TGC Liquid Medium (with Agar) - BioReagent

Cat. No.: T1528608

GRADE & PURITY BioReagent

Storage

Room temperature

Shipped In

Normal

Panoramica

For sterility testing, contains agar

Specifications

Specifiche e purezza

BioReagent

Condizioni di conservazione di stoccaggio

Room temperature

Spedito in

Normal

Grado

BioReagent

Product Line

Prodotti biologici

Application Protocols

The following are general, literature-based workflows for agar-containing, ready-to-use liquid media. Adjust to your SOPs and consult the item label/CoA for lot-specific details.

A. Preparing pour plates

• Warm the container in a 45–50 °C water bath until fully liquefied. Do not overheat/boil.
• Clean the exterior, disinfect the cap, and work in a clean area (biosafety cabinet if required).
• Aseptically dispense 15–20 mL per 90 mm Petri dish. Allow to solidify on a level surface. Dry plates (lid ajar) in a sterile environment as needed to remove surface moisture.

B. Supplementation (optional)

• Add sterile-filtered additives (e.g., antibiotics, indicators) to liquefied medium cooled to ~45–50 °C. Mix gently to avoid bubbles.

C. Inoculation and incubation

• For spread plates: Spread 100 µL of sample/dilution on the surface; incubate inverted at organism-appropriate temperature (e.g., 20–37 °C, literature guidance).
• For pour plates: Pipette sample into an empty sterile plate, add ~15 mL liquefied medium, swirl gently, allow to set, then incubate inverted.

D. Quality checks

• Include uninoculated sterility controls per lot.
• Perform growth-promotion verification with relevant control strains when required by QA.

Note: Volumes, temperatures, and times are general guidance; item-specific parameters are not specified for this product.

Biological Roles

As a culture medium, TGC Liquid Medium (with Agar) serves as a supportive matrix for microbial growth rather than acting as a discrete biochemical effector.

• Functional role: Provides carbon, nitrogen, minerals, and growth factors for the cultivation of heterotrophic microorganisms (general literature for TGC-type media). Agar provides a semi-solid surface for colony formation and spatial separation.
• Nutritional profile (general): Complex peptones/tryptones contribute peptides, amino acids, and vitamins; glucose (if present in the TGC formulation) serves as a readily metabolizable carbon source. Exact composition for this SKU is not specified; refer to CoA/Spec Sheet.
• Biological implications: Medium richness and carbohydrate content can influence colony morphology, pigmentation, and growth rate. Agar concentration affects motility assays and diffusion-based tests.
• Use context: Research and quality control workflows (environmental monitoring, general microbiology) where non-selective recovery is desirable. This product is labeled For research use only and is not intended for clinical diagnostics or therapeutic applications.

Buffer Applications

Not typically applicable. This product is a complex growth medium, not a defined buffering system.

• pH control: Microbiological media often contain intrinsic buffering capacity from phosphates or amino acid side chains (general literature), but exact buffering species and pH range for this SKU are not specified; refer to CoA/Spec Sheet.
• Recommendation: If strict buffering is required for experimental design (e.g., pH-sensitive enzyme assays), use a defined buffer system and, if needed, overlay or supplement the medium accordingly.

Green Alternatives

While this is not a solvent or reagent typically evaluated under green chemistry metrics, sustainable practice considerations apply.

• Renewable components: Agar is a seaweed-derived, renewable polysaccharide (literature). Using agar-based media avoids petroleum-derived synthetic gellants.
• Ready-to-use format: If supplied sterile and ready-to-pour, this can reduce in-lab energy and water consumption (less autoclave time, fewer glassware washes). Confirm format on label/CoA.
• Waste minimization: Prepare only the required volume to reduce biohazard waste. Solid agar plates can be made in smaller batch sizes to control expiration and discard rates.

Comparison (general):

• Agar vs. Gelatin: Agar remains solid at typical incubation temperatures (30–37 °C) and is microbially less degradable than gelatin, reducing plate liquefaction and waste.
• Dehydrated media vs. ready-to-use: Dehydrated media minimize shipping weight/packaging but require autoclaving and vessel cleaning. Ready-to-use media save time and can reduce energy if produced efficiently at scale.

Note: Environmental impact varies by local utilities, scale, and workflow. Choose formats aligning with your laboratory’s sustainability goals and QA needs.

Pharmaceutical Uses

Direct therapeutic or clinical diagnostic uses are not applicable. This product is designated For research use only.

Relevant pharma/biomanufacturing-adjacent contexts (general literature):

• Environmental monitoring and microbial limits testing in research and non-clinical QC labs may employ non-selective agar media for enumeration and recovery studies (method suitability, growth promotion). Suitability of this specific SKU for regulated QC must be determined by the end-user’s QA and is not specified.
• Process development and strain banking in R&D may use non-selective agar media for colony isolation and maintenance prior to upstream screening.

No pharmacopeial status, compendial equivalency, or specific regulatory compliance claims are provided for this item; consult the CoA/Spec Sheet and your quality system requirements.

Physical Properties

Item-specific specifications are not provided for this SKU; consult the lot CoA/SDS for definitive values.

• Appearance: Not specified for this item; refer to CoA/Spec Sheet.
• Phase state at room temperature: As an agar-containing medium, it typically solidifies at room temperature; the product name indicates a liquid medium with agar (likely intended to be melted and poured) — verify with item label/CoA.
• pH (at 25 °C): Not specified for this item; refer to CoA/Spec Sheet. (Many microbiological media target pH ~7.0 ± 0.2, literature.)
• Osmolality: Not specified for this item; refer to CoA/Spec Sheet.
• Density/viscosity: Not specified for this item; refer to CoA/Spec Sheet.
• Sterility: Not specified for this item; refer to CoA/Spec Sheet.

General literature data for agar-containing media (for context only):

• Agar gelation (gelling) temperature: typically ~32–40 °C; melting temperature ~80–90 °C (hysteresis between gelation and melting).
• Agar concentration effects: 1.2–2.0% w/v yields firm plates; lower concentrations yield softer gels for motility assays.
• Solubility profile: Nutrient components are water-based; medium is aqueous and incompatible with most organic solvents.

Practical notes (general): Warm to 45–50 °C to liquefy and pour plates while minimizing condensation. Avoid overheating/boiling which can caramelize sugars or alter nutrient quality (literature). Always confirm item-specific handling on the label/CoA.

Quality and Grades

• Grade: BioReagent (per Product Data). This designation indicates suitability for general biological and microbiological laboratory work, emphasizing low levels of inhibitory contaminants and consistent performance in culture-based applications. It does not imply clinical/diagnostic use.
• Item-specific quality attributes: Not specified for this item; refer to CoA/Spec Sheet for pH, sterility status, performance testing (e.g., growth promotion), and lot release criteria.
• Growth-promotion testing (general literature): Many ready-to-use media lots are qualified by demonstrating growth of representative organisms and selectivity (if applicable). For non-selective TGC-type media, robust recovery of environmental and waterborne bacteria/yeasts is often used.
• UV/metal/peroxide content: Not applicable or not typically reported for complex media. Not specified for this item; refer to CoA/Spec Sheet.
• Stabilizers/preservatives: Not specified for this item; refer to CoA/Spec Sheet. Ready-to-use sterile media typically contain no antimicrobial preservatives to avoid inhibiting target organisms.

Recommendations:

• Verify lot-specific sterility and pH on the CoA before critical work.
• Document growth-promotion verification in-house when required by QA systems (e.g., environmental monitoring, method validation).

Reaction and Applications

This section is adapted to highlight laboratory applications since chemical reactions are not the primary use.

Typical laboratory applications (general literature for TGC-style agar media):

• Enumeration and cultivation of heterotrophic bacteria from environmental, food, and water samples when a non-selective, nutrient-balanced medium is desired.
• Preparation of pour plates, spread plates, or roll tubes for colony isolation and counting.
• Maintenance of environmental isolates and general-purpose subculture when rich but non-selective conditions are needed.
• Potential use as a base medium for supplementation (e.g., carbohydrates, indicators, selective agents) to tailor for specific organisms or assays.

Practical tips:

• Liquefy medium by heating; pour plates at ~45–50 °C to minimize condensation and thermal stress to microbes.
• For quantitative assays, ensure sample diluents are isotonic and compatible with the target organisms.
• Validate growth-promotion with control strains relevant to your application.

Item-specific application claims are not provided in the Product Data; confirm suitability with small-scale trials and consult the CoA for any performance testing results.

Reaction Conditions

Not applicable to chemical reaction optimization. For microbiological use, see general handling conditions below (not item-specific specifications):

General culture conditions (literature guidance):

• Liquefaction/pouring: Heat to melt agar; pour plates at ~45–50 °C in sterile Petri dishes. Allow to solidify at room temperature on a level surface.
• Incubation: Common ranges 20–37 °C depending on organism. Aerobic incubation in inverted plates reduces condensation. Exact temperatures/times are organism- and method-dependent.
• Supplementation: Add heat-labile additives (e.g., antibiotics, chromogenic substrates) to cooled, liquefied medium under aseptic conditions.

Item-specific incubation parameters, pH, and sterility are not provided in the Product Data; refer to CoA/Spec Sheet and your SOPs.

Safety and Handling

Hazard classification and GHS details are not provided in the Product Data. Always consult the product SDS for authoritative safety information.

• GHS classification/Pictograms/Signal word/H-statements: Not specified for this item; refer to SDS.
• Primary laboratory hazard: While the medium itself is typically of low intrinsic chemical hazard, it efficiently supports microbial growth. Treat all used media, plates, and inoculated materials as biohazardous. Follow institutional biosafety procedures (BSL-appropriate).
• PPE: Lab coat, gloves, and safety glasses. Use heat-resistant gloves when handling hot/liquefied medium (~45–60 °C). Work near a flame or in a certified biosafety cabinet as dictated by organism risk group.
• Handling: Minimize contamination by using aseptic technique. Avoid creating aerosols. Do not ingest. Avoid contact with skin/eyes when hot.
• Incompatibilities (general): Strong oxidizers and reactive chemicals are not typically used with nutrient media. Avoid microbial cross-contamination.
• First aid (overview): In case of skin contact with hot medium, cool with running water; seek medical attention for burns. If splashed in eyes, rinse with water for several minutes and seek medical advice. If inhaled aerosol or ingested, follow institutional first-aid procedures and consult SDS.
• Waste: Autoclave or apply approved disinfection before disposal of any used medium. Follow local regulations for biohazardous waste.

Solvent Selection

Not typically applicable. This product is an aqueous microbiological growth medium; it is not used as a solvent.

• Medium matrix: Water-based with agar as the gelling polymer (literature). Organic solvent use is inappropriate and can denature nutrients or compromise gel properties.
• Practical tip: If dilution or supplementation is required (e.g., antibiotics, indicators), add sterile aqueous stocks after cooling the liquefied medium to ~45–50 °C to protect heat-labile components (general guidance).

Storage and Reconstitution

• Storage conditions (from Product Data): Room temperature. Protect from contamination. If the product is intended to be sterile and ready-to-use, minimize repeated heating/cooling cycles and keep containers tightly closed.
• Shipping: Normal (per Product Data).
• Reconstitution: Not applicable if supplied as a ready-to-use liquid. If gelled at room temperature, re-liquefy by warming to ~45–50 °C in a water bath before dispensing (general guidance). Do not autoclave unless the product is explicitly labeled as non-sterile and suitable for sterilization; check the label/CoA.
• Freeze–thaw: Avoid freezing; ice crystal formation can fracture agar networks and alter performance (literature).
• Shelf life/expiry: Not specified for this item; refer to CoA/Spec Sheet and container label. Discard if contamination, precipitation unrelated to gelation, color change, or dehydration is observed.
• Aseptic handling: Use sterile technique to prevent contamination of the remaining volume during repeated use. Consider aliquoting into sterile bottles or tubes if frequent access is expected.

Structure and Identity

This product is a complex, undefined culture medium blend, not a single, well-defined molecule. Consequently, conventional single-compound identifiers are inapplicable.

• Item: TGC Liquid Medium (with Agar)
• Type: Complex microbiological growth medium containing agar (solidifying agent)
• Composition nature: Peptone/tryptone- and carbohydrate-based nutrients with gelling polysaccharide (agar) — typical for TGC-style media (general literature); exact formulation for this SKU is not specified.
• Molecular formula: Not applicable to complex mixtures (not specified for this item; refer to CoA/Spec Sheet.)
• Molecular weight: Not applicable to complex mixtures (not specified for this item; refer to CoA/Spec Sheet.)
• SMILES / InChI / InChIKey / CAS / CID: Not applicable for this complex medium (not specified for this item; refer to CoA/Spec Sheet.)

2D/structural description (general):

• Agar is a linear galactan polysaccharide (agarose fraction) with alternating 3-linked β-D-galactopyranose and 4-linked 3,6-anhydro-α-L-galactopyranose units (literature). Nutrient components (e.g., tryptone/yeast extract/glucose, if present) are heterogeneous mixtures of peptides, amino acids, vitamins, and sugars.

Note: Where chemical identifiers are requested, cite the catalog and lot-specific CoA; mixture products do not possess a single set of molecular identifiers.

Synthetic Utility

Not applicable. This product is not a synthetic building block or reagent and is not typically used to conduct chemical transformations.

• Guidance: For purposes of chemical synthesis, refer to appropriate reagents and solvents. For biological cultivation and enumeration tasks, see the Application Protocols and Reaction & Applications sections.

Target Specificity

Not applicable. This is not an antibody, probe, or targeted binding reagent. It is a non-selective culture medium intended to support growth of a broad range of heterotrophic microorganisms (general literature). No selective agents or target organisms are specified for this item; refer to CoA/Spec Sheet.

Domande frequenti

How should this product be stored?

Store at room temperature.