For the rapid detection and enumeration of Escherichia coli.
Principle:
Peptone and yeast extract powder provides carbon and nitrogen sources and trace elements; sodium chloride maintains osmotic equilibrium; agar as medium coagulant; dodecyl sulfate inhibit Gram-positive bacteria; chromogenic substrate and large intestine coli β- glucuronidase enzyme specific reaction, hydrolysis of the substrate, the release of the color groups produce green colonies on the light yellow plate.
Formulation (per liter):
Peptone :15.0g
Yeast extract powder: 3.0g
Sodium chloride: 5.0g
Sodium lauryl sulfate:0.1g
Agar: 12.0g
Chromogenic substrate 6.5g
Final pH 7.0 ± 0.2
How to use:
1. Weigh 41.6g of the product, adding 1.0L distilled or deionized water, heated to boiling stirring until completely dissolved, dispensing into flask, 115 autoclaved for 10minutes.
2. Take 25.0g or 25.0ml of sample with sterile procedures , added to the flask containing 225.0mL of sterile phosphate buffered saline (or saline) , shaken thoroughly homogenized with a homogenizer or a 1:10 dilution of 1min solution, diluted 1:10 and then continue to select the appropriate serial dilutions of three, the two plates inoculated with each dilution, poured dissolved by heating and cooled to about 45 medium.
3, observe the results.
Quality Control
This product appears light yellow after the pouring on plate, these strains were inoculated after 36 ± 1 18 ~ 24h culture growth in the following table.
Bacteria name Bacteria NO. Growth Situation Feature
Escherichia coli ATCC25922 good green colonies
Citrobacter ATCC8090 good colorless colonies
Salmonella typhimurium CMCC50115 good colorless colonies
Enterococcus faecalis ATCC29212 suppressed —–
Storage: Store in a dark, cool and dry place, tighten the caps immediately after use. Storage period of two years.
Other Products
D2111 HiPure Gel DNA Mini Kit
Product Info
Document
Product Info
Introduction
HiPure Gel Pure DNA Kit uses proprietary chemistry and HiPure technology to recover DNA fragments between 60bp-10kbp with yields exceeding 80%. DNA is suitable for ligations, PCR, sequencing, restriction digestion, or various labeling reactions. In addition, this kit can be also used to recover DNA directly from enzymatic reactions such as PCR and enzyme digestion reactions.
Details
Specifications
Features
Specifications
Main Functions
Recover DNA fragments >100bp from agarose gel(<0.5g), purification of DNA from PCR, enzymatic reaction solution or crude gDNA
Applications
PCR, NGS, labeling, ligation and enzyme digestion, etc.
Purification method
Mini spin column
Purification technology
Silica technology
Process method
Manual (centrifugation or vacuum)
Sample type
Agarose gel, PCR products, enzyme products
Sample amount
Agarose gel: ≤500mg
Recovery
≥80%
Elution volume
≥15μl
Time per run
≤20 minutes(1-24 samples)
Liquid carrying volume per column
800µl
Binding yield of column
35µg
Principle
The HiPure system uses a simple bind-wash-elute procedure. Gel slices are dissolved in a buffer containing a pH indicator, allowing easy determination of the optimal pH for DNA binding, and the mixture is applied to the column. Nucleic acids adsorb to the silica-gel membrane in the high-salt conditions provided by the buffer. Impurities are washed away and pure DNA is eluted with a small volume of low-salt buffer provided or water, ready to use in subsequent applications.
Advantages
High recovery efficiency – ≥80% DNA recovery
General – recover DNA from gel or enzyme-driven reaction solutions such as PCR
Fast – isolation can be completed in 10-15 minutes by column gel method
Great cost-effectiveness performance
Kit Contents
Contents
D211102
D211103
Purification Times
100 Preps
250 Preps
Buffer GDP
120 ml
250 ml
Buffer DW2
50 ml
2 x 50 ml
Elution Buffer
20 ml
30 ml
HiPure DNA Mini Columns II
100
250
2 ml Collection Tubes
100
250
Storage and Stability
The Kit should be stored dry at room temperature (15-25°C) and are stable for at least 18 months under these conditions. If any precipitates form in the buffers, warm at 37℃ to dissolve.
Experiment Data
Document
HiPure Gel Pure DNA Kit uses proprietary chemistry and HiPure technology to recover DNA fragments between 60bp-10kbp with yields exceeding 80%. DNA is suitable for ligations, PCR, sequencing, restriction digestion, or various labeling reactions. In addition, this kit can be also used to recover DNA directly from enzymatic reactions such as PCR and enzyme digestion reactions.
Urine Exosome and Free-Circulating RNA Isolation Kits
Product Info
Document
Product Info
Overview
Isolate all sizes of RNA, including microRNA, irrespective of size or GC content, without bias
Versatile sample input ranges
Isolate all sizes of free-circulating RNA, including microRNA
Bind and elute all RNA irrespective of size or GC content, without bias
The purified exosomal RNA is free from any circulating RNA-binding proteins
No phenol extractions, Proteinase K treatment nor carrier RNA required
No time-consuming ultracentrifugation, filtration nor special syringes are required
No precipitation reagents nor overnight incubation required
Concentrate isolated exosomal RNA and free-circulating RNA into a flexible elution volume ranging from 50 µL to 100 µL
Purification is based on spin column chromatography that uses Norgen’s proprietary resin separation matrix
These kits provide a fast, reliable and convenient method to sequentially isolate and concentrate exosomal RNA as well as Free-Circulating RNA from different urine sample volumes. The purification is based on spin column chromatography that employs Norgen’s proprietary resin. These kits are designed to isolate all sizes of RNA, including microRNA, irrespective of size or GC content, without bias. These kits provide a clear advantage over other available kits since they do not require any special instrumentation, protein precipitation reagents, extension tubes, phenol/chloroform or protease treatments. Moreover, the kits allow the user to elute into a flexible elution volume ranging from 50 µL to 100 µL. The RNA isolated from the purified exosomes is free from any protein-bound circulating RNA and is of the highest integrity. Moreover, the free-circulating, protein-bound, RNA is free from any exosomal RNA. The purified RNA can be used in a number of downstream applications including real time PCR, reverse transcription PCR, Northern blotting, RNase protection and primer extension, and expression array assays.
Urine Exosome and Free-Circulating RNA Isolation Mini Kit
For sample volumes ranging from 250 µL to 1 mL.
Urine Exosome and Free-Circulating RNA Isolation Midi Kit
For sample volumes ranging from 2 mL to 10 mL.
Urine Exosome and Free-Circulating RNA Isolation Maxi Kit
All sizes, including miRNA and small RNA (< 200 nt)
Elution Volume
50 – 100 µL
Time to Complete 10 Purifications
35 – 40 minutes
Average Yields*
Variable depending on specimen
*Please check page 4 of the product insert for the average yields and the common RNA quantification methods.
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. It is recommended to warm Lysis Buffer A for 20 minutes at 60°C if any salt precipitation is observed.
Important Note Urine samples stored at -70°C, -20°C or at 4°C will develop some precipitation due to the aggregation of some of the highly abundant proteins in urine. Eliminating these precipitates using centrifugation or filtration may cause the loss of exosomes. Furthermore, these precipitates may affect the quality of the purified nucleic acid. We recommend the use of Norgen’s Urine Preservative when collecting urine samples, which is designed for the preservation of nucleic acids and proteins in fresh urine samples at ambient temperatures. The components of the Urine Preservative allow samples to be stored for over 2 years at room temperature with no detected degradation of urine DNA, RNA or proteins. Norgen’s Urine Preservative is available as a liquid format in Norgen’s Urine Preservative Single Dose Ampules, as well as in a dried format in Norgen’s Urine Collection and Preservation Tubes.
Norgen’s Total Nucleic Acid Preservation Tubes are designed for ambient preservation and transport of total nucleic acids (DNA and RNA) from samples collected using a swab, including nasal, buccal, saliva, fecal, skin, surfaces, etc. The Total Nucleic Acid Preservation Tubes contain Norgen’s Total Nucleic Acid Preservative in a liquid format. The user simply collects the specimen using a sterile nylon flocked swab (not provided), and then transfers the swab into the Total Nucleic Acid Preservative. The preservative prevents the growth of Gram-negative and Gram-positive bacteria and fungi, and also inactivates viruses allowing the resulting non-infectious samples to be handled and shipped safely. In addition, the Total Nucleic Acid Preservative eliminates the need to immediately process or freeze samples and allows the samples to be shipped to centralized testing facilities at ambient temperatures. The components of the Preservative allow DNA samples to be stored at room temperature for over 4 months and RNA samples to be stored at room temperature for over 2 months. Swab samples collected and preserved using Norgen’s Total Nucleic Acid Preservation Tubes are compatible with most commercially available DNA and RNA isolation methods. Samples stored in the tubes have been used successfully with most of Norgen Biotek’s DNA and RNA isolation kits and reagents, including Norgen’s Total RNA Purification Kit (Cat# 17200) and Norgen’s Saliva DNA Isolation Kit (Cat# RU45400). For purification of total nucleic acids please refer to the supplementary protocol provided with Norgen’s Total RNA Purification Kit (Cat#17200).
The Total Nucleic Acid Preservation Tubes can be stored at room temperature for up 1 year without any reduction in kit performance. The collect before date is indicated on the tube label and the kit box label.