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. 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
  2. LevGo® smartPick™ Wooden Inoculation Pick, large
    Manufacturer: LevGo
    6in, 152.4mm, Made in USA (25 per PK )
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    was $63.01 Special Price $37.68
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. Luria Agar Powder, Miller's LB Agar, 1 Kilogram CAS# 91079-40-2; 8013-01-2; 7647-14-5; 9002-18-0
    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; 9002-18-0 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $189.85
  13. 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
  14. 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
  15. MIDDLEBROOK 7H11 PK10
    SKU: W35-PK
    Manufacturer: Hardy Diagnostics
    MIDDLEBROOK 7H11 PK10 (10 per PK)
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    was $19.59 Special Price $15.71
  16. CTA w/ Salicin; HDx, 13x100mm tube, R
    SKU: Y24-PK
    Manufacturer: Hardy Diagnostics
    CTA (Cystine Tryptic Agar) with Salicin, 3ml Deep, 13x100mm tube, optically clear, glasstube, order by the package of 20, by Hardy Diagnostics Hardy Diagnostics CTA Media are recommended for the determination of carbohydrate fermentation by fastidious organisms such as Neisseria spp. They are also used for the detection of bacterial motility and serve as a culture media for microorganism maintenance. (20 per PK)
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    was $169.58 Special Price $136.02
  17. Thio w/Supplements HDx, 16x125mm tube, PK20
    SKU: K23-PK
    Manufacturer: Hardy Diagnostics
    Thioglycollate with Supplements, (Hemin, Vitamin K, and Calcium Carbonate Chip), filtered (to remove dead bacteria), 10ml, 16x125mm tube, order by the package of 20, by Hardy Diagnostics (Thioglycollate without Indicator, with Hemin, Vitamin K, and Calcium Carbonate Chip as a buffer) For the cultivation of fastidious anaerobes. Filtered to remove all dead bacteria and debris. Intended for human diagnostic use and taxed as a medical device. The last thing you want to see on your Gram Stain of sterile fluids is dead bacteria! Not from your specimen, but from your culture medium broth… Did you know that all powdered culture media contains bacteria that, although killed during the sterilization process, may show up as dead bacteria on your Gram stain? This is a possible cause of false positive reports. Hardy Diagnostics solves this problem by filtering its Thioglycollate before sterilization, leaving the medium clear, clean, and free from dead bacteria! Avoid false positives, and insist that your Thioglycollate be filtered. Filtered: 0.45 micron filter will remove dead bacteria from the medium Selection: Many different tubes sizes and fill volumes available Economical: Ask us for a price quote for large quantities Fast Delivery: Hardy Diagnostics maintains six distribution centers across the USA Comparable to: BD 298518 (20 per PK)
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    was $52.59 Special Price $42.18
  18. UVM Broth, 500ml; HDx, 500ml PC bottle
    SKU: U51-PK
    Manufacturer: Hardy Diagnostics
    UVM Broth, for Listeria, 500ml, 500ml polycarbonate bottle, order by the package of 10, by Hardy Diagnostics (UVM Modified Listeria Broth) For the selective cultivation of Listeria monocytogenes. (10 per PK)
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    was $312.39 Special Price $250.56
  19. Lowenstein Jensen, Gruft; HDx, plstc HardyFlask R
    SKU: X23-PK
    Manufacturer: Hardy Diagnostics
    LJ (Lowenstein Jensen) Gruft, 50ml plastic HardyFlask™, order by the package of 20, by Hardy Diagnostics Lowenstein Jensen Media are recommended for use in the cultivation and isolation of Mycobacterium species. (20 per PK)
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    was $123.01 Special Price $98.66
  20. LevGo® smartPick™ Wooden Inoculation Pick, mini
    Manufacturer: LevGo
    Fits 1.5ml tube (lid closed), 1.28in. 32.5mm, Made in USA (200 per CS )
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    was $1,580.68 Special Price $1,055.66
  21. Teasing Needle, Plastic, Bent
    Manufacturer: C A Scientific Co Inc
    These high-quality stainless-steel probes with a plastic handle are best used to eliminate the adsorption of contaminants such as mold, fungus, or fixatives. Testing needle available either bent or straight (12 per PK )
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    was $4.53 Special Price $3.97
  22. TSA, USP, 150ml; HDx, 8oz glass bottle
    SKU: U49-PK
    Manufacturer: Hardy Diagnostics
    Tryptic Soy Agar (TSA), USP, 150ml, 8 ounce glass bottle, order by the package of 20, 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. (20 per PK)
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    was $224.04 Special Price $179.70
  23. TSB, USP, 25ml; HDx,180mL WM jar
    SKU: U223-PK
    Manufacturer: Hardy Diagnostics
    Tryptic Soy Broth (TSB), USP, 25ml, 180ml optically clear, shatter resistant, polycarbonate wide mouth jar, order by the package of 12, by Hardy Diagnostics For the cultivation of microorganisms. Also known as TSB or Soybean-Casein Digest Broth, USP. (12 per PK)
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    was $141.06 Special Price $113.14
  24. Rose Bengal w/Chloramphen; HDx, 15x100mm plate R
    SKU: W87-PK
    Manufacturer: Hardy Diagnostics
    Rose Bengal Agar with Chloramphenicol, deep fill, 15x100mm plate, order by the package of 10, by Hardy Diagnostics MINIMUM ORDER: 10 PACKS For the selective isolation and enumeration of yeasts and molds. Many yeasts and molds will not grow in an acidic pH environment. This media has a neutral pH which helps grow yeast and mold, but is also conducive to the growth of bacteria. The addition of chloramphenicol helps reduce bacterial overgrowth. (10 per PK)
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    was $63.79 Special Price $51.18
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