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. YPD Agar, 333ml Capsules, 1 Kilogram
    Manufacturer: Research Products International
    Dimensions: 5.00 x 10.00 x 5.00 Weight: 2.8 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $242.05
  2. Super Broth, 20 Gram Buffered Capsules, 5 Kilograms CAS# 91079-40-2, 8013-01-2, 7647-14-5
    Manufacturer: Research Products International
    Dimensions: 10.00 x 7.50 x 10.00, Weight: 12.5, Cas#: 91079-40-2, 8013-01-2, 7647-14-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $1,053.85
  3. Tryptone, 1 Gram Capsules, 1 Kilogram CAS# 91079-40-2
    Manufacturer: Research Products International
    Dimensions: 5.00 x 10.00 x 5.00, Weight: 3.2, Cas#: 91079-40-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $285.20
  4. LB Agar, Low Salt Formula, Granulated, Lennox L Agar, 100 Grams CAS# 91079-40-2, 8013-01-2, 7647-14-5, 9002-18-0
    Manufacturer: Research Products International
    Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 91079-40-2, 8013-01-2, 7647-14-5, 9002-18-0 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $50.80
  5. Luria Broth, High Salt Formula, Powder, Miller's LB Broth, 1 Kilogram CAS# 91079-40-2, 8013-01-2, 7647-14-5
    Manufacturer: Research Products International
    Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.4, Cas#: 91079-40-2, 8013-01-2, 7647-14-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $132.80
  6. YPD Broth, 1 Gram Capsules, 1 Kilogram
    Manufacturer: Research Products International
    Dimensions: 5.00 x 10.00 x 5.00 Weight: 3.2 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $328.60
  7. 2XYT Broth, Granulated, 2 Kilograms CAS# 91079-40-2; 8013-01-2; 7647-14-5
    Manufacturer: Research Products International
    Dimensions: 4.88 x 6.00 x 4.88, Weight: 4.5, Cas#: 91079-40-2; 8013-01-2; 7647-14-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $329.75
  8. Trypto Soy Broth, 1 Kilogram
    Manufacturer: Research Products International
    Dimensions: 4.88 x 6.00 x 4.88 Weight: 2.41 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $161.75
  9. Agar, High Gel Strength, Powder, 10 Kilograms CAS# 9002-18-0
    Manufacturer: Research Products International
    Dimensions: 10.00 x 11.25 x 10.00, Weight: 24, Cas#: 9002-18-0 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $1,851.50
  10. SOB Broth, 36 x 500ml Capsules, 500 Grams
    Manufacturer: Research Products International
    Dimensions: 4.88 x 6.00 x 4.88 Weight: 1.31 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $149.55
  11. Malt Extract Agar, 2 Kilograms CAS# 8002-48-0
    Manufacturer: Research Products International
    Dimensions: 8.13 x 7.25 x 8.13, Weight: 5.2, Cas#: 8002-48-0 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $472.75
  12. NZCYM Broth, 1 Kilogram
    Manufacturer: Research Products International
    Dimensions: 4.88 x 6.00 x 4.88 Weight: 2.4 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $144.75
  13. Columbia CNA; HDx,15x100mm plt,100/BX R
    Manufacturer: Hardy Diagnostics
    Columbia CNA HDx,15x100mm plt,100/BX RPK100 (100 per PK)
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    was $123.93 Special Price $99.40
  14. YPD Agar, 1 Gram Capsules, 1 Kilogram
    Manufacturer: Research Products International
    Dimensions: 5.00 x 10.00 x 5.00 Weight: 3.2 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $365.50
  15. TSB, USP, 90ml; HDx, 8oz wide mouth jar
    SKU: U133-PK
    Manufacturer: Hardy Diagnostics
    Tryptic Soy Broth (TSB), USP, 90ml fill, 180ml polycarbonate wide mouth jar, order by the package of 12, by Hardy Diagnostics (Tryptic Soy Broth) For sterility testing and cultivation of microorganisms. Also known as Soybean-Casein Digest Broth, USP. Our bottle features: Heavy duty Bottles are tough and sturdy to reduce breakage Leak-Proof Easy-to-remove, perforated, shrink wrap ensures product integrity Optically clear Bottles are made of clarified polypropylene for clear viewing. Comparable to: BD 257488 (12 per PK)
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    was $111.40 Special Price $89.36
  16. Trypto Soy Agar, 2 Kilograms CAS# 91079-40-2; 91079-46-8; 7647-14-5; 9002-18-0
    Manufacturer: Research Products International
    Dimensions: 8.13 x 7.25 x 8.13, Weight: 5.2, Cas#: 91079-40-2; 91079-46-8; 7647-14-5; 9002-18-0 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $373.15
  17. Luria Broth 1 Gram Buffered Capsules [Miller's LB Broth], 2.5 Kilograms
    Manufacturer: Research Products International
    Dimensions: 10.00 x 7.50 x 10.00 Weight: 8.6 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $578.30
  18. Lysine Iron Agar(LIA) Slt; HDx, 16x125mm tube R
    SKU: L25-PK
    Manufacturer: Hardy Diagnostics
    Lysine Iron Agar(LIA) Slt; HDx, 16x125mm tube R (20 per PK)
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    was $55.51 Special Price $44.52
  19. Lactobacilli MRS Broth; HDx, 500ml PC bottle R
    SKU: U203-PK
    Manufacturer: Hardy Diagnostics
    Lactobacilli MRS Broth, 500ml fill, 500ml polycarbonate bottle, order by the package of 10, by Hardy Diagnostics For the isolation and cultivation of Lactobacillus species. (10 per PK)
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    was $315.13 Special Price $252.76
  20. OGYE Agar; HDx, 15x100mm plt 10/pk R
    SKU: W19-PK
    Manufacturer: Hardy Diagnostics
    OGYE Agar, 15x100mm monoplate, 26ml fill, by Hardy Diagnostics...W19 Minimum Order 20 packs of 10 For the detection and isolation of yeasts and molds from foods. (10 per PK)
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    was $58.14 Special Price $46.62
  21. MultiPak A; HDx, 15x100mm plt 3/pk *
    Manufacturer: Hardy Diagnostics
    AnaeroGro™ Brucella Agar with Hemin and Vitamin K is recommended for use in the primary isolation, quantitation, and partial identification of obligately anaerobic microorganisms from clinical specimens. The medium is also suitable for the growth of aerobic and microaerophilic bacteria when incubated under the appropriate conditions. Anaerobic PEA (Phenylethyl Alcohol) Agar is recommended for use as an enriched and selective medium for the cultivation and selective isolation of gram-positive and negative obligate anaerobic bacteria. It is useful in isolating obligate anaerobes from mixed flora, by inhibiting gram-negative facultative anaerobes and the control of swarming organisms. Bacteroides Bile Esculin Agar is an enriched, selective, and differential medium recommended for the rapid isolation and presumptive identification of obligately anaerobic gram-negative bacilli of the Bacteroides fragilis group Bilophila spp. LKV (Laked Blood with Kanamycin and Vancomycin) Agar is recommended for use in the selective isolation and partial identification of obligately anaerobic gram-negative bacilli, such as Prevotella spp. and Bacteroides spp. (1 per EA)
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    was $11.46 Special Price $9.19
  22. E.coli, MBL ATCC 8739, KwikStik EA1
    Manufacturer: Hardy Diagnostics
    E.coli, MBL ATCC 8739, KwikStik EA1 (1 per EA )
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    was $220.31 Special Price $217.72
  23. Clostridium sporogenes derived from ATCC® 19404™
    Manufacturer: Hardy Diagnostics
    Clostridium sporogenes derived from ATCC® 19404™ (1 per EA )
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    $385.09
  24. E.coli, MBL ATCC 35421, KwikStik EA1
    Manufacturer: Hardy Diagnostics
    E.coli, MBL ATCC 35421, KwikStik EA1 (1 per EA )
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    was $220.31 Special Price $217.72
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