Copper Assay Kit - sufficient for 96 colorimetrictests, high purity

Cat. No.: C486478

QUALITÉ & PURETÉ sufficient for 96 colorimetrictests

Spécifications

Spécifications et pureté

sufficient for 96 colorimetrictests

Stockage et expédition

Conditions de stockage de stockage

Store at 2-8°C

Expédié en

Wet ice

Application Protocols

Item-specific, validated protocols, recommended sample preparation, and calculation worksheets are not provided here.

• Not specified for this item; refer to the kit insert/IFU for:
  • Reagent preparation and any reconstitution steps
  • Sample prep guidelines for common matrices (biofluids, lysates, environmental samples)
  • Incubation time/temperature and read wavelength
  • Standard curve preparation and calculation of copper concentration
  • Troubleshooting and interference management

Note: To ensure accuracy and reproducibility, follow only the official protocol supplied with the kit.

Biological Roles

General background on copper in biology (not product-specific):

• Essential trace element: Copper is required as a redox-active cofactor in enzymes such as cytochrome c oxidase, superoxide dismutase (Cu/Zn-SOD), lysyl oxidase, tyrosinase, and dopamine β-hydroxylase.
• Redox chemistry: Alternates between Cu(I)/Cu(II), enabling electron transfer. Mismanagement can drive oxidative stress via Fenton-like reactions.
• Homeostasis: Cellular uptake (e.g., CTR1), intracellular chaperones (ATOX1, CCS), and P-type ATPases (ATP7A/ATP7B) regulate distribution and efflux; metallothioneins buffer labile copper pools.
• Distribution: In blood, copper largely associates with ceruloplasmin and albumin; intracellularly, it localizes to mitochondria, Golgi, and cytosol depending on protein targeting.
• Nutritional and environmental aspects: Both deficiency and excess disrupt metabolism; organisms employ tight regulation to maintain nanomolar free copper levels.
• Analytical relevance: Accurate quantitation of total copper in biofluids or lysates supports studies in metallomics, oxidative stress response, enzyme maturation, and nutrient transport.

Note about this product:

• Item-specific biological roles, targets, or validated matrices are not specified for this kit; refer to the kit documentation for validated sample types, working ranges, and known interferences.

Buffer Applications

This section is not typically applicable to a copper assay kit as a buffer system; the kit may include proprietary buffers, but their compositions are not provided.

• Item-specific buffer details: Not specified for this item; refer to the kit insert/CoA for buffer pH, composition, and compatibility.

General guidance (context only):

• Copper complexation is pH-dependent; assay buffers are selected to optimize reduction/chelation and minimize interference from competing ligands (e.g., EDTA) and thiols.
• If preparing sample buffers, avoid metal-chelating additives unless validated; use high-purity, metal-free water and containers to reduce background copper.
• For turbid or colored matrices, consider matrix-matched blanks or sample cleanup to ensure accurate absorbance readings.

Green Alternatives

Greener practice considerations for copper quantification (general guidance; not product-specific):

• Reagent selection:
  • Prefer aqueous systems and avoid heavy organic solvent use. Many modern copper assays operate entirely in water at near-neutral pH.
  • Choose ligands and reducers with lower hazard profiles where performance allows; avoid cyanide-based or strongly corrosive formulations.
• Waste minimization:
  • Use microplate formats (96/384-well) to reduce per-sample reagent volumes by 5–10× versus cuvettes.
  • Batch multiple samples/standards to minimize repeated preparation and discard of unstable reagents.
• Energy and resource reductions:
  • Conduct assays at ambient temperature when validated, avoiding heating blocks where not necessary.
  • Use reusable glassware where feasible and compatible; otherwise, select low-additive plastics certified metal-free to minimize contamination and rework.
• Safer sample prep alternatives:
  • Where acid digestion is required, consider milder microwave-assisted protocols with reduced acid volumes and closed vessels to minimize emissions (follow institutional safety procedures).

Comparison (literature, qualitative):

• Traditional methods: Some legacy copper tests employ harsh acids or organic extraction—higher hazard and waste.
• Modern aqueous colorimetric assays: Reduced hazard, straightforward waste segregation as aqueous metal-containing waste, often similar or improved sensitivity.

Note: Specific reagents and greener substitutions for this kit are not specified; consult the kit insert and SDS to evaluate substitution feasibility without compromising assay performance.

Pharmaceutical Uses

No therapeutic or clinical claims are made. This kit is for research use only.

General, non-clinical applications in pharmaceutical and bioprocess settings (context; not product-specific):

• Raw material and excipient testing: Screening incoming materials for trace copper contamination that could catalyze oxidation of actives or excipients.
• Process monitoring: Measuring copper leachables from equipment or catalysts in synthetic steps where copper salts or catalysts are used.
• Formulation studies: Assessing copper levels in protein formulations, as free copper can promote oxidation or aggregation; used as part of forced-degradation or stability-indicating studies.
• Cleaning validation: Verifying removal of copper residues from manufacturing lines.
• QC of bioreactor media and feeds: Monitoring trace metal content to maintain consistent cell culture performance.

Item-specific pharmacopeial status or validations: Not specified for this item; refer to internal validation or regulatory guidance for intended QC workflows.

Physical Properties

• Item-specific data: Not specified for this item; refer to CoA/Spec Sheet for the physical properties of each kit component (e.g., buffer composition, pH, chromogenic reagent concentration, standard concentration).

General chemistry knowledge (for context only; not product specifications):

• Typical copper colorimetric complexes show absorbance maxima at (literature, assay-dependent):
  • Bicinchoninate (BCA)–Cu(I): λmax ~562 nm
  • Bathocuproine–Cu(I): λmax ~480–490 nm
  • Neocuproine–Cu(I): λmax ~450–460 nm
• Typical working pH ranges (literature):
  • BCA assays: alkaline conditions (pH ~8–11) to promote reduction/complex stability
  • CUPRAC-type: near-neutral to slightly alkaline (pH ~6–8)
• Typical solubility: These ligands and copper standards are prepared in aqueous buffers; some ligands may be supplied in organic cosolvent or as concentrated stock solutions (details vary by kit and are not specified here).

Practical notes (general):

• Spectrophotometric plate or cuvette readings are performed in the visible range as above; refractive index, density, or melting/boiling points are not relevant to kit use.
• For accurate results, match pathlengths (cuvette vs. microplate) and blank with the kit’s buffer matrix to minimize baseline drift.

Quality and Grades

• Item-specific grade/purity: Not specified for this item; refer to CoA/Spec Sheet.

How assay kit quality is typically defined (general guidance):

• Analytical performance metrics:
  • Linearity range and R2 for standard curves (e.g., low µM to mM copper). Not specified for this item; see kit insert.
  • Limits of detection/quantitation (LOD/LOQ) in specified matrices (buffer, serum, cell lysate). Not specified for this item.
  • Precision (intra-/inter-assay %CV) and accuracy (recovery from spiked samples).
• Optical quality:
  • Low background absorbance of blank reagents and minimal drift over assay time.
  • Defined λmax and extinction coefficient of the chromophore for plate or cuvette use.
• Matrix tolerance:
  • Resistance to interference from chelators (EDTA), thiols (DTT, GSH), proteins, detergents, and other metals (Fe, Zn). Interference profile is kit-specific; consult documentation.
• Traceability and standards:
  • Copper standards are typically traceable to NIST or equivalent primary standards; concentration tolerance and stability are provided in the CoA (not specified here).

Notes on stabilizers and preservatives:

• Some kits include preservatives (e.g., sodium azide) or antioxidants to prolong shelf life; check SDS/insert for presence and handling implications. Absent product data, do not assume specific additives.

Reaction and Applications

Item-specific applications: Not specified for this item; see Manufacturer Applications and kit insert.

General applications for copper assay kits (research use):

• Quantification of total copper in biological matrices: serum/plasma, urine, cell and tissue lysates, culture media, plant extracts.
• Assessment of copper content in food, beverages, and environmental water samples after appropriate sample preparation (digestion/dilution).
• Monitoring of copper uptake/efflux in metallobiology experiments and characterization of copper-binding proteins (with compatible denaturing/reducing conditions).
• Quality control in biochemical preparations (e.g., verifying trace copper in buffers or reagents) and materials science (nanoparticle synthesis supernatants).

Underlying chemistry (literature):

• Reduction–complexation schemes where Cu(II) is reduced to Cu(I) by a reducing agent; Cu(I) then forms a strongly colored complex with α-diimine or bicinchoninate ligands (λmax in visible range). Reaction rate depends on pH, temperature, and ligand excess.
• Direct complexation methods under alkaline conditions can chelate Cu(II) without external reducers if matrix provides reducing equivalents.

Practical tips (general):

• Use metal-free consumables to prevent background copper.
• Prepare fresh standards from a verified stock; matrix-match standards to the sample buffer when possible.
• Include reagent and sample blanks to correct for intrinsic sample color/turbidity.
• Validate recovery by spiking representative samples at low/medium/high copper levels.

Reaction Conditions

Item-specific, validated assay conditions (reagent volumes, incubation time/temperature, and read wavelengths) are not specified for this kit; consult the kit insert.

General literature guidance for common copper colorimetric assays (context only; not product specifications):

• Wavelengths (λmax):
  • BCA–Cu(I): ~562 nm
  • Bathocuproine–Cu(I): ~480–490 nm
  • Neocuproine/CUPRAC–Cu(I): ~450–460 nm
• Temperature/time: Many assays proceed at ambient temperature with incubation from 10 to 60 minutes depending on reagent and matrix; some protocols accelerate at 37–60°C. Use only conditions validated for your kit.
• pH: Alkaline (pH 8–11) for BCA-type; near-neutral to slightly alkaline (pH 6–8) for CUPRAC-type assays.
• Interferences:
  • Chelators (EDTA), thiols (DTT, β-mercaptoethanol, glutathione), and strong reductants/oxidants may suppress or enhance signals.
  • Transition metals (Fe, Zn, Ni) can interfere in some chemistries; masking agents or selectivity of the ligand mitigate this (kit-dependent).
• Calibration:
  • Prepare a multi-point standard curve spanning the expected sample range; matrix-match when feasible.
  • Verify linearity and back-calculate recoveries for spiked samples.
• Measurement:
  • Use matched optical pathlengths; for microplates, correct for pathlength or normalize using reference methods if needed.

These conditions are provided solely as literature context; follow the official protocol packaged with the kit.

Safety and Handling

• Item-specific hazard information: Not specified for this item; refer to the product SDS and CoA/Spec Sheet for definitive GHS classification, signal word, H-statements, and pictograms for each component.
• Storage (from Product Data): Store at 2–8°C. Shipped on wet ice.

General safety guidance for copper assay kits (not product-specific):

• Likely hazards: Many copper assay reagents are irritants; reducers/complexing ligands and standards (Cu salts) can be harmful if swallowed or inhaled. Some formulations may contain surfactants or stabilizers; strong alkali or acids may be present depending on assay chemistry.
• PPE: Wear lab coat, safety glasses, and suitable gloves (e.g., nitrile). Work in a well-ventilated area or fume hood if volatile components or dusts are present.
• Incompatibilities: Avoid mixing chromogenic ligands with strong oxidants or metal-scavenging contaminants (EDTA, thiols) outside of intended use. Keep away from strong acids/bases unless directed by protocol.
• First aid overview: In case of skin/eye contact, rinse with water for at least 15 minutes; remove contaminated clothing. If inhaled, move to fresh air. If ingested, rinse mouth and seek medical attention. Always follow SDS instructions.
• Waste: Collect copper-containing aqueous waste and any organic cosolvents in appropriate containers for hazardous waste disposal per institutional and local regulations.
• Contamination control: Use metal-free plasticware/pipette tips when low-ppb determinations are required; avoid steel needles that may leach metals.

Solvent Selection

This product is an aqueous analytical kit, not a solvent. Solvent selection per se is not directly applicable.

General guidance (context for assay setup):

• Assay matrix: Most copper colorimetric assays are performed in aqueous buffers supplied with the kit or specified in the protocol. Organic solvents can disrupt complex formation or shift spectra; use only if the validated protocol allows.
• Polarity and miscibility (literature context):
  • Aqueous buffers (pH defined) are fully miscible with water and designed to stabilize the Cu–ligand complex.
  • Alcohols or DMSO may be tolerated at low percentages for solubilizing samples, but can alter reduction potentials and background; confirm tolerance in the kit insert (not specified here).
• When to choose alternatives:
  • For samples rich in chelators (e.g., EDTA plasma), consider buffer exchange or dilution in metal-free buffer to reduce interference.
  • For organic-rich samples, perform extraction or evaporation/reconstitution into the assay buffer to maintain compatibility.

Always default to the buffer system and diluents recommended in the kit’s official protocol; do not substitute solvents without verification.

Storage and Reconstitution

• Item-specific storage (from Product Data):
  • Store at 2–8°C.
  • Shipped on wet ice.
• Reconstitution and component stability: Not specified for this item; refer to the kit insert/CoA for details on any lyophilized vials, stock solution stability, light sensitivity, and freeze–thaw guidance.

General handling guidance for assay kits (context only):

• Upon receipt: Inspect for leakage or damage; verify all components against the packing list. Record lot numbers and expiration dates.
• Equilibration: Bring refrigerated components to room temperature before opening to prevent condensation ingress; mix gently to re-dissolve any precipitates.
• Light protection: Many chromogenic ligands are light-sensitive; protect reagents and assembled reaction mixes from direct light as a precaution unless documentation states otherwise.
• Aliquoting: If repeated use is anticipated, aliquot reagents to minimize repeated freeze/thaw or prolonged exposure to air.
• Water quality: Use metal-free, high-purity water for dilutions to minimize background copper.
• Shelf life and on-board stability: Follow the expiration dating and any stated working solution stability (not specified here; see kit insert).

Structure and Identity

This product is a multi-component analytical kit designed to quantify copper in samples; it is not a single chemical entity.

• Item-specific (from Product Data):
  • Product: Copper Assay Kit (SKU: C486478)
  • Form: Multi-reagent kit (exact components not specified here)
  • Storage: 2–8°C; shipped on wet ice
  • Research use: For research use only
• Not specified for this item; refer to CoA/Spec Sheet for: individual reagent identities, Molecular Formula, Molecular Weight, SMILES, InChIKey, CAS.

General chemistry knowledge (for context):

• Typical copper assay chemistries employ one or more of the following principles:
  • Reduction of Cu(II) to Cu(I) followed by chromogenic chelation (e.g., bathocuproine, neocuproine, BCA reagents) producing an orange to purple complex.
  • Direct complexation of Cu(II) by chromogenic/fluorogenic ligands (e.g., bicinchoninate in alkaline conditions) with defined absorbance maxima.
  • CUPRAC-type assays (Cu(II)-neocuproine reduction) operating at near-neutral pH for broader matrix compatibility.
• Structural features involved (literature): α-diimine ligands (neocuproine), azabicyclic donors, or bicinchoninate motifs provide N,O chelation to copper with strong, colored complexes. These are examples and may not be present in this kit.

Note: Because this is a kit, it does not have a single 2D/3D structure; each reagent (buffers, chromophores, standards) has its own identity documented in the kit insert/CoA.

Synthetic Utility

This section is generally not applicable to an assay kit. The Copper Assay Kit is an analytical tool rather than a synthetic reagent.

General context (for completeness):

• While copper compounds are widely used in synthesis (e.g., Ullmann coupling, Chan–Lam coupling, azide–alkyne cycloaddition), those applications relate to copper salts/catalysts rather than an analytical kit.
• If your workflow involves copper-catalyzed steps, this kit can support post-reaction analytics to quantify residual copper in products, washes, or mother liquors after workup.

Item-specific synthetic roles: Not applicable.

Target Specificity

This product does not target a biomolecular epitope (e.g., antibody/ELISA) and has no clone/isotype. It detects total copper content chemically.

• Item-specific details: Not specified for this item; refer to the kit insert for validated sample types and any stated selectivity/interference data.

General note (context):

• Chemical copper assays typically respond to ionic copper (Cu(I)/Cu(II)) converted to a defined oxidation state under assay conditions; specificity versus other metals depends on the chosen ligand and masking conditions (not specified for this kit).

Foire aux questions

How should this product be stored?

Store at 2–8 °C. Refrigerated storage is required to maintain the specified shelf life.

How is this product shipped?

This product ships chilled on wet ice. Unpack on arrival and transfer it to the storage condition stated above.

What documentation is provided?

Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.