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Cell Copper (Cu) Colorimetric Assay Kit (Complexing Method)
SKU: E-BC-K775-M-96
Cell Copper (Cu) Colorimetric Assay Kit (Complexing Method)
| SKU # | E-BC-K775-M |
| Detection Instrument | Microplate reader (575-585 nm) |
| Detection method: | Colorimetric method |
Product Details
Properties
| Synonyms | Cu |
| Sample type | cell |
| Sensitivity | 0.18 μmol/L |
| Detection range | 0.18-5 μmol/L |
| Detection method |
Colorimetric method |
| Assay type | Quantitative |
| Assay time | 10 min |
| Precision | Average inter-assay CV: 3.100% | Average intra-assay CV: 3% |
| Other instruments required | Micropipettor, Vortex mixer, Incubator |
| Storage | 2-8℃ |
| Valid period | 12 months |
Dilution of Sample
The recommended dilution factor for different samples is as follows (for reference only):
| Sample type | Dilution factor |
| 293T cell | 1 |
| Molt-4 cell | 1 |
| Jurkat cell | 1 |
| Hela cell | 1 |
Note: The diluent is double distilled water. For the dilution of other sample types, please do pretest to confirm the dilution factor.
Detection Principle
In acidic condition, the copper ion in the sample react with complexing agent to form a purple complex which has a maximum absorption peak at 580 nm. And copper ion content can be calculated indirectly by measuring the OD value at 580 nm.
Kit Components & Storage
| Item | Component | Size 1(48 T) | Size 2(96 T) | Storage |
| Reagent 1 | Chromogenic Agent A |
3.5 mL × 1 vial | 7 mL × 1 vial | 2-8℃, 12 months, shading light |
| Reagent 2 | Chromogenic Agent B |
Powder × 1 vial | Powder × 2 vials | 2-8℃, 12 months, shading light |
| Reagent 3 | 5 μmol/L Copper Standard | 2.5 mL × 1 vial | 5 mL × 1 vial | 2-8℃, 12 months |
| Reagent 4 | Lysis Buffer | 12 mL × 1 vial | 24 mL × 1 vial | 2-8℃, 12 months, shading light |
| Microplate | 96 wells | No requirement | ||
| Plate Sealer | 2 pieces | |||
Note: The reagents must be stored strictly according to the preservation conditions in the above table. The reagents in different kits cannot be mixed with each other. For a small volume of reagents, please centrifuge before use, so as not to obtain sufficient amount of reagents.
Technical Data:
Parameter:
Intra-assay Precision
Three 239T cell samples were assayed in replicates of 20 to determine precision within an assay (CV = Coefficient of Variation).
| Parameters | Sample 1 | Sample 2 | Sample 3 |
| Mean (μmol/L) | 1.70 | 2.60 | 4.30 |
| %CV | 3.2 | 3.1 | 2.7 |
Inter-assay Precision
Three 239T cell samples were assayed 20 times in duplicate by three operators to determine precision between assays.
| Parameters | Sample 1 | Sample 2 | Sample 3 |
| Mean (μmol/L) | 1.70 | 2.60 | 4.30 |
| %CV | 2.8 | 3.0 | 3.5 |
Recovery
Take three samples of high concentration, middle concentration and low concentration to test the samples of each concentration for 6 times parallelly to get the average recovery rate of 105%.
| Standard 1 | Standard 2 | Standard 3 | |
| Expected Conc. (μmol/L) | 0.8 | 2.2 | 3.6 |
| Observed Conc. (μmol/L) | 0.8 | 2.3 | 3.6 |
| Recovery rate(%) | 101 | 106 | 108 |
Sensitivity
The analytical sensitivity of the assay is 0.18 μmol/L. This was determined by adding two standard deviations to the mean O.D. obtained when the zero standard was assayed 20 times, and calculating the corresponding concentration.
Standard Curve
As the OD value of the standard curve may vary according to the conditions of the actual assay performance (e.g. operator, pipetting technique or temperature effects), so the standard curve and data are provided as below for reference only:
| Concentration (μmol/L) | 0 | 0.5 | 1 | 2 | 2.5 | 3 | 4 | 5 |
| Average OD | 0.049 | 0.059 | 0.072 | 0.092 | 0.103 | 0.113 | 0.134 | 0.159 |
| Absoluted OD | 0.000 | 0.011 | 0.023 | 0.043 | 0.055 | 0.065 | 0.086 | 0.110 |