Stabilizer & Preservative

Stabilizers and Preservatives are indispensable functional components in in vitro diagnostic (IVD) reagents, serving distinct yet complementary roles in ensuring the reliability and longevity of diagnostic tests.

Stabilizers are primarily responsible for maintaining the structural integrity and biological activity of critical reagent components, such as enzymes, antibodies, and antigens. They protect these sensitive molecules from degradation caused by physical and chemical stressors, including temperature fluctuations, pH shifts, and oxidation. Common stabilizers include sugars (e.g., trehalose), polyols (e.g., glycerol), and proteins (e.g., BSA), which work collectively to extend the reagent's shelf life and guarantee consistent analytical performance—throughout its stated validity period.

Preservatives,are antimicrobial agents designed to prevent microbial contamination (bacterial and fungal growth) in liquid reagents, especially in multidose containers. By inhibiting or killing microorganisms, preservatives safeguard reagent integrity, prevent changes in pH or turbidity, protect automated instrumentation from biofilm clogging, and ensure patient safety. Their role is crucial for maintaining reagent sterility during repeated use.

Application Area

Immunoassays
Clinical Chemistry
Molecular Diagnostics
Point-of-Care Testing (POCT)
Hematology & Flow Cytometry

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L-Proline, 99%|132204|147-85-3

L-Proline, 99%

Product Information Product Name L-Proline, 99% Brand Name J&K Product Number 132204 CAS 147-85-3 SDS Document View/Download Certificate of Analysis (COA) Search COA not found

2-Phenoxyethanol, 99%, reference material|989824|122-99-6

2-Phenoxyethanol, 99%, reference material

Product Information Product Name 2-Phenoxyethanol, 99%, reference material Brand Name J&K Product Number 989824 CAS 122-99-6 Certificate of Analysis (COA) Search COA not found

Methyl 4-hydroxybenzoate, 99%, reference material|918012|99-76-3

Methyl 4-hydroxybenzoate, 99%, reference material

Product Information Product Name Methyl 4-hydroxybenzoate, 99%, reference material Brand Name J&K Product Number 918012 CAS 99-76-3 Certificate of Analysis (COA) Search COA not found

4-Hydroxybenzoic acid, 99%|506842|99-96-7

4-Hydroxybenzoic acid, 99%

Product Information Product Name 4-Hydroxybenzoic acid, 99% Brand Name J&K Product Number 506842 CAS 99-96-7 SDS Document View/Download Certificate of Analysis (COA) Search COA not found

Glycerol, 99%|262536|56-81-5

Glycerol, 99%

Product Information Product Name Glycerol, 99% Brand Name J&K Product Number 262536 CAS 56-81-5 SDS Document View/Download Certificate of Analysis (COA) Search COA not found

L-Glutathione, 99%, for analysis, reduced|387160|70-18-8

L-Glutathione, 99%, for analysis, reduced

Product Information Product Name L-Glutathione, 99%, for analysis, reduced Brand Name J&K Product Number 387160 CAS 70-18-8 SDS Document View/Download Certificate of Analysis (COA) Search COA not found