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. Inoculation Loop, Rigid, 10uL with Needle, with Calibration Certificate, STERILE, Yellow, Individually Wrapped
    SKU: 2855-CS
    Manufacturer: Globe Scientific
    Inoculation Loop, Rigid, 10uL with Needle, with Calibration Certificate, STERILE, Yellow, Individually Wrapped, CS500 (5000 per CS)
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    was $2,011.60 Special Price $1,466.79
  2. HardyCHROM MRSA, CP; HDx,15x65mm Contct Plt R
    SKU: P14-PK
    Manufacturer: Hardy Diagnostics
    Bright color development within 24 hours! HardyCHROM™ MRSA, Contact Plate is a chromogenic medium recommended for use in the cultivation of methicillin resistant Staphylococcus aureus (MRSA) from environmental surfaces to aid in the prevention and control of MRSA infections in health care settings. Each contact plate has a specified grid molded into the bottom of the plate for enumeration of microbial colonies growing on a variety of surfaces. HardyCHROM™ MRSA, Contact Plate is not intended to diagnose MRSA infection nor to guide or monitor therapy. Read-out at 24 hours Distinct color change read-out Bright color development (10 per PK)
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    was $84.09 Special Price $67.45
  3. TSB w/Lecithn & Twn 9 ml; HDx, 20x125mm tube
    SKU: K134-PK
    Manufacturer: Hardy Diagnostics
    (Tryptic Soy Broth with Lecithin and Tween 80®) For the cultivation of microorganisms (20 per PK)
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    was $79.15 Special Price $63.48
  4. Lactobacilli MRS Broth; HDx,16x125mm tube R
    SKU: K15-PK
    Manufacturer: Hardy Diagnostics
    Lactobacilli MRS Broth, for Lactobacillus, 9ml fill, 16x125mm tube, order by the package of 20, by Hardy Diagnostics (20 per PK)
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    was $102.55 Special Price $82.25
  5. LB Agar, Low Salt Formula, Powder, Lennox L Agar, 500 Grams CAS# 91079-40-2, 8013-01-2, 7647-14-5, 9002-18-0
    Manufacturer: Research Products International
    Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.24, 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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    $99.90
  6. Columbia Agar, USP; HDx, 15x100mm plate R
    SKU: G250-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 10 PACKS For the isolation and cultivation of nonfastidious and fastidious microorganisms. Conforms to Harmonized USP/EP/JP requirements. (10 per PK)
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    was $38.44 Special Price $30.83
  7. LB Agar w/Ampicillin; HDx,15x100mm 10pk *R
    SKU: G81-PK
    Manufacturer: Hardy Diagnostics
    CulGenex™ LB Agar, Lennox Media is recommended for the cultivation of recombinant Escherichia coli strains used in phage production and in molecular studies. All CulGenex products are offered exclusively through VWR. Comparable to: BD 298273 (10 per PK)
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    was $49.97 Special Price $40.08
  8. LevGo® smartPick™ Wooden Inoculation Pick, standard
    Manufacturer: LevGo
    2.5in., 63.5mm, Made in USA (80 per PK )
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    was $90.89 Special Price $58.92
  9. Inoculation Loop, Rigid, 1uL with Needle, with Calibration Certificate, STERILE, Blue, 20/Peel Pack, 25 Packs/Unit
    SKU: 2811-CS
    Manufacturer: Globe Scientific
    Inoculation Loop, Rigid, 1uL with Needle, with Calibration Certificate, STERILE, Blue, 20/Peel Pack, 25 Packs/Unit (6000 per CS)
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    was $895.00 Special Price $652.61
  10. Peptone, Granulated, 500 Grams CAS# 73049-73-7
    Manufacturer: Research Products International
    Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.24, Cas#: 73049-73-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $92.25
  11. LevGo® smartPick™ Wooden Inoculation Pick, standard
    Manufacturer: LevGo
    2.5in., 63.5mm, Made in USA (80 per PK )
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    was $110.25 Special Price $58.92
  12. Tetrathionate Broth; HDx, 16x125mm tube, * R
    SKU: K65-PK
    Manufacturer: Hardy Diagnostics
    Tetrathionate Broth Base, 10ml, 16x125mm tube, use with iodine #Z129, order by the package of 20, by Hardy Diagnostics For selective enrichment of Salmonella spp. Use with iodine-iodide solution (cat. no. Z129). Comparable to: BD 210430 (20 per PK)
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    was $73.46 Special Price $58.92
  13. Inoculation Loop, Rigid, 1uL with Needle, with Calibration Certificate, STERILE, Blue, 10/Peel Pack, 50 Packs/Unit
    SKU: 2861-CS
    Manufacturer: Globe Scientific
    Inoculation Loop, Rigid, 1uL with Needle, with Calibration Certificate, STERILE, Blue, 10/Peel Pack, 50 Packs/Unit, CS500 (6000 per CS)
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    was $1,002.70 Special Price $731.14
  14. BEA w/Azide CNA biplate; HDx, 15x100mm R
    SKU: J66-PK
    Manufacturer: Hardy Diagnostics
    (Bile Esculin Agar with Azide / Columbia Agar with 5% Sheep Blood, Colistin and Nalidixic Acid) For the presumptive identifcation of group D streptococci including enterococci and gram positive bacteria. (10 per PK)
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    was $419.37 Special Price $336.37
  15. LJ w/NaCl Slant; HDx, 20x125mm tube R
    SKU: C29-PK
    Manufacturer: Hardy Diagnostics
    MINIMUM ORDER: 5 PACKS For the differentiation of Mycobacterium spp. Contains 5% NaCl Comparable to: Remel R08518 (20 per PK)
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    was $108.75 Special Price $87.22
  16. Surface Sampling Kit: 10 ml Tube With Built-In Swab And 10 ml Pbs
    Manufacturer: GVS North America
    Surface Sampling Kit: 10 ml Tube With Built-In Swab And 10 ml Pbs (10 per CS )
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    was $38.00 Special Price $30.48
  17. Peptone Water, 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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    $64.15
  18. BBE/LKV; HDx, 15x100mm biplt 1/pk*
    Manufacturer: Hardy Diagnostics
    Bacteroides Bile Esculin 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 Bilophila spp. LKV (Laked Blood with Kanamycin and Vancomycin) Agar is recommended for use in the selective isolation and partial identification of obligately anaerobic gram-negative bacilli, such as Prevotella spp. and Bacteroides sp Comparable to: BD 297260 (1 per EA)
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    was $7.41 Special Price $5.95
  19. Fraser Broth, Modified; HDx, 16x125mm tube, 10mlR
    SKU: K98-PK
    Manufacturer: Hardy Diagnostics
    Fraser Broth, Modified, 10ml, 16x125mm tube, order by the package of 20, by Hardy Diagnostics Fraser Broth, Modified (without ferric ammonium citrate) is recommended for the selective enrichment of Listeria spp. in foods and environmental samples. This product is not intended to be used for the diagnosis of human disease. Our Tube Features: Flat bottom Contributes to stability when set on end. Leak-proof Caps provide security during handling and transportation. Optically clear Tubes are made of clarified glass for clear viewing. (20 per PK)
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    was $80.21 Special Price $64.34
  20. Moellrs Lysine Decarb.; HDx,16x125mm tube,brth
    SKU: Y43-PK
    Manufacturer: Hardy Diagnostics
    Moeller's Lysine Decarboxylase, 5ml fill, 16x125mm tube, order by the package of 20, by Hardy Diagnostics For the differentiation of gram negative enteric bacilli based on the decarboxylation reaction of amino acids. Comparable to: Remel R060760 (20 per PK)
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    was $83.11 Special Price $66.66
  21. Water w/Tween, 24ml; HDx, 20x125mm tube
    SKU: V25-PK
    Manufacturer: Hardy Diagnostics
    Water with Tween® 80, 24ml fill, 20x125mm tube, order by the package of 20, by Hardy Diagnostics (Deionized water with Tween 80, 0.02%) For preparing dilutions for MIC procedures. Comparable to: Remel R14503 (20 per PK)
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    was $77.87 Special Price $62.46
  22. Middlebrook 7H11/7H11 Sel; HDx, 15x100mm biplate R
    SKU: J75-PK
    Manufacturer: Hardy Diagnostics
    Middlebrook 7H11 Agar is recommended for use in the isolation and cultivation of Mycobacterium species. Middlebrook 7H11 Agar contains inorganic compounds that supply essential growth stimulating inorganic salts, as well as vitamins and necessary co-factors. Comparable to: BD 297250 (10 per PK)
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    was $36.15 Special Price $28.99
  23. Terrific Broth Modified 500ml Capsules, 200 Capsules of 24 Grams, 5 Kilograms CAS# 91079-40-2; 8013-01-2; 7778-77-0; 7758-11-4
    Manufacturer: Research Products International
    Dimensions: 10.00 x 11.25 x 10.00, Weight: 13.8, 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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    $956.25
  24. StrepPro B Grouping Latex HDx, 60 tests
    Manufacturer: Hardy Diagnostics
    StrepPro B Grouping Reagent, 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: BD 240957 (1 per EA)
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    was $120.84 Special Price $96.93
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