DBCO-PEG24-Maleimide is a PEG linker containing a DBCO moiety and a terminal primary maleimide group. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
DBCO-PEG24-Maleimide is a PEG linker containing a DBCO moiety and a terminal primary maleimide group. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
These kits are designed for the rapid spin column removal of endotoxins from previously purified DNA. Norgen’s spin columns bind DNA while endotoxins, salts and other contaminants are washed away. These kits reduce endotoxins to 0.1 EU/μg DNA or less providing plasmid DNA that is immediately ready for transfections or other endotoxin-sensitive applications. Typical recovery of DNA is >90% of the starting sample.
Endotoxin Removal Kit (Mini)
This kit is designed for the rapid spin column removal of endotoxins from up to 25 µg of previously purified DNA. The convenient spin column procedure can be completed in approximately 20 minutes.
Endotoxin Removal Kit (Midi)
This kit is designed for the rapid spin column removal of endotoxins from up to 200 μg of previously purified DNA. The convenient spin column procedure can be completed in approximately 30 minutes.
Endotoxin Removal Kit (Maxi)
This kit is designed for the rapid spin column removal of endotoxins from up to 1 mg of previously purified DNA. The convenient spin column procedure can be completed in approximately 30 minutes.
About Endotoxins
Endotoxins (also called lipopolysaccharides), are cell-membrane components of Gram-negative bacteria such as E. coli. Endotoxins are released during the lysis step of plasmid purification and significantly reduce transfection efficiencies in endotoxin sensitive cell lines. Therefore, the removal of endotoxins from plasmid preparations is often necessary prior to the use of the DNA in such downstream applications.
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| Kit Specifications | |
| Maximum DNA Input | 25 μg |
| Final Endotoxin Level | ≤ 0.1 EU/µg DNA |
| Size of DNA Purified | Up to 13,000 bp |
| Maximum DNA Volume Input | 100 μL |
| Average Recovery | > 90% |
| Time to Complete 10 Purifications | 20 minutes |
Storage Conditions and Product Stability
All solutions should be kept tightly sealed and stored at room temperature. This kit is stable for 2 years after the date of shipment.
| Component | Cat. 22700 (25 preps) | Cat. 52200 (10 preps) | Cat. 21900 (4 preps) |
|---|---|---|---|
| Buffer SK | 15 mL | 60 mL | 60 mL |
| Wash Solution H | 18 mL | 18 mL | 18 mL |
| Elution Buffer I | 6 mL | 12 mL | 12 mL |
| Endotoxin Removal Solution | 1.5 mL | 1.5 mL | 1.5 mL |
| Precipitation Solution | – | 1.5 mL | 1.5 mL |
| Spin Columns (assembled with Collection Tubes) | – | 10 | 4 |
| Spin Columns | 25 | – | – |
| Collection Tubes | 25 | – | – |
| Elution Tubes (1.7 mL) | 25 | – | – |
| Elution Tubes (15 mL) | – | 10 | – |
| Elution Tubes (50 mL) | – | – | 4 |
| Product Insert | 1 | 1 | 1 |
For enriching bile-tolerant Gram-negative bacteria in the microbiological examination of pharmaceutical products.
Pancreatic digest of gelatin provide protein, vitamins and amino acids; glucose carbon source; disodium hydrogen phosphate and potassium dihydrogen phosphate as a buffer; ox bile and brilliant green as selective antibacterial agent, inhibiting the growth of non-Enterobacteriaceae.
| Ingredients | /liter |
| Pancreatic digest of gelatin | 10g |
| Glucose monohydrate | 5g |
| Dehydrated ox bile | 20g |
| Potassium dihydrogen phosphate | 2g |
| Disodium hydrogen phosphate dihydrate | 8g |
| Brilliant green | 15mg |
| pH7.2±0.2 at 25°C | |
Suspend 45g in 1L of distilled water,stir until completely dissolved and dispense 100 mL into test tubes , heat at 100 °C for 30 min in a waterbath or flowing steam.
The following quality control strains were inoculated and cultured at 30-35℃ for 24h-48h. The results are as follows:
| Quality control strains | Inoculum (CFU) | Growth |
| Escherichia coli ATCC8739 | < 100 | Good growth |
| Pseudomonas aeruginosa ATCC9027 | ||
| Staphylococcus aureus ATCC6538 | > 100 | Inhibited |
2-30℃，Keep container tightly closed, avoid direct sunlight.
Use before expiry date on the label.
1. When weighing the dehydrated medium, please wear masks to avoid causing respiratory system discomfort
2. Keep container tightly closed after using to prevent clumping.
Microbiological contamination was disposed by autoclaving at 121°C for
30 minutes.
Intended Use For enriching bile-tolerant Gram-negative bacteria in the microbiological examination of pharmaceutical products. Principle and Interpretation Pancreatic digest of gelatin pro……
HiPure RNA Clean Up Kit provides a rapid and easy method for the purification and concentrate RNA from enzymatic reactions or for desalting the RNA samples. RNA purified using HiPure RNA Clean Up Kit is ready for all downstream applications such as RT-PCR, Northern blotting, mRNA purification, nuclease protection, and in vitro translation.
Specifications
| Features | Specifications |
| Main Functions | Purification and concentration of RNA（mRNA>200nt or miRNA）from transcription products, DNase cleavage products, labeled products, and crude RNA products |
| Applications | Sequencing, ligation, enzyme digestion, RT-PCR, labeling, etc. |
| Purification method | Mini spin column |
| Purification technology | Silica technology |
| Process method | Manual (centrifugation or vacuum) |
| Sample type | Crude RNA, enzymatic reaction solution |
| Sample amount | ≤100μl |
| Recovery | 90% |
| Elution volume | ≥15μl |
| Time per run | ≤15 minutes |
| Liquid carrying volume per column | 800μl |
| Binding yield of column | 100μg |
The HiPure system uses a simple bind-wash-elute procedure. Binding buffer is added directly to the sample or other enzymatic reaction, and the mixture is applied to the column. Nucleic acids adsorb to the silica membrane in the high-salt conditions provided by the buffer. Impurities are washed away and pure RNA is eluted with a small volume of low-salt buffer provided or water, ready to use in all subsequent applications.
Advantages
Kit Contents
| Contents | R214402 | R214403 |
| Purification Times | 50 Preps | 250 Preps |
| Buffer GXP | 30 ml | 120 ml |
| Buffer RW2 | 20 ml | 2 x 50 ml |
| RNase-Free Water | 20 ml | 60 ml |
| HiPure RNA Mini Columns I | 50 | 250 |
| 2 ml Collection Tubes | 50 | 250 |
Storage and Stability
The Kit can be stored dry at room temperature (15-25°C) and are stable for at least 18 months under these conditions. The entire kit can be stored at 2-8°C, but in this case buffers should be redissolved before use. Make sure that all buffers are at room temperature when used.
HiPure RNA Clean Up Kit provides a rapid and easy method for the purification and concentrate RNA from enzymatic reactions or for desalting the RNA samples. RNA purified using HiPure RNA Clean Up Kit is ready for all downstream applications such as RT-PCR, Northern blotting, mRNA purification, nuclease protection, and in vitro translation.
