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 w/L&T, 100ml, USP; HDx,240mL WM Jar
    SKU: U261-PK
    Manufacturer: Hardy Diagnostics
    Tryptic Soy Broth (TSB), with Lecithin & Tween® 20, USP, 100ml fill, 8oz wide mouth jar, USP, order by the package of 12, by Hardy Diagnostics For the cultivation of microorganisms. (12 per PK)
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    was $113.18 Special Price $90.78
  2. StrepPro G Grouping Latex, HDx, 60 tests EA 1
    Manufacturer: Hardy Diagnostics
    StrepPRO™ Grouping Reagent G, 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 R62035 (1 per EA)
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    was $125.60 Special Price $100.74
  3. EMB, Eosin Methylene Blue; HDx,15x65mm Contct Plt R
    SKU: P09-PK
    Manufacturer: Hardy Diagnostics
    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. EMB Agar formulations are recommended for use as selective and differential media for the isolation of gram-negative bacilli (including coliform organisms and enteric pathogens) from clinical and nonclinical 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 $23.76 Special Price $19.06
  4. Bile Esculin Agar, Bea Pk10
    SKU: G12-PK
    Manufacturer: Hardy Diagnostics
    (Bile Esculin Agar) For the detection of group D streptococci including enterococci. Comparable to: Remel R01190 (10 per PK)
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    was $19.80 Special Price $15.89
  5. Cooked Meat w/Iron, H&K; HDx, 16x125mm tube
    SKU: K19-PK
    Manufacturer: Hardy Diagnostics
    Cooked Meat (chopped meat) with Iron, Hemin, and Vitamin K, for anaerobes, 16x125mm tube, order by the package of 20, by Hardy Diagnostics (Chopped Meat) For cultivation of anaerobic bacteria and the preservation of stock cultures. Contains iron filings, hemin, yeast extract, and vitamin K. Comparable to: Remel R060546 (20 per PK)
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    was $82.04 Special Price $65.80
  6. GBS Detect; HDx,15x100mm plt,100/BX R
    Manufacturer: Hardy Diagnostics
    GBS Detect™ is recommended for the isolation and differentiation by enhanced hemolysis of detection of gamma-hemolytic (non-hemolytic) Group B Streptococcus from GBS enrichment broth procedures. 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 (1 per EA)
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    was $124.93 Special Price $102.74
  7. NaCl 6.5% Broth w/Indic.; HDx, 13x100mm glass
    SKU: K49-PK
    Manufacturer: Hardy Diagnostics
    NaCl 6.5% Broth with indicator, salt tolerance broth, 2ml, 13x100mm glass tube, optically clear, order by the package of 20, by Hardy Diagnostics (Salt Tolerance Broth with BCP indicator) For the identification of Enterococcus spp. Comparable to: Remel R061044 (20 per PK)
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    was $92.80 Special Price $74.43
  8. D/E Neutralizing Br 750ml; HDx, 1L PC bottle R
    SKU: U76-PK
    Manufacturer: Hardy Diagnostics
    D/E Neutralizing Broth, 750ml, 1L polycarbonate bottle, order by the package of 10, by Hardy Diagnostics For neutralizing and evaluating the efficacy of antiseptics and disinfectants. (10 per PK)
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    was $407.49 Special Price $326.84
  9. Middlebrook 7H10 Slant; HDx, 20x125mm tube R
    SKU: C34-PK
    Manufacturer: Hardy Diagnostics
    For the cultivation of Mycobacterium spp. Comparable to: BD 220959 (20 per PK)
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    was $95.77 Special Price $76.81
  10. Sabdex Agar, USP, 400ml; HDx, 16 ounce glass BR
    SKU: U352-PK
    Manufacturer: Hardy Diagnostics
    Sabdex (Sabouraud Dextrose) Agar, USP, 400ml fill, 16 ounce glass bottle, order by the package of 12, by Hardy Diagnostics (Sabourauds Dextrose Agar) For the cultivation of fungi. (12 per PK)
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    was $190.34 Special Price $152.67
  11. Tryptone Broth 2%; HDx, 13x100mm tube
    SKU: R40-PK
    Manufacturer: Hardy Diagnostics
    Tryptone Broth 2%, 2ml, 13x100mm tube, optically clear, glass tube, order by the package of 20, by Hardy Diagnostics For the performance of the Indole test. Use with Kovacs Reagent (cat. no. Z67) (20 per PK)
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    was $83.56 Special Price $67.02
  12. Sabdex C&G/DTM Biplate; HDx, 15x100mm biplate R
    SKU: J107-PK
    Manufacturer: Hardy Diagnostics
    For the selective isolation and differentiation of pathogenic fungi and dermatophytic fungi. (10 per PK)
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    was $46.89 Special Price $37.61
  13. LB Agar w/Carbencillin; HDx, 15x100mm plate R
    SKU: G407-PK
    Manufacturer: Hardy Diagnostics
    CulGenex™ LB Agar Media formulations are recommended for the cultivation of bacteria used in molecular biology studies. All CulGenex products are offered exclusively through VWR. (10 per PK)
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    was $67.15 Special Price $53.85
  14. LJ Selective Slant; HDx, 20x125mm tube R
    SKU: C25-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 20 PACKS Contains lincomycin, nalidixic acid, and cyclohexamide. For the selective isolation of Mycobacterium spp. Comparable to: Remel R08502 (20 per PK)
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    was $92.28 Special Price $74.01
  15. Fluid Thio., USP, 500ml; HDx,500ml bottle w/septum
    SKU: U273-PK
    Manufacturer: Hardy Diagnostics
    Fluid Thioglycollate, USP, 500ml, 16 ounce glass bottle with needle-port septum screw cap, order by the package of 10, by Hardy Diagnostics MINIMUM ORDER: 6 PACKS (Thioglycollate Broth with Resazurin Oxygen Indicator) For the cultivation of microorganisms and USP sterility procedures. (10 per PK)
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    was $468.25 Special Price $375.57
  16. Methylene Blueor AFB HDx, 250ml, GRND EA 1
    Manufacturer: Hardy Diagnostics
    Methylene Blue for AFB (Acid Fast Bacteria) stain for mycobacteria, 250ml, by Hardy Diagnostics For Acid Fast Stain procedure, and other uses. An aqueous solution of methylene blue. Comparable to: BD 212516 (1 per EA)
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    was $16.18 Special Price $12.98
  17. CIN/MacConkey w/Sorbitol; HDx, 15x100mm biplate R
    SKU: J49-PK
    Manufacturer: Hardy Diagnostics
    Section I: CIN Agar. Section II: MacConkey with Sorbitol. For isolation of Yersinia, Aeromonas and E. coli O157. Incubate at 37deg C. (10 per PK)
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    was $32.18 Special Price $25.81
  18. GBS Detect (RSR); HDx,15x100mm plt, 10/pk R
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 10 PACKS For the isolation and differentiation by enhanced hemolysis of gamma hemolytic Group B Streptococcus. This media is identical to Cat. no. A300, however his product has a Petri plate that features a reduced stacking ring (smoother bottom) so that it will work smoothly with automated streaking devices. (10 per PK)
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    was $23.20 Special Price $18.61
  19. DuoPak B; HDx, 15x100mm plt 2/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™ Bacteroides Bile Esculin (BBE) Agar is an enriched, selective, and differential medium recommended for the rapid isolation and presumptive identification of obligately anaerobic gram-negative bacilli of the Bacteroides fragilis group and Bilophila spp. AnaeroGRO™ Anaerobic Phenylethanol Agar (PEA) 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. (1 per EA)
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    was $10.60 Special Price $8.51
  20. Butterfield's Phos Buffer; HDx, PP tube w/screw cap
    SKU: K119-PK
    Manufacturer: Hardy Diagnostics
    (Butterfield's Phosphate Buffer, pH: 7.2) For the preparation of dilutions for plate count and other laboratory tests. (20 per PK)
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    was $88.07 Special Price $70.64
  21. 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
  22. 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
  23. 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
  24. 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
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