Biotin-PEG4-alkyne is a PEG linker containing a biotin group and a terminal alkyne. Biotin is useful for affinity-based applications such as pull-down assays or for ligating with streptavidin proteins while terminal alkynes are used in copper (I) click chemistry with azides to form stable triazoles with a target molecule. The inclusion of a PEG linker in this molecule improves its aqueous solubility.
Biotin-PEG4-alkyne is a PEG linker containing a biotin group and a terminal alkyne. Biotin is useful for affinity-based applications such as pull-down assays or for ligating with streptavidin proteins while terminal alkynes are used in copper (I) click chemistry with azides to form stable triazoles with a target molecule. The inclusion of a PEG linker in this molecule improves its aqueous solubility.
K-CITR
SKU: 700004274
72 assays (manual) / 720 assays (microplate) / 840 assays (auto-analyser)
| Content: | 72 assays (manual) / 720 assays (microplate) / 840 assays (auto-analyser) |
| Shipping Temperature: | Ambient |
| Storage Temperature: | Short term stability: 2-8oC, Long term stability: See individual component labels |
| Stability: | > 2 years under recommended storage conditions |
| Analyte: | Citric Acid |
| Assay Format: | Spectrophotometer, Microplate, Auto-analyser |
| Detection Method: | Absorbance |
| Wavelength (nm): | 340 |
| Signal Response: | Decrease |
| Linear Range: | 1.0 to 100 µg of citric acid per assay |
| Limit of Detection: | 0.491 mg/L |
| Reaction Time (min): | ~ 5 min |
| Application examples: | Grape juice, wine, beer, fruit juices, soft drinks, tea, dairy products (e.g. cheese), meat, processed meat, vegetable and fruit products, bakery products, paper, pharmaceuticals, cosmetics and other materials (e.g. biological cultures, samples, etc.). |
| Method recognition: | Methods based on this principle have been accepted by MEBAK, OIV, EU, ISO2963, AOAC and IFU22 (NOTE: If the enzyme oxaloacetate decarboxylase is present in the sample, some of the oxaloacetate product is converted to pyruvate. Therefore, to ensure citric acid is measured quantitatively, D-lactate dehydrogenase (D-LDH) is employed to efficiently convert any pyruvate produced into D-lactate and NAD+). |
The Citric Acid test kit is a flexible and simple method for the rapid and reliable measurement and analysis of citric acid (citrate) in foods, beverages and other materials.
Note for Content: The number of manual tests per kit can be doubled if all volumes are halved. This can be readily accommodated using the MegaQuantTM Wave Spectrophotometer (D-MQWAVE).
View our full list of organic acid test kits.
Advantages
The Citric Acid test kit is a flexible and simple method for the rapid and reliable measurement and analysis of citric acid (citrate) in foods, beverages and other materials.
Specification
| Optical Microscope | 0.7-4.5X zoom objective | ● |
| 10X Eyepiece,view by eyepiece together | ||
| Working Distance | 100mm | ● |
| Display | 8 inch color monitor,resolution 640*480,OSD menu,with cross-line function | ● |
| Digital Camera | 1/3 Sensor chip,80OTVL(PAL)OSD menu | O |
| Output Interface | HDMI,VGA Interface | ● |
| Magnification | 12.6-81X(customized magnification is available according to customers’need) | O |
| Accessories | DC 12V 2A power supply,USB cable,CD-ROM | ● |
| Model | MZ45D | |
| Opticalmagnification | 0.7X—5X | |
| Zoom Ratio | 1:7 | |
| Eyepiece | Standard 0.4X | |
| Option | 1X | |
| Objective | 0.3X,0.5X,0.75X,1X,1.5X,2X | |
| Video System | Optional 1/2,1/3 CCD digital camera | |
| WorkingDistance | 100mm | |
| Accessories | lllumination | |
| Various Stands | ||
| Model | MZ45 | |
| Opticalmagnification | 0.7X—5X | |
| Zoom Ratio | 1:7 | |
| Eyepiece | Standard 0.4X | |
| Option | 1X | |
| Objective | 0.3X,0.5X,0.75X,1X,1.5X,2X | |
| Video System | Optional 1/2,1/3 CCD digital camera | |
| WorkingDistance | 00mm | |
| Accessories | umination | |
| Various Stands | ||