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. Tryptone, Powder, 1 Kilogram CAS# 91079-40-2
    Manufacturer: Research Products International
    Dimensions: 4.88 x 7.25 x 4.88, Weight: 2.42, Cas#: 91079-40-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $149.55
  2. SuperSnap, ATP, Hygiena, R EA/ 100/BX
    Manufacturer: Hardy Diagnostics
    SuperSnap, ATP, Hygiena, R EA/ 100/BX (1 per EA)
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    was $418.61 Special Price $342.84
  3. BHI Agar, Brain Heart Infusion Agar, 1 Kilogram
    Manufacturer: Research Products International
    Mol. Wt: Common Name: Brain Heart Infusion Agar Formula: Dimensions: 4.88 x 7.25 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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    $275.55
  4. FB Broth, 10ml; HDx, 16x125mm tube R
    SKU: K31-PK
    Manufacturer: Hardy Diagnostics
    FB Broth, for fastidious bacteria, 10ml, 16x125mm tube, order by the package of 20, by Hardy Diagnostics (Fastidious Bacteria Broth) For the enriched cultivation of neisseria, haemophilus, streptococcus, corynebacteria and other fastidious bacteria from clinical specimens (20 per PK)
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    was $88.20 Special Price $70.75
  5. Motility w/TTC Medium; HDx, 16x100mm tube
    SKU: Q11-PK
    Manufacturer: Hardy Diagnostics
    Motility with TTC (Tetrazolium growth indicator) Medium, 8ml, 16x100mm tube, order by the package of 20, by Hardy Diagnostics For the determination of motility in gram negative bacteria. Contains TTC growth indicator. Comparable to: BD 297921 (20 per PK)
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    was $75.45 Special Price $60.52
  6. Mycoplasma orale derived from NCTC 10112, Enumerated Mycoplasma
    Manufacturer: Hardy Diagnostics
    Mycoplasma orale derived from NCTC 10112, Enumerated Mycoplasma (1 per EA )
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    was $395.71 Special Price $391.06
  7. EZ-Accu Shot Clostridium sporogenes derived from ATCC 19404
    Manufacturer: Hardy Diagnostics
    EZ-Accu Shot Clostridium sporogenes derived from ATCC 19404 (1 per EA )
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    was $378.43 Special Price $373.97
  8. PC Agar; HDx, 15x100mm plate R
    SKU: G48-PK
    Manufacturer: Hardy Diagnostics
    For the selective isolation of Burkholderia (Pseudomonas) cepacia. Comparable to: Remel R01709 (10 per PK)
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    was $45.81 Special Price $36.75
  9. Potato Dextrose,USP,Slant; HDx, 20x125mm tube
    SKU: L90-PK
    Manufacturer: Hardy Diagnostics
    Potato Dextrose Agar Slant, USP, 10ml, 20x125mm tube, order by the package of 20, by Hardy Diagnostics For the cultivation of yeasts and molds. (20 per PK)
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    was $85.18 Special Price $68.32
  10. E.coli, O157:H7, MBL ATCC 35150, Epower EA1
    Manufacturer: Hardy Diagnostics
    E.coli, O157:H7, MBL ATCC 35150, Epower EA1 (1 per EA )
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    $398.25
  11. Tryptone, 1 Gram Capsules, 500 Grams CAS# 91079-40-2
    Manufacturer: Research Products International
    Dimensions: 5.00 x 6.00 x 5.00, Weight: 1.5, Cas#: 91079-40-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $149.55
  12. YPD Agar, 1 Kilogram
    Manufacturer: Research Products International
    Dimensions: 4.88 x 7.25 x 4.88 Weight: 2.42 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $198.65
  13. Brucella Broth, 1ml; HDx, 13x100mm tube R
    SKU: R18-PK
    Manufacturer: Hardy Diagnostics
    Brucella Broth, 13x100mm tube, 1ml, optically clear, glass tube, order by the package of 20, by Hardy Diagnostics MINIMUM ORDER: 5 PACKS Hardy Diagnostics Brucella Broth is recommended for use as a general purpose growth media for the isolation, cultivation, and differentiation of a variety of fastidious organisms, such as Streptococcus and Brucella spp. in clinical and food samples. Comparable to: Remel R060320 (20 per PK)
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    was $108.16 Special Price $86.76
  14. Burkholderia multivorans derived from ATCC® BAA-247™ , Epower
    Manufacturer: Hardy Diagnostics
    Burkholderia multivorans derived from ATCC® BAA-247™ , Epower (1 per EA )
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    $349.63
  15. Letheen Agar, Deep 18ml; HDx, 20x125mm tube R
    SKU: Q18-PK
    Manufacturer: Hardy Diagnostics
    Letheen Agar Deep, 18ml, 20x125mm pour tube, order by the package of 20, by Hardy Diagnostics For the detection of bactericidal activity of quaternary ammonium compounds. (20 per PK)
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    was $77.35 Special Price $62.03
  16. HardyCHROM SS NoPRO; HDx, 15x100mm plt 10/pk R
    SKU: G327-PK
    Manufacturer: Hardy Diagnostics
    HardyCHROM SS NoPRO; HDx, 15x100mm plt 10/pk R (10 per PK)
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    was $32.43 Special Price $26.02
  17. Alkaline Peptone Water; HDx, 16x125mm tube
    SKU: K03-PK
    Manufacturer: Hardy Diagnostics
    Alkaline Peptone Water; HDx, 16x125mm tube (20 per PK)
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    was $105.85 Special Price $84.90
  18. Thio w/o Ind., USP, 100ml; HDx, 4oz glass bottle
    SKU: U43-PK
    Manufacturer: Hardy Diagnostics
    Thioglycollate without indicator, USP, 100ml, 4 ounce glass bottle, order by the package of 20, by Hardy Diagnostics (Thioglycollate without Indicator). For the cultivation of anaerobic bacteria. (20 per PK)
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    was $850.06 Special Price $681.82
  19. Todd Hewitt Broth, 5ml; HDx, 13x100mm glass
    SKU: K79-PK
    Manufacturer: Hardy Diagnostics
    Todd Hewitt Broth, 5ml, 13x100mm glass tube, optically clear, glass tube, order by the package of 20, by Hardy Diagnostics For the cultivation of Streptococcus spp. for serological typing Comparable to: Remel R064812 (20 per PK)
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    was $81.11 Special Price $65.06
  20. E.coli O111:H8, MBL CDC 2010C-3114, KwikStik EA1
    Manufacturer: Hardy Diagnostics
    E.coli O111:H8, MBL CDC 2010C-3114, KwikStik EA1 (1 per EA )
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    was $329.28 Special Price $325.41
  21. Bacillus Cereus Sel Agar; HDx, 15x100mm plate R
    SKU: G156-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 10 packs A selective medium which detects small numbers of Bacillus cereus cells and spores in the presence of large numbers of other contaminating organisms. (10 per PK)
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    was $79.28 Special Price $63.59
  22. Luria Broth, High Salt Formula, Powder, Miller's LB Broth, 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: 12.4, 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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    $578.30
  23. Fluid D, USP, 500ml; HDx,500ml PC Btl w/septum
    SKU: U215-PK
    Manufacturer: Hardy Diagnostics
    Fluid D, USP, 500ml fill, 500ml polycarbonate bottle, with septum screw cap, order by the package of 10, by Hardy Diagnostics A rinsing and diluting fluid for use in USP testing protocols. pH 7.1. Contains peptic digest of animal tissue and polysorbate 80. Hardy Diagnostics' sterility media and rinse solutions are manufactured in an ISO 13485 environmentally controlled production center. Each lot is certified for pH, sterility and growth promotion using ATCC® strains specified by the USP. Our approach to manufacturing ensures all sterility media and rinse fluids provide the highest level of clarity for improved reading accuracy, thus significantly reducing the risk of incorrect interpretation and false results. Comparable to: BD 210049 (10 per PK)
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    was $250.75 Special Price $201.12
  24. 2XYT Broth, Powder, 1 Kilogram CAS# 91079-40-2; 8013-01-2; 7647-14-5
    Manufacturer: Research Products International
    Dimensions: 4.88 x 7.25 x 4.88, Weight: 2.42, 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
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