Equivalent: 1410-0550 (100 per PK )
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    was $44.40 Special Price $40.57
  7. Nonsterile PTFE, 0.22 (µm), 30 (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 $230.87 Special Price $183.74
  8. Nonsterile Nylon Syringe Filters, 0.22(μm), 25(mm), GF prefilter, 100 pack, POUCH100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 6870-2502 Sartorius: 1784B----------Q Environmental Express (CP) Equivalent: SF120N (100 per PK )
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    was $329.65 Special Price $262.75
  9. Grade E cut 5.5cm diameter - 100/pk Binderless glass microfiber filter media, PK100
    Manufacturer: I W Tremont
    Ahlstrom Equivalent: 1610-0550 MFS/Advantec Equivalent: GC5055MM (100 per PK )
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    was $30.42 Special Price $29.32
  10. Grade F cut 2.1cm diameter - 100/pk Binderless glass microfiber filter media, PK100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 1825-021 Millipore Equivalent: APFF 021 00 Ahlstrom Equivalent: 1510-0210 MFS/Advantec Equivalent: GF7521MM (100 per PK )
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    was $46.92 Special Price $33.18
  11. Nonsterile Nylon Syringe Filters, 0.45(μm), 25(mm), GF prefilter, 100 pack, POUCH100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 6870-2504 Pall Equivalent: 4549 Millipore Equivalent: SLHNM25NS Sartorius: 1784C----------Q Environmental Express (CP) Equivalent: SF145N (100 per PK )
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    was $329.65 Special Price $262.75
  12. Grade E cut 2.1cm diameter - 100/pk Binderless glass microfiber filter media, PK100
    Manufacturer: I W Tremont
    Ahlstrom Equivalent: 1610-0210 MFS/Advantec Equivalent: GC5021MM (100 per PK )
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    was $18.05 Special Price $16.46
  13. Nonsterile PES, 0.45 (µm), 30 (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 $230.87 Special Price $183.74
  14. Tri-Layer PP/GF prefilter Nonsterile PVDF Syringe Filters, Diameter 25mm, Porosity 0.22µm, 100 /pack, POUCH100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 6872-2502 (100 per PK )
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    was $382.70 Special Price $336.56
  15. Glass Fiber Filter, Diameter 90 mm, Preweighed for Standard Methods TSS procedure, PK100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 9907-090 Environmental Express (CP) Equivalent: F93490MM (100 per PK )
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    $224.82
  16. Nonsterile PTFE Syringe Filters, 0.22(μm), 13(mm), GF prefilter, 100 pack, POUCH100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 6874-1302 (100 per PK )
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    was $263.82 Special Price $210.26
  17. Grade B cut 4.25cm diameter - 100/pk Binderless glass microfiber filter media, PK100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 1821-042 Millipore Equivalent: APFB 042 00 Ahlstrom Equivalent: 1210-0425 MFS/Advantec Equivalent: GB14042.5MM (100 per PK )
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    was $50.23 Special Price $45.87
  18. Sterile Nylon Syringe Filters, 0.22(μm), 13(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 )
    Learn More
    was $320.65 Special Price $255.57
  19. Grade A-E cut 2.5cm diameter - 100/pk Binderless glass microfiber filter media, PK100
    Manufacturer: I W Tremont
    Pall Equivalent: 65475 (100 per PK )
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    was $23.86 Special Price $21.15
  20. Nonsterile Nylon Syringe Filters, 0.22(μm), 13(mm), GF prefilter, 100 pack , POUCH100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 6870-1302 (100 per PK )
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    was $263.82 Special Price $210.26
  21. Nonsterile PVDF Syringe Filters, 0.45(μm), 25(mm), GF prefilter, 100 pack, POUCH100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 687202504 Millipore Equivalent: SLHVM25NS (100 per PK )
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    was $329.65 Special Price $262.75
  22. Nonsterile PVDF Syringe Filters, 0.22(μm), 25(mm), GF prefilter, 100 pack, POUCH100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 6872-2502 (100 per PK )
    Learn More
    was $329.65 Special Price $262.75
  23. Sterile PVDF Syringe Filters, 0.45(μm), 13(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 )
    Learn More
    was $320.65 Special Price $255.57
  24. Grade C cut 4.25cm diameter - 100/pk Binderless glass microfiber filter media, PK100
    Manufacturer: I W Tremont
    Cytiva/Whatman Equivalent: 1822-042 Millipore Equivalent: APFC 042 00 Ahlstrom Equivalent: 1310-0425 MFS/Advantec Equivalent: GC5042.5MM (100 per PK )
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    was $46.82 Special Price $21.18
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