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Enzyme assays are used to measure the level of enzymatic activity in a sample and are vital for the study of enzyme kinetics and inhibition. Based on the level of enzyme inhibition, the assays identify different bacteria strains through easy-to-read indicators such as changes in color, turbidity, sedimentation, precipitation, and colorful formations. The presence or absence of enzyme activity is a taxonomic property of microorganisms and can be used for differentiation or identification.

Enzyme assays are used to measure the level of enzymatic activity in a sample and are vital for the study of enzyme kinetics and inhibition. Based on the level of enzyme inhibition, the assays identify different bacteria strains through easy-to-read indicators such as changes in color, turbidity, sedimentation, precipitation, and colorful formations. The presence or absence of enzyme activity is a taxonomic property of microorganisms and can be used for differentiation or identification.


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Product Image-75803-062

PYR Reagent 15ml

Catalog Number: (75803-062)
Supplier: Hardy Diagnostics
Description: PYR Reagent, 15ml, dropper bottle, cinnamaldehyde, For use in conjunction with PYR disks for the detection of pyroglutamate aminopeptidase found in group A streptococci (Streptococcus pyogenes) and group D enterococci

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Product Image-10063-758

Potassium Hydroxide, 10% KOH, for skin fungal preps, 15ml

Catalog Number: (10063-758)
Supplier: Hardy Diagnostics
Description: Dropper vial, by Hardy Diagnostics, prefer to ship ground. For use in slide preparations of specimens for the purpose of identifying fungal elements. Dissolves epithelial cells that may mask fungal elements.

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Product Image-10062-760

ALLER-Snap* protein residue test

Catalog Number: (10062-760)
Supplier: Hardy Diagnostics
Description: ALLER-Snap*, protein residue test, 100 per box quick and easy way to accurately monitor the cleanliness of surfaces to help ensure product quality. ALLER-Snap* detects protein residues left on a surface after cleaning.

Product available on GSA Advantage®


Product Image-75802-932

Pasteurization Kit

Catalog Number: (75802-932)
Supplier: Hardy Diagnostics
Description: Pasteurization Kit, test for Alkaline Phosphatase in milk to verify pasteurization, based on the Rutgers method, which is a stable and sensitive method that provides an easy to interpret color read out within 30 minutes, Storage: Upon receipt store at 2 to 8 deg C, Size: 3x5ml

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Product Image-10124-530

Protein residue test

Catalog Number: (10124-530)
Supplier: Hardy Diagnostics
Description: PRO-Clean*, protein residue test. A quick and easy way to accurately monitor the cleanliness of food equipment surfaces to help ensure food safety and product quality. Detects protein residues left on a surface after cleaning. Ideal for meat and food processors.

Product available on GSA Advantage®


Product Image-89423-146

Potassium Tellurite 3.5% 10X2Ml By Oxoid

Catalog Number: (89423-146)
Supplier: Hardy Diagnostics

Product available on GSA Advantage®


Product Image-76337-038

Enzymatic Methyl-Seq Kit Nebnext 96 Rxns

Catalog Number: (76337-038)
Supplier: New England Biolabs (NEB)
Description: NEBNext* Enzymatic Methyl-seq Kit, is a new method for identification of 5-mC and 5-hmC, Greater mapping efficiency, More uniform GC coverage, Detection of more CpGs with fewer sequence reads, Uniform dinucleotide
Product Image-76337-184

Enzymatic Methyl-Seq Kit Nebnext 24 Rxns

Catalog Number: (76337-184)
Supplier: New England Biolabs (NEB)
Description: NEBNext* Enzymatic Methyl-seq Kit, is a new method for identification of 5-mC and 5-hmC, Greater mapping efficiency, More uniform GC coverage, Detection of more CpGs with fewer sequence reads, Uniform dinucleotide
Product Image-76339-724

Enzymatic Methyl-Seq Conv Module 24Tst

Catalog Number: (76339-724)
Supplier: New England Biolabs (NEB)
Description: NEBNext* Enzymatic Methyl-seq Conversion Module, New method for identification of 5-mC and 5-hmC, High efficiency conversion, Minimal DNA damage, Minimized GC bias, provides an enzyme-based alternative to bisulfite conversion, Size: 24 assays
Product Image-76339-722

Enzymatic Methyl-Seq Conv Module 96Tst

Catalog Number: (76339-722)
Supplier: New England Biolabs (NEB)
Description: NEBNext* Enzymatic Methyl-seq Conversion Module, New method for identification of 5-mC and 5-hmC, High efficiency conversion, Minimal DNA damage, Minimized GC bias, provides an enzyme-based alternative to bisulfite conversion, Size: 96 assays
Product Image-10834-134

Potassium Hydroxide, 20% KOH

Catalog Number: (10834-134)
Supplier: Hardy Diagnostics
Description: Potassium Hydroxide, 20% KOH, for skin fungal preps, 15ml dropper vial, For use in slide preparations of specimens for the purpose of identifying fungal elements

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Product Image-77497-254

CATALASE TEST LJ DEEP 20X150MM 5ML PK20

Catalog Number: (77497-254)
Supplier: Hardy Diagnostics
Product Image-104086-328

Enzymatic Tests, BART tests for swimming pool and spa water (POOL)

Catalog Number: (104086-328)
Supplier: Hach
Description: Enzymatic Tests, BART tests for swimming pool and spa water (POOL)
Product Image-104086-490

Enzymatic Tests, BART tests for nitrifying bacteria (NB)

Catalog Number: (104086-490)
Supplier: Hach
Description: Enzymatic Tests, BART tests for nitrifying bacteria (NB)
Product Image-104086-488

Enzymatic Tests, BART tests for denitrifying bacteria (DN)

Catalog Number: (104086-488)
Supplier: Hach
Description: Enzymatic Tests, BART tests for denitrifying bacteria (DN)
Product Image-104086-244

Enzymatic Tests, BART tests for sulfate-reducing bacteria (SRB)

Catalog Number: (104086-244)
Supplier: Hach
Description: Enzymatic Tests, BART tests for sulfate-reducing bacteria (SRB)

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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
To process your orders without delay, please provide the required business documentation to purchase this product.

To order chemicals, medical devices, or other restricted products please provide ID that includes your business name & shipping address via email CMD_NA@vwr.com or fax 484.881.5997 referencing your VWR account number. Acceptable forms of ID are:

  • State issued document with your organization's Federal Tax ID Number
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  • City or County issued Business License
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  • Any other ID issued by the State that includes the business name & address

* ATTN: California Customers may require additional documentation as part of the CA Health & Safety Code. Products that fall under this regulation will be placed on a mandatory 21-day hold after documentation is received. VWR will not lift restrictions for residential shipping addresses.

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The original product is no longer available. The replacement shown is available.
This product is no longer available. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service at 1-800-932-5000.
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