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. TSB, USP, 50 ml DS; HDx,180mL wide mouth jar
    SKU: U205-PK
    Manufacturer: Hardy Diagnostics
    Tryptic Soy Broth (TSB), USP, double strength, 50ml, 180ml optically clear, shatter resistant, polycarbonate wide mouth jar, order by the package of 12, by Hardy Diagnostics Tryptic Soy Broth (TSB), Double Strength (DS) is recommended for use as a general purpose medium for the isolation and cultivation of a wide variety of bacteria and fungi. This product is not intended to be used for the diagnosis of human disease. (12 per PK)
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    was $163.94 Special Price $131.50
  2. Phosphate Buffer, 30ml; HDx, 2oz PP bottle
    SKU: X31-PK
    Manufacturer: Hardy Diagnostics
    Phosphate Buffer, 30ml, 2 ounce plastic bottle, order by the package of 25, by Hardy Diagnostics For the preparation of specimens for AFB culture and other applications. 0.067M, pH 6.8. (25 per PK)
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    was $437.22 Special Price $350.69
  3. Blood Agar w/Ampicillin; HDx, 15x100mm plate R
    SKU: A12-PK
    Manufacturer: Hardy Diagnostics
    (TSA with 5% Sheep Blood and Ampicillin) For the selective isolation of Aeromonas spp. Comparable to: Remel R01226 (10 per PK)
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    was $45.37 Special Price $36.38
  4. MGP Broth, 2.0ml; HDx, 13x100mm tube R
    SKU: Y25-PK
    Manufacturer: Hardy Diagnostics
    MGP Broth, 2.0ml, 13x100mm tube, optically clear, glass tube, order by the package of 20, by Hardy Diagnostics For the differentiation of clinically significant Enterococcus spp. by the fermentation of MGP (methyl-alpha-D-glucopyranoside). (20 per PK)
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    was $197.55 Special Price $158.45
  5. StrepPro Extraction Rgt 3 HDx, 60 tests (2-8.5ml)
    Manufacturer: Hardy Diagnostics
    StrepPRO™ Extraction Reagent 3, for the rapid latex agglutination test, 60 tests, by Hardy Diagnostics Extraction 3 Reagent for the rapid latex agglutination test for the identification of streptococcal groups Comparable to: Remel R62060 (1 per EA)
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    was $70.29 Special Price $56.37
  6. Malt Ext Agr w/0.01% chl; HDx, Slant,16x100 tube,R
    SKU: L128-PK
    Manufacturer: Hardy Diagnostics
    Malt Extract Agar with 0.01% Chloramphenicol, Slant, 5.5ml, 16x100mm tube, order by the package of 20, by Hardy Diagnostics MINIMUM ORDER: 5 PACKS (Malt Extract Agar with 0.01% Chloramphenicol) For the selective isolation of fungi. (20 per PK)
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    was $187.97 Special Price $150.76
  7. CCFA; HDx,15x65 Cntct P 10/pk R
    SKU: P27-PK
    Manufacturer: Hardy Diagnostics
    Cycloserin-Cefoxitin Fructose Agar (CCFA), contact plate with Lok-Tight™ friction lid, optional locking feature, order by the package of 10, by Hardy Diagnostics MINIMUM ORDER: 10 PACKS Added measure to assure sterility in your environmental monitoring program! Hardy Diagnostics contact plates are recommended for use in the cultivation of microorganisms from environmental surfaces. Cycloserine-Cefoxitin Fructose Agar (CCFA) is an enriched selective and differential medium recommended for the cultivation and isolation of Clostridioides difficile from fecal specimens 3 Easy Steps: 1. Remove lid. 2. Gently press plate to surface without twisting or sliding. 3. Twist clockwise until frosted bands line up to lock lid into place. (10 per PK)
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    was $196.27 Special Price $157.43
  8. Modified LIA Agar; HDx, 15x100mm plate R
    SKU: G86-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 10 PACKS (Modified Lysine Iron Agar, with Novobiocin) For the selective isolation and detection of Salmonella spp. Lysine Iron Agar (LIA) is recommended for use in differentiating certain members of the Enterobacteriaceae, especially Salmonella species, by demonstrating hydrogen sulfide production and the decarboxylation or deamination of lysine. Modified Lysine Iron Agar is recommended for the selective isolation and differentiation of Salmonella species in food, It contains novobiocin to inhibit the growth of gram-positive cocci. (10 per PK)
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    was $104.91 Special Price $84.15
  9. LJ Deep; HDx, 20x150mm tube R
    SKU: C27-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 5 PACKS For the performance of the quantitative catalase test for the identification of Mycobacterium spp. Comparable to: Remel R09512 (20 per PK)
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    was $154.28 Special Price $123.74
  10. SP4 Broth w/Arginine; HDx, 13x100mm tube R
    SKU: R85-PK
    Manufacturer: Hardy Diagnostics
    SP4 Broth with Arginine, for Mycoplasma and Ureaplasma, 2ml, 13x100mm tube, optically clear, glass tube, order by the package of 20, by Hardy Diagnostics For the selective cultivation and differentiation of the mycoplasmas; including M. hominis, M. pneumoniae, and Ureaplasma urealyticum. (20 per PK)
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    was $121.85 Special Price $97.73
  11. MIO Medium; HDx, 16x100mm tube
    SKU: Q20-PK
    Manufacturer: Hardy Diagnostics
    MIO (Motility, Indole, and Ornithine Decarboxylase) Medium, 6.5ml, 16x100mm tube, order by the package of 20, by Hardy Diagnostics For the determination of motility, indole, and ornithine decarboxylation of gram negative bacilli. (20 per PK)
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    was $67.16 Special Price $53.88
  12. TSA w/L&T, 400 ml; HDx, 16 oz gls btl BR R
    SKU: U412-PK
    Manufacturer: Hardy Diagnostics
    Tryptic Soy Agar (TSA) with Lecithin and Tween® 80, 400ml fill, 16 ounce glass boston round bottle, order by the package of 12, by Hardy Diagnostics For the cultivation and enumeration of microorganisms. Neutralizes disinfectants on environmental surfaces. (12 per PK)
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    was $180.71 Special Price $144.94
  13. TB Base Digestant, 50ml; HDx, 2oz Bottle
    SKU: X45-PK
    Manufacturer: Hardy Diagnostics
    TB Base Digestant, for the digestion and decontamination of sputum specimens for TB culture, 50ml, 2 ounce polyethylene bottle, order by the package of 25, by Hardy Diagnostics For the processing of specimens for AFB culture. Add NALC (cat. no. Z60) upon use. See Z158 if a pH color indicator is desired. The Hardy Diagnostics manufacturing facility and quality management system comply with the FDA's Good Manufacturing Practices (GMP) and have achieved ISO 13485 certification as a medical device manufacturer. Quality is a science...Service is an art. At Hardy Diagnostics, we believe in excellence in patient care...just like you do! (25 per PK)
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    was $210.49 Special Price $168.83
  14. Sabdex Agar w/Lec & Tween; HDx, 15x100mm plate R
    SKU: W71-PK
    Manufacturer: Hardy Diagnostics
    Sabdex (Sabouraud Dextrose) Agar with Lecithin and Tween® 80, deep fill, 15x100mm plate, by Hardy Diagnostics MINIMUM ORDER: 10 PACKS For the isolation and cultivation of fungi and the neutralization of disinfectants. Germicidal or disinfectant residue is neutralized by the addition of lecithin and Tween® 80. Neutralization of these residues reduces their inhibitory effect which would ultimately result in the lowering of the microbial count. Quaternary ammonia compounds are neutralized by lecithin while phenolic disinfectants and hexachlorophene are neutralized by Tween® 80. Together, lecithin and Tween® 80 neutralize ethanol. (10 per PK)
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    was $25.73 Special Price $20.63
  15. Bovine Bld Agar w/Esculin; HDx, 15x100mm plate R
    SKU: A189-PK
    Manufacturer: Hardy Diagnostics
    Product Name or Catalog Number: Product Catalog Home > MICROBIOLOGY > Media, Prepared Bovine Blood Agar, 5%, for bovine mastitis, 15x100mm plate, order by the package of 10, by Hardy Diagnostics For detection of organisms that may cause mastitis in dairy cattle, such as Staphylococcus aureus and Streptococcus agalactiae. 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 $16.33 Special Price $13.09
  16. Saline 0.85%; HDx, 13x100mm EP Glass
    SKU: R55-PK
    Manufacturer: Hardy Diagnostics
    Saline, 0.85%, 2ml, 13x100mm EP glass tube, order by the package of 20, by Hardy Diagnostics. For the preparation of isotonic suspensions and dilutions of microorganisms. (20 per PK)
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    was $57.04 Special Price $45.75
  17. L.pneumophila, MBL ATCC 33152, KwikStik EA1
    Manufacturer: Hardy Diagnostics
    L.pneumophila, MBL ATCC 33152, KwikStik EA1 (1 per EA )
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    was $277.06 Special Price $273.80
  18. Phos.Buf. w/MgCl, 500ml; HDx, 500ml PET bottle
    SKU: U193-PK
    Manufacturer: Hardy Diagnostics
    Phosphate Buffer with Magnesium Chloride, 500ml, 500mL sterile square PET bottle, order by the package of 10, by Hardy Diagnostics (Phosphate Buffer with Magnesium Chloride) Diluting fluid. (10 per PK)
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    was $226.65 Special Price $181.80
  19. SterEM Tryptic Soy Agar (TSA) USP, Irradiated, Triple Bagged, 15x100mm Plate, Red Tint Plate
    Manufacturer: Hardy Diagnostics
    SterEM Tryptic Soy Agar (TSA) USP, Irradiated, Triple Bagged, 15x100mm Plate, Red Tint Plate (10 per PK )
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    was $47.75 Special Price $38.29
  20. CTA with Trehalose; HDx, 13x100mm tube R
    SKU: Y20-PK
    Manufacturer: Hardy Diagnostics
    CTA (Cystine Tryptic Agar) with Trehalose, 3ml Deep, 13x100mm tube, optically clear, glass tube, order by the package of 20, by Hardy Diagnostics For the determination of carbohydrate fermentation by fastidious organisms, such as Neisseria spp. It is also used for the detection of bacterial motility and serves as a culture media for microorganism maintenance. (20 per PK)
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    was $106.46 Special Price $85.39
  21. Fluid D USP, 100ml; HDx, 180mL wide mouth jar
    SKU: U135-PK
    Manufacturer: Hardy Diagnostics
    Fluid D, USP, 100ml fill, 180ml wide mouth jar, order by the package of 12, by Hardy Diagnostics MINIMUM ORDER: 6 PACKS 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. (12 per PK)
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    was $274.41 Special Price $220.09
  22. LoopCaddy Loops Stand, for use with LoopCaddy Loops in Resealbale Pouches
    SKU: K24H-EA
    Manufacturer: Hardy Diagnostics
    LoopCaddy Loops Stand, for use with LoopCaddy Loops in Resealbale Pouches (1 per EA )
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    was $248.24 Special Price $199.11
  23. TSA, USP, 200ml; HDx, 8oz glass bottle
    SKU: U260-PK
    Manufacturer: Hardy Diagnostics
    Tryptic Soy Agar (TSA), USP, 200ml, 8 ounce glass bottle, order by the package of 12, by Hardy Diagnostics For use as a general growth medium for the isolation and cultivation of microorganisms. This medium is also recommended for use in the cultivation, storage, maintenance, and transportation of pure cultures of microorganisms. (12 per PK)
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    was $122.96 Special Price $98.63
  24. Brilliant Green Agar; HDx, 15x100mm plate R
    SKU: G75-PK
    Manufacturer: Hardy Diagnostics
    For the isolation of Salmonella spp. other than S. typhi and S. paratyphi from food, clinical, and environmental specimens. Comparable to: Remel R01246 (10 per PK)
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    was $21.62 Special Price $17.34
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