endo-BCN-PEG2-alcohol is a click chemistry PEG linker. The BCN group is very reactive with azide-tagged molecules. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
endo-BCN-PEG2-alcohol is a click chemistry PEG linker. The BCN group is very reactive with azide-tagged molecules. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
For the determination of Escherichia coli in drinking water and its source water by multiple tube fermentation method.
MUG permits the rapid detection of Escherichia coli when the medium is observed for fluorescence using a UV light. MUG is hydrolyzed by the enzyme β-glucuronidase which is produced by E. coli to yield a fluorescent end product 4- methylumbelliferone. Trypticase provides the essential nutrients. Lactose is the fermentable carbohydrate. Sodium chloride maintains the osmotic equilibrium. The medium has a strong buffering system to control the pH in the presence of fermentative action. The bile salts inhibit gram-positive bacteria especially the Bacillus species and faecal Streptococci.
| Ingredients | /liter |
| Trypticase or tryptose | 20 g |
| Bile salts No. 3 | 1.5 g |
| Lactose | 5 g |
| K2HPO4 | 4 g |
| KH2PO4 | 1.5 g |
| NaCl | 5 g |
| 4-methylumbelliferyl-β-D-glucuronide (MUG) | 50mg |
| pH6.9±0.2 at 25°C | |
Weigh 37g of dry powder of this product, add 1L of distilled water or deionized water, stir, heat and boil until
completely dissolved, sterilize at 115℃ for 20min, cool to room temperature and set aside.
The following quality control strains were inoculated and cultured at 44.5℃±0.5℃ for 24h. The results are as follows:
| Quality control strains | Growth |
| Escherichia coli ATCC25922 | Blue-white fluorescence is produced under 366nm UV light |
| Salmonella typhimurium ATCC14028 | No fluorescence under 366nm UV light |
| Enterococcus faecalis ATCC29212 | Clear, no fluorescence |
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 the determination of Escherichia coli in drinking water and its source water by multiple tube fermentation method. Principle and Interpretation MUG permits the rapid detec……
Norgen’s HPV (High and Low Risk) TaqMan PCR Lyophilized Kit is designed for the detection of HPV High and Low Risk specific DNA in a real-time PCR based on the use of TaqMan® technology. The lyophilized format is designed to ship the kit at ambient temperature.
Norgen’s HPV (High and Low Risk) TaqMan Lyophilized Probe/Primer and Control Set is designed for the detection of HPV High and Low Risk specific DNA in a real-time PCR based on the use of TaqMan® technology. The lyophilized format is designed to ship the kit at ambient temperature.
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| Component | Cat. TM31550L (100 preps) | Cat. TM31510L (100 preps) |
|---|---|---|
| MDx TaqMan 2X PCR Master Mix (Lyo) | 4 x 350 μL | – |
| Mycoplasma Primer & Probe Mix (Lyo) | 280 μL | 280 μL |
| Mycoplasma Positive Control (Lyo) | 150 μL | 150 μL |
| Nuclease-Free Water (Negative Control) | 3 x 1.25 mL | 1 x 1.25 mL |
| Product Insert | 1 | 1 |
T4 DNA Ligase is an ATP and Mg2+ dependent dsDNA ligase which catalyses the formation of a phosphodiester bond between 3’-hydroxyl and 5’-phosphate termini in duplex DNA, duplex RNA and some DNA/RNA hybrids. T4 DNA Ligase is active on both blunt-end and cohesive-end substrates. It is also completely inactivated by incubating at 70°C for 10 minutes.
This is a high-quality (commercial grade) version of the T4 DNA Ligase. T4 DNA Ligase is recombinantly produced in E. coli. ArcticZymes’ T4 DNA Ligase is extensively tested for contaminating DNase and RNase activities as well as residual host-cell gDNA.
T4 DNA Ligase is an ATP and Mg2+ dependent dsDNA ligase which catalyses the formation of a phosphodiester bond between 3’-hydroxyl and 5’-phosphate termini in duplex DNA, duplex RNA and some DNA/RNA hybrids. T4 DNA Ligase is active on both blunt-end and cohesive-end substrates. It is also completely inactivated by incubating at 70°C for 10 minutes.
