EEM Medium - BioReagent

Cat. No.: E1528677

QUALITÉ & PURETÉ BioReagent

Storage

Room temperature

Shipped In

Normal

Vue d’ensemble

For enrichment of intestinal pathogens.

Spécifications

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

• Manufacturer Applications: Not specified for this item.

General protocol examples for cell culture media (literature; adapt to your cells and this product’s documentation)

1. Thawing and preparation

• If supplied as liquid: Bring to room temperature or 37 °C water bath. Do not overheat. Inspect for clarity and container integrity.
• If supplied as powder: Reconstitute with cell culture-grade water to the specified volume; adjust pH/osmolality per instructions; sterile-filter (0.22 μm). Physical form for this item is Not specified; refer to CoA/Spec Sheet.

2. Routine maintenance of adherent cells

• Warm medium to 37 °C. Aspirate spent medium, rinse with sterile PBS if required, add fresh medium. For passaging, detach with enzyme or non-enzymatic dissociation buffer, neutralize, centrifuge if needed, resuspend in fresh EEM Medium, and reseed at appropriate density.

3. Suspension cultures

• Maintain target viable cell density by partial medium exchange or perfusion. Monitor viability, pH indicator, and osmolality.

4. Supplementation

• Add sterile-filtered serum, antibiotics, or growth factors to desired final concentrations as dictated by your protocol. Document lot numbers and final concentrations.

Quality checks

• Periodically test for mycoplasma and monitor morphology and doubling time after any lot change.

Biological Roles

General function of culture media (literature; not item-specific)

• Provide essential nutrients (carbon/energy sources, amino acids, vitamins), inorganic ions, and buffering capacity to sustain cellular homeostasis ex vivo.
• Support metabolic pathways including glycolysis, TCA cycle, nucleotide and protein biosynthesis via balanced availability of glucose, glutamine or alternatives, and cofactors.
• Maintain osmotic balance and membrane potential through controlled concentrations of Na+, K+, Ca2+, Mg2+, Cl−, phosphate, and bicarbonate.
• Buffer pH near physiological values to preserve enzyme activity and signaling; bicarbonate/CO2 and/or zwitterionic buffers (e.g., HEPES) are used in many formulations.

Use-case alignment

• Different cell types require distinct nutrient densities and growth factor environments. If EEM Medium is specified for a model system, it likely reflects empirical optimization for growth rate, morphology, and function (composition Not specified for this item).

Experimental considerations

• Media composition shapes cellular phenotype: metabolite abundance can modulate redox balance, mitochondrial function, and response to perturbagens (literature).
• Phenol red, if present, can have weak estrogenic activity in some assays; indicator presence for this item is Not specified—consult CoA/Spec Sheet.

Research Use Note

• For research use only. Not for diagnostic procedures or clinical applications.

Buffer Applications

Applicability

• As a culture medium, EEM Medium inherently functions as a buffered aqueous environment, but it is not a conventional analytical buffer like PBS, Tris, or HEPES solutions prepared in isolation.

General guidance (literature; not item-specific)

• Bicarbonate/CO2 buffering: many media maintain pH ~7.2–7.4 in a 5% CO2 incubator. Outside controlled CO2, pH can drift alkaline.
• HEPES supplementation: for workflows outside CO2 incubators (e.g., microscopy), HEPES-buffered media can improve pH stability. Verify compatibility with your cells and detection modality.
• Ionic strength/osmolality: critical for cell physiology; do not dilute media with water or concentrate by evaporation without verifying osmolality.

Practical notes

• For electrophysiology or enzyme assays, defined buffers with minimal organic components may be preferable to complex media to reduce background.
• If using EEM Medium as a vehicle/control in assays, match supplements (e.g., serum) and pH/temperature to experimental conditions.

Item-specific details

• Buffer system, pH, and osmolality: Not specified for this item; refer to CoA/Spec Sheet.

Green Alternatives

Context

• For culture media, “green” considerations focus on waste minimization, energy use, and packaging rather than solvent substitution.

Sustainability strategies (general, not item-specific)

• Form factor: powders for on-site preparation reduce shipping weight/volume relative to ready-to-use liquids, at the cost of water and energy for sterilization on site. Physical form for this item is Not specified; refer to CoA/Spec Sheet.
• Packaging: select larger bottle sizes or bag systems to reduce plastic per liter; recycle secondary packaging where facilities exist.
• Shelf-life management: plan usage to avoid expired waste; aliquot into working volumes to reduce contamination-related discards.
• Energy: consolidate incubator usage; avoid unnecessary light exposure if medium contains photo-labile buffers or vitamins (literature).

Comparative considerations

• Ready-to-use sterile liquid: maximizes convenience and consistency; higher shipping footprint.
• Powdered medium: lower transport emissions; requires validated water quality (cell culture grade), accurate reconstitution, and sterile filtration.

Waste handling

• Treat spent media as biohazardous; neutralize disinfectants before drain disposal if permitted by institutional EHS. Avoid bleach with HEPES-containing solutions due to potential formation of reactive species (literature caution).

Note

• No changes to composition or supplier process are implied. For product-specific environmental data (e.g., recyclability, take-back programs), consult the product documentation.

Pharmaceutical Uses

Scope

• This product is sold for research use only. It is not intended for diagnostic use, therapeutic administration, or GMP manufacturing.

Relevant non-clinical uses (literature; not item-specific)

• Preclinical research: maintenance of cell banks, assay development, and process development studies to inform media selection for upstream bioprocess R&D.
• Analytical support: vehicle for in vitro ADME/tox, target engagement, or mechanism-of-action assays when compatible with detection methods.
• Formulation R&D: screening of excipient interactions with cells or biologics under controlled conditions; however, complex media may confound some readouts.

Regulatory considerations

• If translation toward GMP or clinical manufacturing is anticipated, qualify a supply of medium meeting appropriate standards (e.g., animal-origin-free, TSE/BSE statements, adventitious agent testing). Such statuses are Not specified for this item; consult documentation.

Good practice

• Document lot numbers and perform change control when switching lots or suppliers to maintain data integrity in regulated-adjacent research settings.

Physical Properties

Item-specific facts (from Product Data)

• Physical state/appearance: Not specified for this item; refer to CoA/Spec Sheet.
• pH, osmolality, conductivity, sterility: Not specified for this item; refer to CoA/Spec Sheet.

General/literature expectations for cell culture media (not item-specific)

• Typical medium form: aqueous sterile solution or dry powder for reconstitution (varies by product line).
• Typical pH (at 25 °C): ~7.0–7.6 for many bicarbonate- or HEPES-buffered media (literature); exact value is formulation-dependent.
• Typical osmolality: ~260–340 mOsm/kg (literature range for mammalian culture media).
• Density: ~1.00–1.02 g/mL for aqueous media at 20–25 °C (literature).
• Refractive index: ~1.333–1.340 for aqueous media at 20–25 °C (literature).
• Solubility: fully miscible with water; not miscible with most nonpolar organic solvents (literature).
• Color: water-clear to red/orange if phenol red is present; color can shift with pH or oxidation (literature). Phenol red presence is formulation-dependent.

Notes

• Do not treat these literature values as product specifications. For experiment-critical attributes (pH, osmolarity, formulation, sterility), consult the item’s CoA/Spec Sheet.

Quality and Grades

Item-specific facts

• Grade/Purity: BioReagent (as listed for SKU E1528677).

What BioReagent grade generally implies (literature/industry usage; not a legal specification)

• Intended for laboratory research workflows, including cell culture, molecular biology, and biochemistry, where low bioburden and controlled composition are critical.
• Typically produced under documented procedures with lot traceability. Many BioReagent products are sterile-filtered and endotoxin-controlled, but exact sterility/endotoxin limits are product-specific and must be verified on the CoA/Spec Sheet for this item.

Quality considerations for cell culture media

• Sterility and bioburden: confirm by CoA (CFU limits, sterility test method). Not specified for this item.
• Endotoxin: low endotoxin is desirable for sensitive cell types; limit Not specified for this item.
• pH/osmolality: lot-specific acceptance ranges ensure performance; Not specified for this item.
• Mycoplasma: some suppliers test finished media; status Not specified for this item.

Practical guidance

• On receipt, record lot/batch and date. For performance-critical work, pre-qualify a lot with your cell line.
• If supplements (serum, antibiotics, growth factors) are user-added, document sources and final concentrations to maintain reproducibility.
• For any regulatory or QC needs, obtain and review the item’s CoA/Spec Sheet; do not infer specifications from general literature.

Reaction and Applications

Scope

• Not typically used as a solvent or reagent in chemical synthesis. Instead, EEM Medium functions as a cell culture environment.

Cell culture applications (general/literature)

• Routine maintenance and expansion of mammalian or other eukaryotic cells when the formulation is appropriate for the target cell type.
• Assay workflows: viability/toxicity assays, reporter assays, transfection experiments, and imaging, provided the medium’s buffering and indicator content are compatible with the assay’s detection method.
• Adaptation: gradual transition of cells from a previous medium to EEM Medium can mitigate stress; monitor doubling time, morphology, and viability.

Operational tips (general)

• Warm to 20–37 °C before use to avoid cold shock; do not exceed 37 °C for prolonged periods to prevent component degradation.
• Maintain aseptic technique; minimize time that containers are open. If using bicarbonate-buffered media, equilibrate in 5% CO2 incubator prior to critical assays to stabilize pH.
• Supplements: add sterile-filtered additives (serum, antibiotics, growth factors) as needed; mix gently to avoid foaming.

Item-specific application claims

• Manufacturer Applications: Not specified for this item.

Performance verification

• Because composition details are not provided here, pre-validate with your cell line and endpoint assays before large-scale experiments.

Reaction Conditions

Not applicable to chemical synthesis

• EEM Medium is not intended for use as a reaction solvent or reagent; therefore, classical reaction conditions (temperature, catalysts, yields) are not relevant.

Operational conditions for cell culture (literature; not item-specific)

• Temperature: many mammalian cells are cultured at 37 °C; other systems may require 27–34 °C (e.g., insect cells) or 28.5 °C (zebrafish). Use conditions appropriate to your model.
• Atmosphere: 5% CO2 is commonly used for bicarbonate-buffered media. Oxygen tension may be adjusted (e.g., 1–5% O2 for hypoxia studies).
• Humidity: maintain high humidity in incubators to reduce evaporation and edge effects.
• Medium exchange: frequency depends on cell density and metabolism; typical intervals are 2–3 days, monitoring pH indicator and nutrient depletion (literature guidance).
• Sterility: employ aseptic technique and sterile consumables. If reconstituting from powder, use cell culture-grade water and sterile filtration (0.22 μm) as appropriate.

Item-specific parameters

• Buffer system, pH setpoint, osmolality, and recommended CO2 level: Not specified for this item; refer to CoA/Spec Sheet.

Safety and Handling

Item-specific hazard data

• GHS Classification: Not specified for this item; refer to SDS.
• Signal Word / H-Statements / Pictograms: Not specified for this item; refer to SDS.

General safety guidance for cell culture media (literature/best practice)

• PPE: wear lab coat, gloves, and safety glasses. Use sterile technique in a biosafety cabinet (Class II) when handling open containers to prevent contamination.
• Incompatibilities: avoid mixing with strong oxidizers or acids/bases that can alter pH or denature components. Do not autoclave finished, heat-labile media; sterilize by filtration if required (0.22 μm), per composition.
• Biological safety: although media itself is typically non-hazardous, once used with cells it should be treated as biohazardous and disposed according to institutional biosafety procedures.
• First aid (general): rinse skin or eyes with water if contacted. If ingested or inhaled as aerosols, move to fresh air and seek medical attention as needed. Always consult the SDS for authoritative response measures.
• Special risks: precipitation or color change may indicate contamination or degradation (e.g., microbial growth, pH drift). Do not use compromised medium.

Authoritative source

• Always defer to the product-specific SDS and CoA for hazard classifications, handling, and spill/cleanup instructions.

Solvent Selection

Applicability

• EEM Medium is a biological formulation used to sustain cells; it is not selected as a reaction solvent in synthetic chemistry. Solvent selection in this context concerns compatibility with aqueous, buffered systems and supplements.

General properties for media systems (literature)

• Polarity: highly polar, water-based matrix; dielectric constant approximates that of water (~78 at 25 °C), modulated by solutes.
• Miscibility: fully miscible with water; immiscible with most hydrophobic solvents. Limited miscibility with lower alcohols; organic cosolvents are generally avoided due to cytotoxicity.

Use scenarios

• Direct use for cell maintenance, expansion, and assays compatible with aqueous buffers.
• Supplementation: may be combined with heat-inactivated serum, antibiotics/antimycotics, growth factors, and specific nutrients. Verify compatibility and sterile technique.

Comparison notes (literature, non-item-specific)

• Bicarbonate-buffered media require 5% CO2 atmosphere to maintain pH; HEPES-buffered formulations afford improved pH stability in ambient CO2 but can be photosensitive at high concentrations.
• Phenol red-free options are preferred for colorimetric/fluorescent assays to minimize background; verify if this item contains indicator—Not specified for this item; refer to CoA/Spec Sheet.

Recommendation

• Choose this medium when your cell model has been qualified in EEM Medium or when documentation specifies it. Otherwise, perform a side-by-side adaptation study against your incumbent medium.

Storage and Reconstitution

Item-specific facts (from Product Data)

• Storage Conditions: Room temperature.
• Shipped In: Normal.
• Appearance/physical form: Not specified for this item; refer to CoA/Spec Sheet.

General guidance (not item-specific)

• Liquid media: many finished, sterile media are stored at 2–8 °C to maximize shelf life; however, follow the item label exactly. If this product explicitly permits room temperature, protect from light and use by the indicated expiry. Avoid repeated warming/cooling cycles; aliquot if frequent access is required.
• Powder media: store tightly closed in a cool, dry place. Reconstitute with cell culture-grade water; adjust pH/osmolality as directed; sterile-filter (0.22 μm). Label with preparation date and use within recommended timeframe.
• Light sensitivity: vitamins and some buffers (e.g., riboflavin, HEPES) are light sensitive (literature); store in the dark when possible.
• Asepsis: handle in a biosafety cabinet to prevent contamination. Wipe exteriors with 70% ethanol before BSC entry.

Stability and expiry

• Do not use if turbidity, precipitates (not attributable to cold), color shifts, or compromised packaging are observed.

Reconstitution specifics for this item

• Not specified for this item; refer to CoA/Spec Sheet.

Research Use Note

• For research use only.

Structure and Identity

Item-specific facts (from Product Data)

• SKU: E1528677
• Product Name: EEM Medium
• Grade/Purity: BioReagent
• Storage Conditions: Room temperature (per item listing)
• Shipped In: Normal
• Chemical identifiers: CAS — Not specified for this item; refer to CoA/Spec Sheet. SMILES — Not specified for this item; refer to CoA/Spec Sheet. InChIKey — Not specified for this item; refer to CoA/Spec Sheet. Molecular formula — Not specified for this item; refer to CoA/Spec Sheet. Molecular weight — Not specified for this item; refer to CoA/Spec Sheet.

General description (formulations/mixtures)

• EEM Medium is a formulated, multi-component cell culture medium. As a complex mixture, it does not have a single SMILES or InChIKey. Composition typically includes inorganic salts, energy sources, amino acids, vitamins, and buffering agents, and may be supplied with or without serum/supplements (literature, composition varies by manufacturer).
• Structural features (conceptual): aqueous solution or reconstitutable blend containing ionic species (Na+, K+, Ca2+, Mg2+, Cl−, PO4 3−), organic metabolites (e.g., glucose), and buffering species (e.g., bicarbonate/HEPES in some media; literature). No discrete “2D structure” applies to the overall product because it is a formulation rather than a single compound.

Research Use Note

• For research use only. Not for human or veterinary use.

Synthetic Utility

Not typically applicable

• EEM Medium is a biological culture formulation and is not used as a reagent or building block in chemical synthesis. It lacks discrete functional groups amenable to classical organic transformations in a controlled, stoichiometric manner.

Related laboratory utility (general)

• As an aqueous, buffered matrix, it can serve as the medium for biocatalytic reactions or cell-based transformations when the cell system is the catalyst; however, composition-specific compatibility must be verified.
• For chemical synthesis or analytical derivatization, defined buffers (e.g., phosphate, Tris) or organic solvents are generally preferred to avoid interference from complex components of culture media.

Item-specific data

• No synthetic utility claims are provided for this item.

Target Specificity

Not applicable

• This product is a culture medium, not a biological affinity reagent (e.g., antibody, ligand, or probe). Therefore, no target, epitope, clone, or species reactivity applies.

Item-specific data

• None provided.

Foire aux questions

How should this product be stored?

Store at room temperature.