Propargyl-PEG4-NHS ester is an amine reactive PEG linker with an alkyne group. Under the copper catalyzation, alkyne group can react with azide-bearing biomolecules to form a stable triazole linkage. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Propargyl-PEG4-NHS ester is an amine reactive PEG linker with an alkyne group. Under the copper catalyzation, alkyne group can react with azide-bearing biomolecules to form a stable triazole linkage. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
This kit provides a rapid spin column method for the isolation and purification of genomic DNA from both Gram-negative and Gram-positive bacteria in milk samples. It can also be used to process challenging milk samples such as Mastitic milk for example. The kit is highly sensitive and can isolate DNA from a cell density of as little as 10 bacteria contained in 1 mL of milk. Genomic DNA is isolated in 45 minutes, free of inhibitors and ready for any number of downstream applications including PCR, qPCR and Southern Blot analysis, sequencing and more.
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| Kit Specifications | |
| Maximum Milk Input | 1 mL |
| Time to Complete 10 Purifications | 1 hour |
| DNA Yield* | 500 ng to 8 μg |
| Bacteria Species Processed | Gram positive and Gram negative |
| Minimum Detection Limit | 10 bacteria in 1 mL of milk |
*The range of the DNA yield will vary depending upon a number of factors including bacterial species and type of milk (fat content and %)
Storage Conditions and Product Stability
All solutions should be kept tightly sealed and stored at room temperature. The Lysozyme should be stored at -20°C upon arrival, and the Resuspension Solution A should be stored at -20°C after addition of the lysozyme. The lyophilized Proteinase K should be stored at -20°C upon arrival and after reconstitution. This kit is stable for 1 year from the date of shipment.
| Component | Cat. 21550 (50 preps) |
|---|---|
| Resuspension Solution A | 6 mL |
| Buffer SK | 60 mL |
| Wash Solution A | 18 mL |
| Elution Buffer B | 15 mL |
| Proteinase K | 12 mg |
| Lysozyme (powder) | 120 mg |
| Spin Columns | 50 |
| Collection Tubes | 50 |
| Elution Tubes (1.7 mL) | 50 |
| Product Insert | 1 |
The Norgen MidRanger 1 kb DNA Ladder is prepared to ensure quality and batch-to-batch consistency. Our MidRanger contains ten discrete fragments ranging from 300 bp to 5000 bp. This Ladder is ideal for sizing larger PCR products (>1kb) and most cloning applications.
Contents:
1mL of premixed DNA ladder (0.5µg/10µL) in loading buffer (10mM EDTA, 10% glycerol, 0.015% bromophenol blue, and 0.17% SDS).
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MidRanger 1kb DNA Ladder (Cat# 11700) – 100 loads
Ladder Properties:
• Ten discrete fragments ranging from 300 bp to 5000 bp
| Fragment | Size (bp) | Mass (ng) |
| 1 | 5000 | 88 |
| 2 | 4000 | 78 |
| 3 | 3000 | 67 |
| 4 | 2500 | 58 |
| 5 | 2000 | 50 |
| 6 | 1500 | 43 |
| 7 | 1000 | 25 |
| 8 | 700 | 34 |
| 9 | 500 | 33 |
| 10 | 300 | 24 |
Recommended Use:
Mix thoroughly. For best results, load 10µL of DNA ladder per well. For precise mass determination with a densitometer, stain gel after electrophoresis using 0.5µg/mL ethidium bromide for 30-40 minutes. The table above shows the size and mass for each band based on 10µL ladder per well.
Storage:
Stable at room temperature. For longer term storage, -20°C is recommended.
This ladder was standardized using 10µL of DNA per lane on a 0.8 cm thick, 13 x 15 cm, 1.0% agarose gel run in TAE buffer.
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 |
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