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. HC Group A Strep Agar; HDx, 15x100mm plt 10/pk R
    SKU: G337-PK
    Manufacturer: Hardy Diagnostics
    Color read out in 24 hours! HardyCHROM™ Group A Strep agar is a chromogenic medium for the selective cultivation and differential isolation of Group A Streptococcus (S. pyogenes) from specimens based on colony color. Features and Benefits: Easy colony detection Red colonies are easy to detect. Colonies stand out Red colonies on a white background makes detection easy. Highly selective Selects for Strep Group A. (Streptococcus pyogenes) The HardyCHROM™ plates use optically clear, heavy-duty polystyrene mono plates for distortion-free viewing and reduced breakage during shipping. Receive your pack in a "breathable" sleeve of 10 plates per bag that prevents the buildup of condensation and excess moisture. Hardy mono plates feature raised rings for stacking ability and prevent sliding. See the Instructions for Use (IFU) below (under Technical Information) for the complete procedure with color photos. This media is to be stored and incubated in the dark. If you have a light in your refrigerator, incubator, or you leave the media exposed to light on the benchtop, Hardy Diagnostics of (10 per PK)
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    was $91.12 Special Price $73.09
  2. CNA Agar/EMB Agar; HDx, 15x100mm biplate R
    SKU: J52-PK
    Manufacturer: Hardy Diagnostics
    (Columbia Agar with 5% Sheep Blood, Colistin and Nalidixic Acid / Eosin Methylene Blue, Levine Agar) (10 per PK)
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    was $17.13 Special Price $13.73
  3. United Scientific™ Inoculating Needle, Aluminum
    Manufacturer: United Scientific Supplies
    Inoculating needle designed with an 8" long, non-insulated aluminum handle. Made from non-calibrated 26 gauge nickel-chromium wire. (1 per EA )
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    was $2.50 Special Price $1.46
  4. PDA w/TA; HDx,15x100mm Red 10/pk R
    SKU: W96R-PK
    Manufacturer: Hardy Diagnostics
    Carbon Utilization with Inositol Slant, 8ml, 20x125mm tube, order by the package of 20, by Hardy Diagnostics Hardy Diagnostics Carbon Utilization Media with added carbon sources are recommended for use in the cultivation and differentiation of a wide variety of rapidly growing mycobacteria. (10 per PK)
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    was $16.02 Special Price $12.85
  5. R2A Agar; HDx, 15x60mm plate R
    SKU: G03-PK
    Manufacturer: Hardy Diagnostics
    For the detection of heterotrophic bacteria in water, by the membrane filtration technique. (10 per PK)
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    was $23.19 Special Price $18.61
  6. Sabdex Agar w/Chloram.; HDx, plstc HardyFlask
    SKU: X41-PK
    Manufacturer: Hardy Diagnostics
    Sabdex (Sabouraud Dextrose) Agar with Chloramphenicol, 12ml, 50ml plastic HardyFlask™, order by the package of 20, by Hardy Diagnostics Sabouraud Dextrose Agar with Chloramphenicol is recommended for the selective isolation of fungi and yeasts from clinical and nonclinical specimens. HardyFlask™ Features: Lightweight For reduced shipping cost and less chance of breakage. Stackable For increased conservation of space, both in incubator and refrigerator. No special storage racks are needed. Interlocking For increased stability when incubating and transporting. Large surface area For the inoculum. Almost double the area! better isolation of colonies. Slanted neck Facilitates easy inoculation of the flat media surface. Improved clarity For better visibility of the growing culture, both front and back. Comparable to: BD 221825 (20 per PK)
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    was $116.47 Special Price $93.42
  7. Inoculating Needle/Loops 10uL Rigid, Sterile pk1000, Blue
    Manufacturer: Heathrow Scientific
    The Inoculating Needle/Loops combination provides choice to spread or pick colonies and cultures. Transfer bacterial cultures without risk of contamination. (1000 per PK)
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    was $79.33 Special Price $69.70
  8. Wallenstein Slant; HDx, 20x125mm tube R
    SKU: C61-PK
    Manufacturer: Hardy Diagnostics
    For the cultivation of Mycobacterium spp. especially Mycobacteria avium complex (20 per PK)
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    was $99.20 Special Price $79.57
  9. Potato Dextrose,USP,200ml; HDx, 8oz glass bottle
    SKU: U294-PK
    Manufacturer: Hardy Diagnostics
    Potato Dextrose Agar, USP, 200ml, 8 ounce glass bottle, order by the package of 12, by Hardy Diagnostics MINIMUM ORDER: 3 PACKS For the cultivation of yeasts and molds. (12 per PK)
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    was $195.18 Special Price $156.56
  10. StrepPro C Grouping Latex, HDx, 60 tests EA 1
    Manufacturer: Hardy Diagnostics
    StrepPRO™ Grouping Reagent C, for the rapid latex agglutination test, 60 tests, by Hardy Diagnostics Grouping reagent for the rapid latex agglutination test for the identification of streptococcal groups. Comparable to: Remel R30950801 (1 per EA)
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    was $125.61 Special Price $100.74
  11. Peptic Digest Agar w/F&N; HDx, 15x100mm plate R
    SKU: G141-PK
    Manufacturer: Hardy Diagnostics
    For the selective isolation and cultivation of Haemophilus spp. (10 per PK)
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    was $75.51 Special Price $60.56
  12. Letheen Broth, 10ml; HDx, 16x125mm tube R
    SKU: K106-PK
    Manufacturer: Hardy Diagnostics
    For use in determining bactericidal activity of quaternary ammonium compounds. (20 per PK)
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    was $52.44 Special Price $42.06
  13. Mannitol YEP Agar, pH 6.2; HDx,15x100mm plt 10/pk *R
    SKU: G39-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 10 PACKS For use in the cultivation and enumeration of microorganisms and growth promotion testing for aloe products. (10 per PK)
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    was $145.51 Special Price $116.71
  14. BHI Agar w/Bld, Chlr&Gent; HDx, plstc HardyFlask R
    SKU: X14-PK
    Manufacturer: Hardy Diagnostics
    BHI (Brain Heart Infusion) Agar with Blood, Chloramphenicol and Gentamicin, plastic HardyFlask™, order by the package of 20, by Hardy Diagnostics (Brain Heart Infusion Agar with 5% Sheep Blood, Chloramphenicol, and Gentamicin) For the selective isolation of pathogenic fungi. HardyFlask™ Features: Lightweight For reduced shipping cost and less chance of breakage. Stackable For increased conservation of space, both in incubator and refrigerator. No special storage racks are needed. Interlocking For increased stability when incubating and transporting. Large surface area For the inoculum. Almost double the area! better isolation of colonies. Slanted neck Facilitates easy inoculation of the flat media surface. Improved clarity For better visibility of the growing culture, both front and back. Comparable to: BD 296358 (20 per PK)
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    was $112.31 Special Price $90.08
  15. Inoculating Needle/Loops 1uL Flexible, Sterile pk1000, Blue
    Manufacturer: Heathrow Scientific
    Inoculating Needle/Loops 1uL Flexible, Sterile pk1000, Blue (1000 per PK )
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    was $79.33 Special Price $69.70
  16. Inhibitory Mold Ag w/Gent; HDx,20x125 tube slant R
    SKU: L49-PK
    Manufacturer: Hardy Diagnostics
    Inhibitory Mold Agar with Gentamicin Slant, 10ml, 20x125mm tube, order by the package of 20, by Hardy Diagnostics (Inhibitory Mold Agar with Gentamicin) For the selective isolation of pathogenic fungi. (20 per PK)
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    was $81.26 Special Price $65.17
  17. BHI Broth w/Ciprofloxacin HDx,16x100mm tb PK20
    SKU: K258-PK
    Manufacturer: Hardy Diagnostics
    BHI (Brain Heart Infusion) Broth with Ciprofloxacin, 10µg/ml, 13x100mm glass, 5ml, optically clear, glass tube, order by the package of 20, by Hardy Diagnostics For use as a selective pre-enrichment broth for the cultivation of ciprofloxacin-resistant E. coli and other gram negative rods. Urologists use this as a rectal screening medium before they perform a prostate gland biopsy. The biopsy procedure is known for introducing resistant organisms into the bloodstream from the rectum. This media will allow urologists to screen the men first to see if they will be at risk of a “difficult to treat” infection or septicemia. To be used with plated media; either G358 or G258. (20 per PK)
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    was $94.29 Special Price $75.63
  18. Swabcheck Coliform 25/Pk
    Manufacturer: GVS North America
    Swabcheck Coliform 25/Pk (25 per PK )
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    was $373.84 Special Price $299.86
  19. TAT Broth, 490ml; HDx, 1000mL PP Btl 10/pk
    SKU: U318-PK
    Manufacturer: Hardy Diagnostics
    TAT Broth, 490ml fill, 1 liter polypropylene bottle, order by the package of 10, by Hardy Diagnostics MINIMUM ORDER: 10 PACKS For the detection of microorganisms from topical drugs, cosmetics, and other viscous materials. (10 per PK)
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    was $257.73 Special Price $206.72
  20. Environmental Surface Collection Kit, 10ml Transport Tube With 10ml Pbs Solution And 1PC Foam Swab
    Manufacturer: GVS North America
    Environmental surface collection Kit, 10ml transport tube with 10ml PBS solution and 1pc foam swab attached cap in tube (400 per CS )
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    was $949.91 Special Price $761.91
  21. Surface Sampling Kit: 10 ml Tube With Built-In Swab And 10 ml 0.85% Saline,Containing Neutralizer
    Manufacturer: GVS North America
    Surface Sampling Kit: 10 ml Tube With Built-In Swab And 10 ml 0.85% Saline,Containing Neutralizer (10 per CS )
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    was $61.74 Special Price $49.53
  22. Tryptone, Granulated, 500 Grams CAS# 91079-40-2
    Manufacturer: Research Products International
    Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.23, Cas#: 91079-40-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $109.00
  23. Control Slde,Crypto MBL AcidFastControl PK10
    Manufacturer: Hardy Diagnostics
    Control Slide, Crypto MBL, 10/bx, AcidFastControl (1 per EA)
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    was $156.07 Special Price $124.98
  24. Yeast Extract, Granulated, 5 Kilograms CAS# 8013-01-2
    Manufacturer: Research Products International
    Dimensions: 10.00 x 7.50 x 10.00, Weight: 12.43, Cas#: 8013-01-02 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $791.40
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