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. Orange Serum Agar; HDx, 15x100mm plate * R
    SKU: G181-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 10 PACKS For the cultivation and enumeration of aciduric bacteria and fungi by membrane filtration methods. (10 per PK)
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    was $34.25 Special Price $27.48
  2. Malt Extract Broth, 500 Grams
    Manufacturer: Research Products International
    Dimensions: 3.50 x 7.00 x 3.50 Weight: 1.24 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $126.30
  3. Terrific Broth Modified 500ml Capsules, 25 Capsules of 24 Grams, 600 Grams CAS# 91079-40-2; 8013-01-2; 7778-77-0; 7758-11-4
    Manufacturer: Research Products International
    Dimensions: 5.00 x 6.00 x 5.00, Weight: 1.64, 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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    $149.55
  4. NGM , Nematode Growth Medium, , 5 Kilograms
    Manufacturer: Research Products International
    Mol. Wt: Common Name: Nematode Growth Medium Formula: Dimensions: 10.00 x 7.50 x 10.00 Weight: 12.4 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $797.95
  5. YPD Agar, 333ml Capsules, 500 Grams
    Manufacturer: Research Products International
    Dimensions: 5.00 x 6.00 x 5.00 Weight: 1.77 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $137.10
  6. Saline 0.85%, 100ml; HDx, 125ml PP Bottle
    SKU: U155-PK
    Manufacturer: Hardy Diagnostics
    Saline, 0.85%, 100ml, 125ml polypropylene bottle, order by the package of 12, by Hardy Diagnostics For the preparation of isotonic suspensions and dilutions of microorganisms. Filtered to minimize particulates and dead bacteria. (12 per PK)
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    was $97.07 Special Price $77.86
  7. TSB, 9ml; HDx, 16x100mm tube
    SKU: K88-PK
    Manufacturer: Hardy Diagnostics
    Tryptic Soy Broth (TSB), 9ml, 16x100mm tube, order by the package of 20, by Hardy Diagnostics (Tryptic Soy Broth) For sterility testing and cultivation of microorganisms. Comparable to: BD 221092 (20 per PK)
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    was $49.93 Special Price $40.05
  8. Luria Broth Granulated, 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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    $157.80
  9. Fluid Thio., USP, 20ml; HDx, Serum Vial
    SKU: U68-PK
    Manufacturer: Hardy Diagnostics
    Fluid Thioglycollate, USP, 20ml fill, serum vial with needle-port septum, order by the package of 50, by Hardy Diagnostics Hardy Diagnostics Fluid Thioglycollate Media, USP is recommended for the cultivation of aerobic, microaerophilic, and anaerobic microorganisms in normally sterile materials. Fluid Thioglycollate Medium conforms to the formula stated in the United States Pharmacopeia (USP). (Thioglycollate Broth with Resazurin Oxygen Indicator) For the cultivation of microorganisms and USP sterility procedures. Comparable to: Remel R08846 (50 per PK)
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    was $221.07 Special Price $177.32
  10. Carrageenan, Kappa Type, 1 Kilograms CAS# 11114-20-8
    Manufacturer: Research Products International
    Dimensions: 4.88 x 7.00 x 4.88, Weight: 2.25, Cas#: 11114-20-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $268.45
  11. BHI Broth, 1ml; HDx, 13x100mm tube
    SKU: K110-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 5 PACKS (Brain Heart Infusion Broth) For the cultivation of microorganisms. (20 per PK)
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    was $125.80 Special Price $100.91
  12. NZM Broth, 500 Grams
    Manufacturer: Research Products International
    Dimensions: 3.50 x 7.00 x 3.50 Weight: 1.24 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $79.75
  13. m FC w/1% Rosolic Acid; HDx, 11x50mm (Advantek) R
    SKU: G272-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 10 PACKS For the isolation and enumeration of fecal coliforms in water using membrane filtration, based on lactose fermentation. Contains 1% Rosolic Acid. (10 per PK)
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    was $76.42 Special Price $61.30
  14. Tryptose Phosphate Broth, 500 Grams
    Manufacturer: Research Products International
    Dimensions: 3.50 x 7.00 x 3.50 Weight: 1.23 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $117.50
  15. Mycoplasma Agar; HDx, 15x60mm plt 10/pk* R
    SKU: G362-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 5 PACKS For the cultivation of Mycoplasma and the detection of Mycoplasma contamination in biologics and biological processes. Features and Benefits: Optically clear polystyrene For distortion free viewing. Heavy-Duty Reduces breakage during shipping. Stacking rings Polystyrene Petri plates feature raised rings for stacking ability and prevents sliding. Breathable Packaging Packaged in sleeves of 10 plates in a "breathable" bag that prevents buildup of condensation and excess moisture (10 per PK)
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    was $44.46 Special Price $35.66
  16. Fluid A, USP, 100ml; HDx, 100ml btl w/septum
    SKU: U109-PK
    Manufacturer: Hardy Diagnostics
    Fluid A, USP, 100ml fill, 100ml bottle with needle-port septum, order by the package of 20, by Hardy Diagnostics A rinsing and diluting fluid for use in USP testing protocols. Contains peptone 0.1%. 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. (20 per PK)
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    was $133.10 Special Price $106.76
  17. BHI Broth, Brain Heart Infusion Broth, 1 Kilogram
    Manufacturer: Research Products International
    Mol. Wt: Common Name: Brain Heart Infusion Broth Formula: 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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    $246.90
  18. Malonate Broth; HDx, 13x100mm tube
    SKU: K36-PK
    Manufacturer: Hardy Diagnostics
    Malonate Broth, 5ml, 13x100mm tubes, optically clear, glass tube, order by the package of 20, by Hardy Diagnostics MINIMUM ORDER: 5 PACKS For the differentiation of gram negative bacilli based on malonate utilization. Comparable to: Remel R061326 (20 per PK)
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    was $104.91 Special Price $84.15
  19. Starch Agar; HDx, 15x100mm plt 10/pk R
    SKU: G294-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 10 PACKS Hardy Diagnostics Starch Agar is recommended for the use in the determination of starch hydrolysis by microorganisms. Comparable to: BD 295911 (10 per PK)
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    was $102.27 Special Price $82.04
  20. Inoculation Loop, Rigid, 1uL with Needle, with Calibration Certificate, STERILE, Blue, Individually Wrapped
    SKU: 2851-CS
    Manufacturer: Globe Scientific
    Inoculation Loop, Rigid, 1uL with Needle, with Calibration Certificate, STERILE, Blue, Individually Wrapped, CS500 (5000 per CS)
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    was $2,011.60 Special Price $1,466.79
  21. 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
  22. Loop, Disposable, 10uL, Flexible, Light Blue, Loop Caddy, Resealable Pouches
    Manufacturer: Hardy Diagnostics
    Loop, Disposable, 10uL, Flexible, Light Blue, Loop Caddy, Resealable Pouches (1 per EA )
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    was $153.75 Special Price $123.31
  23. Lauryl Tryptose Broth, SS; HDx, 16x125mm w/Dtube
    SKU: K61-PK
    Manufacturer: Hardy Diagnostics
    Lauryl Tryptose Broth, Single Strength, 10ml, 16x125mm tube with durham tube, order by the package of 20, by Hardy Diagnostics For the detection of coliforms in water and food. Single strength. Contains a durham tube for gas detection. (20 per PK)
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    was $68.61 Special Price $55.02
  24. StrepPro Extraction Rgt 1 HDx, 60 tests EA 1
    Manufacturer: Hardy Diagnostics
    StrepPRO™ Extraction Reagent 1, for the rapid latex agglutination test, 60 tests, by Hardy Diagnostics Extraction 1 Reagent for the rapid latex agglutination test for the identification of streptococcal groups. Comparable to: Remel R62052 (1 per EA)
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    was $70.29 Special Price $56.37
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