Vitamin B12, also called cobalamin, is a water-soluble vitamin that is involved in the metabolism of every cell of the human body: it is a cofactor in DNA synthesis, and in both fatty acid and amino acid metabolism. It is particularly important in the normal functioning of the nervous system via its role in the synthesis of myelin, and in the maturation of developing red blood cells in the bone marrow.
This kit is a product based on indirect-competitive ELISA, which is fast, easy, accurate and sensitive compared with common instrumental analysis.
Detection limit of Vitamin B12 acid in liquid samples
Other Products
Plasma/Serum Exosome Purification and RNA Isolation Kits
Product Info
Document
Product Info
Overview
Purification and enrichment of intact plasma/serum exosomes for functional studies
Isolate all sizes of RNA, including microRNA, irrespective of size or GC content, without bias
Versatile plasma/serum input volume
No phenol extractions, Proteinase K treatment, nor carrier RNA required
No time-consuming ultracentrifugation, filtration nor special syringes required
No precipitation reagents, nor overnight incubation required
Compatible with plasma/serum from most species
Pure exosomes are purified and are free from any other RNA-binding proteins
Purification is based on spin column chromatography that uses Norgen’s proprietary resin
The purified RNA is suitable for a variety of downstream applications, including Small RNA Sequencing. Find out more information on Norgen’s NGS services
Norgen’s Plasma/Serum Exosome and RNA Isolation Kits constitute all-in-one systems for the purification of exosomes and the sequential isolation of exosomal RNA from different plasma/serum 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 in that they do not require any special instrumentation, protein precipitation reagents, extension tubes, phenol/chloroform or protease treatments. The RNA isolated from the purified exosomes is free from any protein-bound circulating RNA and is of the highest integrity. 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.
Norgen’s Plasma/Serum Exosome and RNA Isolation Mini Kit
For sample volumes ranging from 50 µL to 1 mL. This kit allows the user to elute into a flexible elution volume ranging from 50 µL to 100 µL.
Norgen’s Plasma/Serum Exosome and RNA Isolation Midi Kit
For sample volumes ranging from 1 mL to 4 mL. This kit allows the user to elute into a flexible elution volume ranging from 50 µL to 100 µL.
Norgen’s Plasma/Serum Exosome and RNA Isolation Maxi Kit
For sample volumes ranging from 4 mL to 10 mL. This kit allows the user to elute into a flexible elution volume ranging from 50 µL to 100 µL.
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 solutions 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 This kit is suitable for the purification of exosomes from fresh or frozen serum or plasma prepared from blood collected on either EDTA or Citrate. Plasma samples prepared from blood collected on heparin should not be used as heparin can significantly interfere with many downstream applications such as RT-PCR.
The 16S V3-V4 Library Preparation Kit for Illumina consists of the reagents and components required for library preparation of the 16S V3-V4 amplicon libraries to be used for next-generation sequencing on Illumina platforms. All molecular reagents including primers, enzyme mixes, indexes, and buffers are provided. Instructions for PCR clean up with the AMPure XP Magnetic Beads (supplied by customer) are also included for rapid purification of nucleic acid products generated at two steps of the workflow. The library prep workflow could be used for purified DNA inputs from different sources including stool, soil, water, saliva, plant, urine, skin swab, vaginal swab, cheek swab, nasal swab, plasma/serum, tongue swab, gum swab, and others.
The 16S V3-V4 Library Preparation Kit for Illumina has a streamlined procedure that reduces the handling time such that the library prep procedure can be completed in approximately 4 hours (see diagram below). Input DNA is first subjected to targeted PCR to amplify the V3-V4 region of the DNA encoding 16S rRNA. The post-PCR reaction is then cleaned up using AMPure XP beads. Dual index primers are then added using a limited-cycle PCR. The indexed amplicons flanked by 5′ and 3′ barcoded adaptors are then cleaned using AMPure XP beads. The libraries are then ready for quantification, pooling and sequencing.
Details
Minimum amount of starting material:
2.5 µL of DNA (5 ng/µL)
Time to complete library preparation:
4 hours
Storage Conditions and Product Stability Norgen’s 16S V3-V4 Library Prep Kit for Illumina is shipped as one kit box (for the 24 prep kit) or two sub-component kits (for the 96 prep kit). All kits should be stored at -20°C upon arrival.
All kit components should remain stable for at least 1 year when stored at the specified storage conditions.
The Kit provides fast purification of high-quality RNA from plants, cell, tissues, and yeast using silica-membrane spin columns with a binding capacity of 100μg RNA. There is no need for phenol/chloroform extractions and time-consuming steps such as CsCl gradient ultracentrifugation or precipitation with isopropanol or LiCl. RNA purified using the RaPure Total RNA Purification System can be used for applications such as RT-PCR, Northern blotting, poly A+ RNA (mRNA) purification, nuclease protection, and in vitro translation.
Details
Specifications
Features
Specifications
Main Functions
Isolation total RNA from <150 mg simple plant sample without chloroform
Applications
RT-PCR, qPCR, Northern hybridization, second generation sequencing, nucleic acid protection, in vitro translation
Purification method
Mini spin column
Purification technology
Silica technology, DNA filtration technology
Process method
Manual (centrifugation or vacuum)
Sample type
Economic crops
Sample amount
≤150 mg
Elution volume
≥30μl
Time per run
≤25 minutes
Liquid carrying volume per column
800µl
Binding yield of column
100µg
Principle
The Kit isolates total RNA from up to 150mg plant tissue. A short workflow enables RNA isolation with genomic DNA removal in less than 25 min. Samples are first lysed and homogenized. The lysate is passed through a DNA Mini column, ethanolis added to the flow-through, and the sample is applied to an RNA column. RNA binds to the membrane and contaminants are washed away. High-quality RNA is eluted in as little as 30µl water using the Kit.
Advantages
Efficient removal of DNA – unique genomic DNA removal column without DNase treatment
High quality – high purity total RNA can be directly used in various sensitive downstream applications
Fast – several samples can be extracted in 25 minutes by column method
Safe – no phenol chloroform extraction required
Sensitive – RNA can be recovered at the level of PG
Broad spectrum – various types of plant samples can be processed by diversity of operating procedures
Kit Contents
Contents
R415102
D415103
Purification Times
50 Preps
250 Preps
HiPure DNA Mini Column II
50
250
HiPure RNA Mini Columns
50
250
2ml Collection Tubes
100
2 x 250
Buffer RLC
50 ml
200 ml
Buffer PRC1
50 ml
200 ml
Buffer RW1
50 ml
200 ml
Buffer RW2*
20 ml
2 x 50 ml
RNase Free Water
10 ml
30 ml
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. Make sure that all buffers are at room temperature when used. During shipment, crystals or precipitation may form inthe Buffer RLC/PRC1. Dissolve by warming buffer to 37°C.
Purchase Guide
1. When dealing with woody or uncommon samples, R4150 is recommended first. R4150 contains two polysaccharide/polyphenol lysis buffer, which is the most universal product.
2. R4151 is recommended for handling common economic crop samples for the first time. Strong lysis solution can be used to process easy-extraction samples. The amount of corn or rice leaves samples can reach up to 300mg.
3. R4165 adopts CTAB/chloroform method, which can also handle a large number of difficult-to-extraction plants, but requires contact with chloroform substitutes, which is less safe than other kits. This kit uses DNase Ⅰ to remove DNA, which is also a good choice for extracting polysaccharide/polyphenol-rich plant samples.
4. R4014 is recommended for fruit/starch plant samples, which uses improved trizol pre-treatment, single column operation and is more economical.
Select the right purification kit to get impactful results：
The Kit provides fast purification of high-quality RNA from plants, cell, tissues, and yeast using silica-membrane spin columns with a binding capacity of 100μg RNA. There is no need for phenol/chloroform extractions and time-consuming steps such as CsCl gradient ultracentrifugation or precipitation with isopropanol or LiCl. RNA purified using the RaPure Total RNA Purification System can be used for applications such as RT-PCR, Northern blotting, poly A+ RNA (mRNA) purification, nuclease protection, and in vitro translation.
