Bis-propargyl-PEG2 is a homobifunctional PEG linker with two propargyl groups. The propargyl groups forms triazole linkage with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Bis-propargyl-PEG2 is a homobifunctional PEG linker with two propargyl groups. The propargyl groups forms triazole linkage with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Norgen’s FBS Exosome Depletion Kits provides a quick and easy protocol for the depletion of bovine exosomes from FBS prior to using it as a growth supplement in your culture medium. The FBS recovered from the depletion process is exosome-depleted and does not contain any quantifiable bovine miRNAs. Moreover, the exosome-depleted FBS will support the growth of your cells of interest similar to the non-depleted FBS. Norgen’s kits allow for the processing of different FBS volumes. The depletion is based on Norgen’s proprietary resin. These kits provide a clear advantage over other available kits in that they do not require ultracentrifugation, any special instrumentation, precipitation reagents or any protease treatments. More importantly, the depletion process is an inexpensive method for exosome depletion from FBS, as compared to the expensive current ready-to-use exosome-depleted media available on the market.
Background
Most culture medium used for the growth and propagation of cells in culture require the addition of fetal bovine serum (FBS) as a growth supplement to media. FBS is obtained from bovine (cow) serum, and therefore contains large quantities of bovine exosome vesicles. These exosomes may interfere with some types of studies, or may lead to unreliable results when studying the exosomes shed from your cells of interest in normal culture conditions. Therefore, the use of exosome-depleted FBS is highly recommended for many types of studies.
FBS Exosome Depletion Kit (Slurry Format)
For FBS volumes ranging from 140 mL to 280 mL.
FBS Exosome Depletion Kit (Column Format)
For FBS volumes ranging from 120 mL to 240 mL.
Figure 1 / 3
Click for expanded view
| Kit Specifications | |
| Sample Type | Fetal Bovine Serum |
| Sample Volume Range | Up to 140 mL (FBS Exosome Depletion Kit I (Slurry Format) Up to 280 mL (FBS Exosome Depletion Kit II (Slurry Format) |
| Depletion | Deplete exosome-sized vesicle |
| Bovine miRNA | No detectable bovine miRNA |
| Time to Complete 6 Purifications | 40 minutes |
Storage Conditions and Product Stability
All buffers should be kept tightly sealed and stored at room temperature. This kit is stable for 2 years after the date of shipment.
| Component | Cat. 61100 (6 preps) | Cat. 61400 (12 preps) | Cat. 61200 (6 preps) | Cat. 61300 (12 preps) |
|---|---|---|---|---|
| ExoC Buffer | 2 x 1.5 mL | 8 mL | 2 x 1.5 mL | 8 mL |
| Slurry E | 12.5 mL | 2 x 12.5 mL | – | – |
| Maxi Spin Column | – | – | 6 | 12 |
| Product Insert | 1 | 1 | 1 | 1 |
,
,
Product Description
High Purity DNA Purification Kit Fast Extract Isolate Nucleic Acids
Product parameters:
| Reagent component (WLD8201-ES,2Tubes/box) | ||
| Component | Specification | Quantity |
| LD-1 | 800μL＝0.8mL | 1 Tube |
| LD-2 | 200μL＝1.2mL | 1 Tube |
Product features and advantages:
| Product features | |
| Simplicity | The operation is simple, and the DNA template for amplification can be obtained in just one step (conventional 5min) |
| Security | Non-toxic environmental protection, room temperature transport and storage |
| Universality | The lysate can be used for isothermal nucleic acid amplification |
Product application:
It is used for pre-processing and nucleic acid release of swab samples and plant tissue samples, rapidly cracking all kinds of common samples without purification; The sample lysate can be directly used as a template for amplification reaction.
Tips: Its reverse combined with our constant temperature amplification reagent for nucleic acid detection.
| Sample processing type | |
| Liquid sample | Samples of plants or tissues |
| Serum, blood, saliva, ascites and other samples, swab leach solution | Brain, muscle, viscera, leaves, fruit and other samples, take liquid supernatant |
For selective enrichment culture of Listeria monocytogenes in food.
Tryptone, proteose peptone, meat extract, yeast paste powder provide nitrogen sources, vitamins, amino acids, and growth factors; sodium chloride can maintain a balanced osmotic pressure; sodium dihydrogen phosphate and potassium dihydrogen phosphate as buffering agents; esculin are fermentable sugars; lithium chloride and other antibiotics can inhibit Gram negative bacteria and most Gram positive bacteria.
| Ingredients | /liter |
| Enzymatic digest of animal tissues ( Proteose peptone) | 5.0g |
| Enzymatic digest of casein ( Tryptone) | 5.0g |
| Meat extract | 5.0g |
| Yeast extract | 5.0g |
| Sodium chloride | 20.0g |
| Disodium hydrogen phosphate dihydrate | 12.0g |
| Potassium dihydrogen phosphate | 1.35g |
| Aesculin | 1.0g |
| Lithium chloride | 3.0g |
| pH7.2±0.2 at 25°C | |
Suspend 57.4g in 1 L of distilled or deionized water. Heat with frequent agitation and boil to completely dissolve the powder. Distribute into flasks. Autoclave at 121℃ for 15 minutes. Cool to 45-50℃,aseptically add the contents of 1 vial of Fraser Selective Supplement (SR0120) to each 225 mL of base to prepare FB1 solution; Add one reagent (SR0130) to each100 mL of FB2 culture medium to prepare FB2 enrichment solution.
Cultural characteristics observed after incubation at 35-37°C for 46~50 hours
| Quality control strains | Growth | Characteristics |
| Listeria monocytogenes ATCC19115 + Escherichia coli ATCC25922 + Enterococcus faecalis ATCC29212 | >20 cfu On PALCAM | Gray to black colony count with black halo |
| Escherichia coli ATCC25922 | < 100 colonies on TSA | Inhibition |
| Enterococcus faecalis ATCC29212 |
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.
On June 14, 2024
ISO 11290
Intended Use For selective enrichment culture of Listeria monocytogenes in food. Principle and Interpretation Tryptone, proteose peptone, meat extract, yeast paste powder provide nitrogen ……
