At LPS, we understand the importance of reliable and affordable microbiological supply solutions for our customers in varied environments, from research laboratories to medical laboratories and beyond. We provide procurement of a wide range of products, including dehydrated and prepared media, both bottled and plated, organisms, and supplies such as inoculating loops and needles.

Please also see our collection of other Life Science products for a complete offering of whatever you may need for your important work.  We're always here if you have questions or need assistance - email or call us!

When ordering media, decide between prepared and dehydrated forms. Prepared plates (15 x 100 mm, plus 15 x 65 mm contact plates for surface monitoring), tubes and bottled broths save preparation time but have shorter shelf lives and usually need refrigeration, so order quantities you can use before the expiration date. Dehydrated media store longer but must be weighed, prepared and sterilized in house. Look for USP-designated media when your testing follows compendial methods, and pair them with quality control organisms such as ATCC-derived strains in DuoPak format. Sterile plastic inoculating loops come in calibrated volumes such as 10 µl.

Microbiology: common questions

What is a bacterial freezing kit?

A bacterial freezing or preservation kit usually contains cryovials prefilled with a cryoprotective broth, often with porous beads. You add a fresh culture, let the organisms attach to the beads, remove the excess liquid and freeze the vial, typically at -70°C or colder. Later, a single bead can be removed to start a culture without thawing the whole vial. Follow the kit maker's instructions for your organism.

What are contact plates used for?

Contact plates are small plates filled so the agar forms a raised, convex surface. They are pressed directly onto flat surfaces such as benches, equipment or gloves to sample microorganisms for environmental monitoring. Media for this use often contain neutralizers, such as lecithin and polysorbate (Tween), to counteract disinfectant residues picked up from the surface.

What are dilution blanks?

Dilution blanks are tubes or bottles prefilled with a measured volume of sterile diluent, such as buffered water or peptone water. They are used for serial dilutions of samples before plating or counting, so each step has an accurate, sterile volume without preparing and sterilizing the diluent in house.

Can prepared media be returned?

Returns are accepted within 30 days by mail, with the customer paying return shipping, but refrigerated or frozen items, sterile items and hazardous items cannot be returned. Most prepared plates and tubes fall into those groups, so check quantities and expiration needs before ordering. Many items ship directly from the manufacturer, so lead times vary by item.

Microbiology

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  1. M.canis, MBL ATCC 36299, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    M.canis, MBL ATCC 36299, DuoPak EA1 (1 per EA )
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    was $102.54 Special Price $101.34
  2. S.warneri, MBL ATCC 49454, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    S.warneri, MBL ATCC 49454, DuoPak EA1 (1 per EA )
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    was $81.42 Special Price $80.47
  3. S.multivorum, MBL ATCC 35656, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    S.multivorum, MBL ATCC 35656, DuoPak EA1 (1 per EA )
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    was $81.42 Special Price $80.47
  4. Y.lipolytica, MBL ATCC 9773, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    Y.lipolytica, MBL ATCC 9773, DuoPak EA1 (1 per EA )
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    was $90.03 Special Price $88.97
  5. M.catarrhalis, MBL ATCC 25238, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    M.catarrhalis, MBL ATCC 25238, DuoPak EA1 (1 per EA )
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    was $81.42 Special Price $80.47
  6. B.atrophaeus, MBL ATCC 9372, LyfoDisk EA1
    Manufacturer: Hardy Diagnostics
    B.atrophaeus, MBL ATCC 9372, LyfoDisk EA1 (1 per EA )
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    was $175.58 Special Price $173.51
  7. K.pneumoniae, MBL ATCC 33495, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    K.pneumoniae, MBL ATCC 33495, DuoPak EA1 (1 per EA )
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    was $81.42 Special Price $80.47
  8. P.micra, MBL ATCC 33270, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    P.micra, MBL ATCC 33270, DuoPak EA1 (1 per EA )
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    was $90.03 Special Price $88.97
  9. S.equisimilis, MBL ATCC 35666, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    S.equisimilis, MBL ATCC 35666, DuoPak EA1 (1 per EA )
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    was $102.54 Special Price $101.34
  10. E.faecium, MBL ATCC 35667, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    E.faecium, MBL ATCC 35667, DuoPak EA1 (1 per EA )
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    was $81.42 Special Price $80.47
  11. S.mutans, MBL ATCC 35668, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    S.mutans, MBL ATCC 35668, DuoPak EA1 (1 per EA )
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    was $81.42 Special Price $80.47
  12. S.pyogenes, MBL ATCC 12384, KwikStik EA1
    Manufacturer: Hardy Diagnostics
    S.pyogenes, MBL ATCC 12384, KwikStik EA1 (1 per EA )
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    was $189.15 Special Price $186.92
  13. S.pyogenes, MBL ATCC 12384, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    S.pyogenes, MBL ATCC 12384, DuoPak EA1 (1 per EA )
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    was $71.04 Special Price $70.20
  14. L. lactis, MBL ATCC 49032, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    L. lactis, MBL ATCC 49032, DuoPak EA1 (1 per EA )
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    was $90.03 Special Price $88.97
  15. C.albicans, MBL ATCC 66027, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    C.albicans, MBL ATCC 66027, DuoPak EA1 (1 per EA )
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    was $90.03 Special Price $88.97
  16. C.kefyr, MBL ATCC 66028, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    C.kefyr, MBL ATCC 66028, DuoPak EA1 (1 per EA )
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    was $90.03 Special Price $88.97
  17. M.gordonae, MBL ATCC 14470, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    M.gordonae, MBL ATCC 14470, DuoPak EA1 (1 per EA )
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    was $102.54 Special Price $101.34
  18. B.cereus, MBL ATCC 13061, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    B.cereus, MBL ATCC 13061, DuoPak EA1 (1 per EA )
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    was $71.04 Special Price $70.20
  19. Cryptosporidium spec, 1ml MBL, Parasite Suspension EA1
    SKU: FP02-EA
    Manufacturer: Hardy Diagnostics
    Cryptosporidium spec, 1ml MBL, Parasite Suspension EA1 (1 per EA)
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    was $115.49 Special Price $99.12
  20. Rifampicin-Resistant Neg Control Panel Inactivated Pellet, MBL, QC Sets and Panels EA1
    SKU: 8238-EA
    Manufacturer: Hardy Diagnostics
    Rifampicin-Resistant Neg Control Panel Inactivated Pellet, MBL, QC Sets and Panels EA1 (1 per EA)
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    $124.14
  21. S.aureus, MBL ATCC 29213, DuoPak EA1
    Manufacturer: Hardy Diagnostics
    S.aureus, MBL ATCC 29213, DuoPak EA1 (1 per EA )
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    was $59.94 Special Price $59.23
  22. UVM Broth, 225ml; HDx, 500ml PC bottle
    SKU: U153-PK
    Manufacturer: Hardy Diagnostics
    UVM Broth, 225ml; HDx, 500ml PC bottle (10 per PK)
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    was $218.09 Special Price $174.93
  23. EZ-Accu Shot Geobacillus stearothermophilus derived from ATCC 7953
    Manufacturer: Hardy Diagnostics
    EZ-Accu Shot Geobacillus stearothermophilus derived from ATCC 7953 (1 per EA )
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    was $378.43 Special Price $373.97
  24. Pseudomonas protegens (G) derived from ATCC® 17386™, EZ-Accu Shot
    Manufacturer: Hardy Diagnostics
    Pseudomonas protegens (G) derived from ATCC® 17386™, EZ-Accu Shot (1 per EA )
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    $369.75
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