Permagen’s 12 x 1.5 mL Microfuge Tube Magnetic rack is designed for magnetic bead separations from up to 12 tubes
Detail
Permagen’s 12 x 1.5 mL Microfuge Tube Magnetic rack is designed for magnetic bead separations from up to 12 tubes
Accommodates many common 1.5 mL Microcentrifuge and some 2.0 mL tubes
Tubes are angled and beads will be pulled to back wall allowing easy aspiration and tip tracking down the front wall of the tubes without disturbing bead pellet
Short term stability: 2-8oC, Long term stability: See individual component labels
Stability:
> 2 years under recommended storage conditions
Analyte:
Ascorbic Acid
Assay Format:
Spectrophotometer, Microplate, Auto-analyser
Detection Method:
Absorbance
Wavelength (nm):
578
Signal Response:
Increase
Linear Range:
0.5 to 30 µg of L-ascorbic acid per assay
Limit of Detection:
0.175 mg/L
Reaction Time (min):
~ 8 min
Application examples:
Wine, beer, fruit juices, soft drinks, jam, milk, dairy products (e.g. cheese), dietetic foods, baby foods, processed meat, baking additives, fruit and vegetables (e.g. tomato and potato), pharmaceuticals, feed and other materials (e.g. biological cultures, samples, etc.).
Method recognition:
Methods based on this principle have been accepted by MEBAK
The Ascorbic Acid (L-Ascorbate) assay kit is for the specific measurement and analysis of L-ascorbic acid in beverages, meat, flour, dairy and vegetable products.
Note for Content: The number of manual tests per kit can be doubled if all volumes are halved. This can be readily accommodated using the MegaQuantTM Wave Spectrophotometer (D-MQWAVE).
All reagents stable for > 6 months after preparation
Mega-Calc™ software tool is available from our website for hassle-free raw data processing
Standard included
Suitable for manual, microplate and auto-analyser formats
Document
The Ascorbic Acid (L-Ascorbate) assay kit is for the specific measurement and analysis of L-ascorbic acid in beverages, meat, flour, dairy and vegetable products.
Cat.# 20105S, 20105L: Size range 300-450 bp (ideal for NGS library size selection)
Product Info
Document
Product Info
The series of DNA Size Selection Kits (Magnetic Beads) were developed for DNA size selection using magnetic beads. A total of 11 kits are available, with different selection ranges spanning from 50 bp to over 10 kb. The kits provide a simple and quick approach for the enrichment of a specific range of DNA fragments. The kit workflow allows double-sided or single-sided size selection for specific size cutoffs.
Gel images of different ranges of size selection. Sheared human genomic DNA was used as input.
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DNA size selection is a selective capture of DNA fragments of a specific range of size for next-generation sequencing (NGS) library preparations, PCR, ChIP assay, DNA ligations, endonuclease digestions, adapter removal, and other genomics and molecular biology applications. DNA size selection is preferred after NGS library prep in most of the cases. The NGS library preparation is related to the quality of the sequencing data. Precise NGS library size selection can increase sequencing efficiency, improve data quality, and reduce costs.
There are two types of sequencing technologies: short-read sequencing and long-read sequencing. Short-read sequencing uses DNA libraries that contain small insert DNA fragments of similar sizes, usually several hundred base pairs. The sequencing efficiency can be improved if the DNA size selection is in the right range. Cat.# 20104S and 20104L are the best kits for NGS library size selection of illumina paired-end 100 (PE100) sequencing with 100-200 bp library inserts; Cat.# 20105S and 20105L are the best kits for NGS library size selection of illumina paired-end 150 (PE150) sequencing with 150-300 bp library inserts; and Cat.# 20106S and 20106L are the best kits for NGS library size selection of illumina paired-end 300 (PE300) sequencing with 300-600 bp library inserts.
Long-read sequencing uses a large DNA fragment as input and makes very long reads. Usually, library size selection is preferred to remove smaller fragments. Cat.# 20110S and 20110L are the best kits for long-read sequencing size selection with DNA sizes >5 kb, and Cat.# 20111S and 20111L are the best kits for long-read sequencing size selection with DNA sizes >10 kb.
The magnetic beads technology uses paramagnetic particles, also known as SPRI (Solid Phase Reversible Immobilization) beads, to bind DNA reversibly and selectively. DNA fragments can be size-selected and purified by changing the properties of the magnetic beads or SPRI beads. The magnetic beads can easily separate the beads-binding DNA from the contaminants and unwanted components in the samples. The samples after DNA size selection are free of contaminants such as buffer components, enzymes, proteins, salts, dNTPs, primers, and adapters. Our proprietary magnetic beads reagents improve yield, selectivity, and reproducibility.
Specific DNA fragments at a certain length range can be purified simply using magnetic separation with different beads components, avoiding tedious and time-consuming gel extraction and column-based purification. The magnetic beads method is popular for common DNA size selection, including library size selection. The first beads-binding step, referred to as the right-side clean-up, removes large DNA fragments. The large DNA fragments are bound to the beads and are discarded. The desired DNA fragments in the supernatant are transferred to a new well, and new beads are added to the supernatant for the second beads-binding, referred to as the left-side clean-up. The double-size selected DNA fragments are eluted after ethanol rinsing.
DNA size selection with dual clean-ups.
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A single clean-up is needed for DNA size selection with large fragments. In this case, only the large DNA fragments are bound to the beads. The selected larger DNA fragments are eluted after ethanol rinsing.
DNA size selection with single clean-up for >5 kb and >10 kb DNA.
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Features of DNA size selection and library size selection
High specificity and high recovery of size selection
11 selection ranges are available, including 5 ranges for NGS library size selection
50-100 bp
100-200 bp
200-500 bp
250-350 bp: ideal for illumina PE100 sequencing
300-450 bp: ideal for illumina PE150 sequencing
450-750 bp: ideal for illumina PE300 sequencing
500-1000 bp
1-3 kb
1-5 kb
>5 kb: ideal for long-read sequencing
>10 kb: ideal for long-read sequencing
Fast and simple
20-min protocol
No gel purification required
No columns required
No centrifugation required
Efficient removal of contaminants and unwanted components
Suitable for self-collection of saliva samples supervised by a trained individual in the collection procedure by watching the training video and reading over the collection instructions.
Norgen’s Saliva RNA Collection and Preservation Devices Dx are designed for 1) safe and non-invasive supervised self-collection of saliva specimens and 2) preservation of RNA in saliva specimens at ambient temperature. Each of the 50 Saliva RNA Collection and Preservation Devices Dx consists of 3 components: (1) Saliva Collection Funnel and Collection Tube, (2) Collection Tube Cap, and (3) Norgen’s Saliva RNA Preservative contained within a sealed squeezable ampoule. Saliva collection is performed through supervised self-collection. Saliva samples are collected by spitting inside the Collection Funnel which has been assembled with the Collection Tube. After collecting the required volume of saliva the Collection Funnel is removed and the contents of the Preservative Ampoule are then added and mixed with the collected saliva. The Saliva Collection Tube is subsequently sent to the laboratory for RNA isolation and analysis. RNA can be isolated from the preserved saliva samples using Norgen’s Saliva/Swab RNA Purification Kits Dx (Cat# Dx69100, Dx69300). Each of Norgen’s Collection Tubes is labeled with a unique serial number that can be used for secure and anonymous tracking of the sample. The saliva RNA in preserved samples is stable for up to 2 months at room temperature. This kit is ideal for collecting and preserving RNA samples for in vitro diagnostic use for medical purposes. This kit can be used to collect and preserve viral RNA, including SARs-CoV-2 RNA for detection of COVID-19.
Norgen’s Saliva RNA Collection and Preservation Devices Dx do not provide a diagnostic result. It is the sole responsibility of the user to use and validate these devices in conjunction with a downstream in vitro diagnostic assay.
Saliva RNA Preservative
Norgen’s Saliva RNA Preservative is an aqueous storage buffer designed for rapid cellular lysis and subsequent preservation of RNA from fresh saliva specimens. The buffer eliminates the need to immediately process or freeze samples and allows the samples to be shipped to centralized testing facilities at ambient temperature. The components of the buffer allow samples to be stored for up to 2 months at room temperature. The Saliva RNA Preservative also inactivates all bacteria, yeast and viruses present in the saliva sample.
Nucleic Acid Isolation from Preservative
Saliva RNA can be isolated from the preserved saliva samples using Norgen’s Saliva/Swab RNA Purification Kits Dx (Cat# Dx69100, Dx69300). To minimize irregularities in diagnostic results, suitable controls for downstream applications should be used.
The Collection Device should be kept tightly sealed and stored at room temperature for up to 2 years without any reduction in kit performance (The collection due date is written on the device label).
Once collected, saliva RNA is stable for up to 2 months when kept tightly sealed and stored at room temperature.
The Collection Tube, the Collection Funnel and the Device Container of each individual Saliva RNA Collection and Preservation Device are recyclable.
Kit Components
Cat. RU53800 (50 Devices)
Individual Saliva RNA Collection and Preservation Devices
50
Donor Procedure Flowchart
1
Product Insert
1
Individual Saliva RNA Collection and Preservation Device Dx Contents
