Antibiotic Medium 40 (USP) - BioReagent

Cat. No.: A1528625

GRADE & PURITY BioReagent

Storage

Room temperature

Shipped In

Normal

Vue d’ensemble

For microbiological assay of antibiotic potency

Specifications

Spécifications et pureté

BioReagent

Conditions de stockage de stockage

Room temperature

Expédié en

Normal

Grade

BioReagent

Product Line

Produits biologiques

Application Protocols

Item-specific tested applications, recommended dilutions, and controls are not provided in the Product Data.

• For validated protocols (e.g., antibiotic potency assays using this medium), refer to the applicable USP monograph and the lot CoA/Spec Sheet. No additional protocol details are specified for this item.

Biological Roles

• Nature of product: Not a single biomolecule but a nutrient medium designed to support growth and standardized antibiotic response of microorganisms.
• Functional role (literature, general microbiology):
  • Supplies assimilable carbon, nitrogen (peptides, amino acids), vitamins, and minerals to support robust microbial growth under controlled conditions.
  • Provides buffering capacity to maintain pH within a range suited to the target assay organisms, reducing variability in antibiotic activity readouts.
  • When solidified (if agar is part of the formulation), establishes a semi-solid matrix enabling radial diffusion of antibiotics to form interpretable inhibition zones in diffusion assays.
• Performance attributes of pharmacopeial antibiotic media (general):
  • Reproducible growth promotion for defined organisms.
  • Low background interference with antimicrobial activity, allowing standardized potency comparisons.
  • Consistency across lots when prepared to specified mass-per-liter and pH.
• Scope limitations:
  • Not optimized for fastidious organisms unless explicitly stated by the monograph/CoA.
  • Osmolality, specific nutrient composition, and selective agents (if any) must be verified on the CoA/Spec Sheet for your application.

Buffer Applications

This product is a complex culture medium, not a discrete buffering reagent.

• Applicability: While antibiotic media generally possess intrinsic buffering capacity, they are not used as stand‑alone buffer systems in biochemical assays. For precise buffering needs (e.g., enzymology, chromatography), choose defined buffers (phosphate, Tris, HEPES) designed for that purpose.
• For pH targets and buffering range of the working medium used with this product, consult the CoA/Spec Sheet and the applicable USP method; item-specific values are not provided here.

Green Alternatives

• Environmental considerations for culture media workflows (general):
  • Dehydrated media minimize transport of water and reduce shipping mass relative to ready-to-use liquids.
  • Single-use plastics (plates, tubes) dominate the waste footprint; consider validated reuse where feasible (glassware) or high‑recycled‑content plastics.
• Options and trade-offs (literature/general):
  • Dehydrated powder vs. pre-poured disposable plates:
    • Dehydrated powder: Lower packaging waste and shipping weight; requires energy/water for sterilization and pouring; higher operator time.
    • Pre-poured plates: Higher packaging and shipping footprint; reduced in-lab energy use; improved lot-to-lot plate uniformity.
  • Energy efficiency:
    • Consolidate autoclave loads and use jacketed, well-maintained sterilizers to reduce steam and electricity consumption.
  • Chemical minimization:
    • Avoid unnecessary disinfectant overuse by employing validated contact times and concentrations; prefer less hazardous disinfectants where effective.
• Sustainable purchasing tips:
  • Right-size package quantities to minimize expiration-related waste.
  • Document media performance to extend use-life of opened containers when permissible by your quality system (desiccant use, controlled humidity).
• This section provides general sustainability considerations; there are no item-specific “green” certifications specified. Refer to your institutional sustainability program for implementation.

Pharmaceutical Uses

• Regulatory context (non-clinical): Used in pharmaceutical and biopharmaceutical quality control laboratories for microbiological assays of antibiotic potency and related system-suitability tests as described in pharmacopeial chapters (USP and harmonized texts). No therapeutic/clinical use.
• Typical roles in manufacturing/QC (general, literature):
  • Release and stability testing support for antibiotic drug substances and products via microbiological assays.
  • Method suitability/growth promotion checks for compendial microbial tests when specified.
  • Training/qualification matrices for aseptic technique and assay execution.
• Documentation: For GMP use, maintain traceability (lot numbers, CoA, SDS), record water quality, sterilization parameters, and growth-promotion test results.
• Compliance note: The product name references a USP medium; verify actual conformance (formulation, pH, performance) on the lot-specific CoA/Spec Sheet before deploying in regulated assays.

Physical Properties

• Appearance: Not specified for this item; refer to CoA/Spec Sheet.
• Solubility: Intended for reconstitution in purified/distilled water to prepare a defined working medium (literature, culture media class). Exact solubility/mass-per-liter is lot- and formulation-specific; see CoA/Spec Sheet.
• pH (working solution): Not specified for this item; refer to CoA/Spec Sheet. Pharmacopeial media typically specify a pH range at 25 °C for performance (literature).
• Melting/boiling point, density, refractive index, logP: Not applicable/Not determined for complex dehydrated mixtures; not specified for this item.
• Hygroscopicity: Dehydrated media are generally moisture-sensitive; protect from atmospheric humidity to preserve performance (literature, general for culture media).
• Physical behavior on heating (literature): If agar is present, gels on cooling after sterilization; if broth only, forms a clear to slightly opalescent solution when fully dissolved. Specific behavior is formulation-dependent; verify with CoA/Spec Sheet.
• Note: No item-specific physicochemical specifications are provided here. For quantitative preparation parameters (g/L, target pH, clarity), consult the lot CoA/Spec Sheet and the applicable pharmacopeial method.

Quality and Grades

• Grade: BioReagent — suitable for biological research applications where consistency, low bioburden, and performance characteristics are important.
• USP designation in name: “Antibiotic Medium 40 (USP)” indicates the product is intended for use following United States Pharmacopeia procedures for antimicrobial assays. Verify lot-specific conformity (composition, pH, growth-promotion performance) on the CoA/Spec Sheet; do not assume compliance without documentation.
• What to expect in the CoA/Spec Sheet (typical for this category):
  • Formulation or reference to pharmacopeial monograph
  • Preparation instructions (mass per liter), target pH at 25 °C, and sterilization guidance
  • Growth-promotion and inhibitory performance checks with defined test strains (literature practice for USP media)
• Stabilizers/antifoams: Not specified for this item; refer to CoA/Spec Sheet.
• UV cut-off, trace metals, endotoxin, and bioburden: Not specified for this item; refer to CoA/Spec Sheet.
• Recommendation: For regulated workflows (GMP/QC), retain CoA, SDS, and any media performance test results with batch records. Perform internal growth promotion testing upon receipt/opening per your quality system.

Reaction and Applications

While not a chemical reagent for synthesis, Antibiotic Medium 40 (USP) is used as a functional matrix in antimicrobial assays and microbiological quality control.

• Intended applications (literature, pharmacopeial context):
  • Antibiotic potency/assay testing using agar diffusion or turbidimetric methods as described in pharmacopeial microbiological assay chapters.
  • Growth-promotion testing and method suitability checks for the organisms specified in the relevant monograph.
  • General microbiological workflows where a standardized nutrient profile is required to ensure consistent antibiotic response.
• Practical tips (general):
  • Prepare according to the lot CoA/Spec Sheet; ensure complete dissolution and correct pH prior to sterilization.
  • For diffusion assays, pour plates of uniform depth and allow adequate drying to achieve reproducible zone sizes; avoid surface moisture and bubbles.
  • Standardize inoculum density using your validated method; maintain consistent incubation temperature and time to minimize variability.
  • Include system suitability with reference antibiotic standards each run; use control plates to verify absence of contamination.
• Notes:
  • Specific organisms, incubation parameters, and analyte concentrations are defined by your method/monograph and should be followed exactly.
  • Do not substitute water quality, preparation mass-per-liter, or pH outside the CoA/Spec Sheet without revalidation.

Reaction Conditions

This section provides general preparation conditions for dehydrated microbiological media; these are literature-based and not item-specific. Always follow the lot CoA/Spec Sheet and applicable pharmacopeial monograph.

• Reconstitution solvent: Purified/distilled water of suitable microbiological quality.
• Mass per liter: Not specified for this item; refer to CoA/Spec Sheet.
• Dissolution: Add powder to water with stirring. Heat as needed to fully dissolve; avoid scorching. If agar is present, bring to near-boil to ensure complete melting.
• Sterilization: Autoclave in suitable vessels (e.g., 121 °C, 15 min, literature general). Allow pressure to normalize before removal. Do not over-sterilize to prevent nutrient degradation.
• pH: Adjust only if instructed by the CoA/Spec Sheet/monograph. Record pH at 25 °C after sterilization/cooling as required by your quality system.
• Plate pouring (if solid medium): Cool to ~45–55 °C before pouring to minimize condensation and ensure even gelation (literature). Dry plates to remove surface moisture before use.
• Storage of prepared media: Use promptly or store under validated conditions (e.g., refrigerated, protected from light; duration per your SOP). Monitor for contamination, dehydration, or pH drift.
• System suitability: Verify growth-promotion and inhibition performance with specified organisms and reference antibiotic standards prior to use in assays (per pharmacopeial practice).

Safety and Handling

• GHS classification, signal word, pictograms, H‑statements: Not specified for this item; refer to SDS for authoritative hazard information.
• General laboratory precautions (literature/best practice for dehydrated media):
  • Avoid dust generation; particulates may cause mechanical irritation to eyes/respiratory tract. Use local exhaust or handle in a clean enclosure when weighing.
  • Wear appropriate PPE: lab coat, safety glasses, and nitrile gloves. Use a dust mask/respirator if airborne dust cannot be controlled.
  • Avoid inhalation and ingestion. Wash hands thoroughly after handling.
• Biohazard note: The dry product is non-sterile. Once reconstituted and inoculated with microorganisms, all materials (media, vessels, disposables) must be treated as biohazardous. Decontaminate by autoclaving or validated chemical disinfectants prior to disposal (follow institutional biosafety procedures).
• Incompatibilities (general): Strong oxidizers; moisture/humidity can cause caking and performance drift. Store away from acids/bases that release corrosive vapors.
• First aid overview (general): Rinse eyes/skin with water for several minutes if contacted. Move to fresh air if dust inhaled. Seek medical attention if irritation persists. Always consult the SDS for detailed guidance.
• Thermal processing: Use caution when autoclaving; vent loosely to prevent container rupture. Allow pressure to normalize before opening.

Solvent Selection

This product is a dehydrated culture medium intended to be reconstituted with high‑purity water; organic solvent selection is not applicable.

• Primary diluent: Purified/distilled water of appropriate grade for microbiological media (e.g., water meeting pharmacopeial requirements; literature). The exact water quality should follow your method and quality system.
• Practical notes:
  • Use freshly prepared, deionized water free of inhibitory residuals (chlorine, heavy metals). Rinse glassware thoroughly.
  • If agar-containing, heat to dissolve fully before sterilization; avoid localized overheating that may cause caramelization of carbohydrates (general media practice).
• If solvent compatibility or alternative diluents are needed for a specialized method, consult the applicable USP monograph and the product CoA/Spec Sheet.

Storage and Reconstitution

• Storage (as supplied): Room temperature (per Product Data). Keep tightly sealed in the original container. Protect from humidity; include desiccant if available. Store away from reactive chemicals and corrosive vapors.
• Shipping: Normal (per Product Data).
• Shelf life/expiry: Not specified for this item; refer to CoA/Spec Sheet and product label.
• Reconstitution:
  • Use purified/distilled water of appropriate microbiological quality.
  • Follow the lot CoA/Spec Sheet for the exact mass-per-liter and target pH.
  • Mix with vigorous stirring; heat to aid dissolution. If agar-containing, ensure complete melting before sterilization.
  • Sterilize as directed by your method/SOP (commonly by autoclaving). Do not filter-sterilize if agar is present. For broth-only preparations, membrane filtration may be used where appropriate (general guidance).
• Post-preparation handling:
  • If plates are prepared, allow to set and dry under aseptic conditions; store at validated temperature and duration per your quality system.
  • If broth is prepared, dispense aseptically into sterile containers and store under validated conditions.
• Research use only: For research and laboratory use. Not for diagnostic or therapeutic use.

Structure and Identity

• Item type: Complex, dehydrated culture medium blend formulated for antimicrobial testing per pharmacopeial practices.
• Compound/mixture: Mixture (multi‑component). No single, discrete molecular structure.
• Molecular formula: Not specified for this item; refer to CoA/Spec Sheet.
• Molecular weight: Not specified for this item; refer to CoA/Spec Sheet.
• SMILES: Not applicable to complex mixtures.
• InChIKey: Not applicable to complex mixtures.
• CAS: Not specified for this item; refer to CoA/Spec Sheet.
• Structural features (general, literature):
  • Typically comprises nutrient sources (e.g., peptones/tryptones), mineral salts, and buffering components; some pharmacopeial “Antibiotic Media” include agar when used as solid assay media. Exact composition is defined by the relevant pharmacopeial monograph and the lot CoA.
  • Functional group landscape is heterogeneous (amides, carboxylates, carbohydrates, amino acids, peptides, phosphates/sulfates) arising from complex biological digests and salts.
• 2D description in words (general): A granular/hygroscopic powder representing a heterogeneous mixture of low‑molecular‑weight nutrients, peptides, and inorganic ions designed to reproducibly support microbial growth and antibiotic diffusion/response in potency assays (literature).

Synthetic Utility

Not a synthetic building block or reagent. As a complex nutrient medium, it has no conventional role in chemical synthesis, retrosynthesis, or named reactions.

• If your workflow involves chemical modification of antibiotics or bioassay-guided fractionation, use this medium downstream for biological evaluation rather than as part of synthetic steps.

Target Specificity

Not applicable. This product is not an antibody or affinity reagent.

• Item-specific target/epitope/clone/isotype: Not specified for this item; refer to CoA/Spec Sheet.