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. HardyCHROMTM MRSA (RSR); HDx, 15x100mm plt 10/pk R
    Manufacturer: Hardy Diagnostics
    Bright color development within 24 hours! HardyCHROM™ MRSA is a selective and differential culture medium that facilitates the isolation and identification of methicillin resistant Staphylococcus aureus (MRSA) to aid in the prevention and control of MRSA infections in health care settings. The test is performed on anterior nares swabs from patients and healthcare workers to screen for MRSA colonization. This new chromogenic medium simplifies the identification of MRSA infections. MRSA strains grown in the presence of chromogenic substrates produce deep pink to magenta colonies. Color development is bright, distinct and easy to read. Features and Benefits: Distinct color change read-out Bright color development Economically priced to save you money! Compatible with automation Read-out at 24 hours (10 per PK)
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    was $34.71 Special Price $27.84
  2. MultiPak B; 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. AnaeroGRO™ 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. AnaeroGRO™ 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 $11.47 Special Price $9.20
  3. LevGo® smartPick™ Wooden Inoculation Pick, large
    Manufacturer: LevGo
    6in, 152.4mm, Made in USA (500 per CS )
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    was $1,095.80 Special Price $753.57
  4. Letheen/MacConkey Agar; HDx, 15x100mm biplate R
    SKU: J110-PK
    Manufacturer: Hardy Diagnostics
    For enumeration of microorganisms and evaluation of disinfectants in cosmetic products. (10 per PK)
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    was $34.09 Special Price $27.34
  5. Buffered Peptone Water; HDx,16x125mm tube,10ml
    SKU: K195-PK
    Manufacturer: Hardy Diagnostics
    Buffered Peptone Water, 10ml fill, 16x125mm tube, order by the package of 20, by Hardy Diagnostics A preenrichment used for increasing the recovery of injured Salmonella spp. from food and other specimens prior to selective enrichment and isolation. (20 per PK)
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    was $105.87 Special Price $84.92
  6. Tergitol 7 Agar w/TTC; HDx, 15x100mm plate R
    SKU: G58-PK
    Manufacturer: Hardy Diagnostics
    For the isolation and differentiation of gram negative bacilli. (10 per PK)
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    was $18.16 Special Price $14.57
  7. Inoculation Loop, Rigid, 10uL with Needle, with Calibration Certificate, STERILE, Yellow, 10/Peel Pack, 50 Packs/Unit
    SKU: 2865-CS
    Manufacturer: Globe Scientific
    Inoculation Loop, Rigid, 10uL with Needle, with Calibration Certificate, STERILE, Yellow, 10/Peel Pack, 50 Packs/Unit, CS500 (6000 per CS)
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    was $1,002.70 Special Price $731.14
  8. Tetrathionate Broth w/BG; HDx, 16x125mm tube R
    SKU: K164-PK
    Manufacturer: Hardy Diagnostics
    (Tetrathionate Broth with Brilliant Green) For the selective enrichment of Salmonella spp. Use with iodine-iodide solution (cat. no. Z129). (20 per PK)
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    was $65.29 Special Price $52.37
  9. BBE Agar PK10
    SKU: G05-PK
    Manufacturer: Hardy Diagnostics
    Bacteroides Bile Esculin Agar) For the selective isolation and detection of Bacteroides fragilis group. Comparable to: Remel R01104 (10 per PK)
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    was $20.02 Special Price $16.05
  10. BHI Agar w/Blood & Gent.; HDx, plstc HardyFlask R
    SKU: X12-PK
    Manufacturer: Hardy Diagnostics
    Trehalose Fermentation Broth, 5ml, 13x100mm with glass durham tube, order by the package of 20, by Hardy Diagnostics For the determination of fermentation reactions in yeasts. When incubated at 42 deg. C aids in the identification of Candida glabrata. (20 per PK)
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    was $129.03 Special Price $103.50
  11. Standrd Methds Ag,Dp 18ml; HDx, 20x125mm tube
    SKU: Q21-PK
    Manufacturer: Hardy Diagnostics
    Standard Methods Agar (Plate Count Agar/Tryptone Glucose Yeast (TGY) Agar) Deep, 18ml, 20x125mm pour tube, order by the package of 20, by Hardy Diagnostics (Plate Count Agar) For the cultivation and enumeration of microorganisms in dairy products, food, and water. Comparable to: BD 221030 (20 per PK)
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    was $60.31 Special Price $48.37
  12. Luria Agar Granulated, Miller's LB Agar, 500 Grams CAS# 91079-40-2; 8013-01-2; 7647-14-5; 9002-18-0
    Manufacturer: Research Products International
    Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.24, 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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    $140.50
  13. Agar, 1 Gram Capsules, High Gel Strength, 500 Grams CAS# 9002-18-0
    Manufacturer: Research Products International
    Dimensions: 5X6X5, Weight: 1.5, Cas#: 9002-18-0 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $268.45
  14. Terrific Broth, Modified, Powder, 5 Kilograms CAS# 91079-40-2; 8013-01-2; 7778-77-0; 7758-11-4
    Manufacturer: Research Products International
    Dimensions: 10.00 x 7.50 x 10.00, Weight: 12.43, Cas#: 91079-40-2; 8013-01-2; 7778-77-0; 7758-11-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $578.30
  15. 2XYT Broth, Powder, 500 Grams CAS# 91079-40-2; 8013-01-2; 7647-14-5
    Manufacturer: Research Products International
    Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.23, 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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    $71.80
  16. 2XYT Broth, Granulated, 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: 12.43, 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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    $800.50
  17. Peptone, Granulated, 2 Kilograms CAS# 73049-73-7
    Manufacturer: Research Products International
    Dimensions: 4.88 x 7.25 x 4.88, Weight: 2.42, Cas#: 73049-73-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $303.65
  18. Cystine Heart Agar, 2 Kilograms
    Manufacturer: Research Products International
    Dimensions: 4.88 x 10.25 x 4.88 Weight: 4.68 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $567.80
  19. Proteose Peptone, 500 G
    Manufacturer: Research Products International
    Proteose Peptone, 500 G (1 per ea )
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    $235.25
  20. Yeast Extract, 1 Gram Capsules, 1 Kilogram CAS# 8013-01-2
    Manufacturer: Research Products International
    Dimensions: 4.88 x 10.25 x 4.88, Weight: 2.49, Cas#: 8013-01-02 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $258.80
  21. Deionized Water; 20x150mmTube,15ml
    SKU: K186-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 5 PACKS For the preparation of dilutions and suspensions. (20 per PK)
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    was $104.76 Special Price $84.03
  22. Tech Agar Slant, 5.5ml; HDx, 16x100mm tube
    SKU: L96-PK
    Manufacturer: Hardy Diagnostics
    Tech Agar, 5.5ml fill, 16x100mm tube slant, order by the package of 20, by Hardy Diagnostics MINIMUM ORDER: 5 PACKS For the production of pyocyanin pigment by Pseudomonas species. (20 per PK)
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    was $148.13 Special Price $118.81
  23. SOB Broth, 100 Grams
    Manufacturer: Research Products International
    Dimensions: 3.50 x 3.75 x 3.50 Weight: 0.32 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $46.00
  24. LB Agar w/Kanamycin; HDx,15x100mm plt 10/pk *R
    SKU: G194-PK
    Manufacturer: Hardy Diagnostics
    All CulGenex products are offered exclusively through VWR (10 per PK)
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    was $66.87 Special Price $53.63
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