DBCO-NHCO-PEG4-amine is a carboxyl-reactive building block with extended PEG spacer arm. The hydrophilic PEG spacer arm improves water solubility. In the presence of of activators (e.g. EDC, or HATU), this reagent can be used to derivatize carboxyl groups or activated esters (e.g. The NHS ester) through a stable amide bond. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
DBCO-NHCO-PEG4-amine is a carboxyl-reactive building block with extended PEG spacer arm. The hydrophilic PEG spacer arm improves water solubility. In the presence of of activators (e.g. EDC, or HATU), this reagent can be used to derivatize carboxyl groups or activated esters (e.g. The NHS ester) through a stable amide bond. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
K-LMALMQ
60 assays per kit
| Content: | 60 assays per kit |
| 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: | L-Malic Acid |
| Assay Format: | Spectrophotometer |
| Detection Method: | Absorbance |
| Wavelength (nm): | 505 |
| Signal Response: | Increase |
| Linear Range: | 0.15 to 15 µg of L-malic acid per assay (i.e. 0.007-0.75 g/L with a 20 µL sample volume) |
| Limit of Detection: | 15.4 mg/L |
| Reaction Time (min): | ~ 6 min |
| Application examples: | Wine, beer, fruit juices, soft drinks, candies, fruit and vegetables, bread, cosmetics, pharmaceuticals and other materials (e.g. biological cultures, samples, etc.). |
| Method recognition: | Novel method |
This product has been discontinued (read more).
The L-Malic Acid test kit is suitable for the measurement and analysis of L-malic acid in grapes, grape juice and wine using the MegaQuant™ colorimeter (measurement at 505 nm). Suitable for white and red wines at all stages of the winemaking process.
Show all organic acid assay kits.
Advantages
The L-Malic Acid test kit is suitable for the measurement and analysis of L-malic acid in grapes, grape juice and wine using the MegaQuant™ colorimeter (measurement at 505 nm). Suitable for white and red wines at all stages of the winemaking process.
This kit provides a fast and simple spin column procedure for isolating genomic DNA from saliva samples collected and preserved using Norgen’s Saliva DNA Collection and Preservation Devices (Cat. RU49000), as well as fresh saliva samples.
Saliva DNA purified using Norgen’s kit is of the highest quality, and is compatible with a number of downstream research applications including PCR, Southern Blot analysis, sequencing and microarray analysis.
Saliva represents an excellent non-invasive alternative to blood collection. Human genomic DNA extracted from buccal epithelial cells and white blood cells found in saliva can be used in various applications in diagnostics. Saliva DNA can be used for the detection of biomarkers to diagnose a disease, follow the diseases progress or monitor the effects of a particular treatment. Saliva DNA can also be used to diagnose particular types of infections. Isolation of DNA from saliva has become an attractive alternative to isolation from blood or tissue due to the fact that sample collection is non-invasive, the samples can be collected by individuals with little training, and no special equipment is required. Norgen’s Saliva DNA Isolation Kit provides a fast and simple procedure for isolating genomic DNA from both preserved saliva samples and fresh saliva samples.
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| Kit Specifications | |
| Maximum Saliva Input | 0.5 mL preserved saliva 0.25 mL fresh saliva |
| Average Yield from 0.25 mL of Saliva* | 3 – 7 μg |
| Average Purity (OD260/280) | 1.7 – 2.1 |
| Time to Complete 10 Purifications | 30 minutes |
* Average yield will depending on the donor
Storage Conditions and Product Stability
All solutions should be kept tightly sealed and stored at room temperature. This kit is stable for 1 year after the date of shipment. The kit contains a ready-to-use Proteinase K, which is dissolved in a specially prepared storage buffer. The buffered Proteinase K is stable for up to 1 year after the date of shipment when stored at room temperature.
| Component | Cat. RU45400 (50 preps) |
|---|---|
| Lysis Buffer F | 30 mL |
| Proteinase K in Storage Buffer | 1.2 mL |
| Binding Buffer B | 12 mL |
| Wash Solution A | 18 mL |
| Elution Buffer B | 15 mL |
| Spin Columns | 50 |
| Collection Tubes | 50 |
| Elution Tubes (1.7 mL) | 50 |
| Product Insert | 1 |