Ammonia Assay Kit (Liquid Ready™)

Description

RAA uses a novel RNA substrate tagged with a fluorescent reporter molecule (fluor) on one end and a quencher on the other. In the absence of RNases, the physical proximity of the quencher dampens fluorescence from the fluor to extremely low levels. When RNases are present, however, the RNA substrate is cleaved, and the fluor and quencher are spatially separated in solution. This causes the fluor to emit a bright green signal when excited by light of the appropriate wavelength. Fluorescence can be readily detected with a fluorometer. Since the fluorescence of the RAA Substrate increases over time when RNase activity is present, results monitored with a fluorometer can be evaluated kinetically. The sequence of the RAA Substrate has been carefully optimized to detect several RNases, including RNase A, RNase T1, RNase I, micrococcal nuclease, S1 nuclease, mung bean nuclease, and Benzonase.

RNase activity in a convenient and sensitive fluorimetric assay that delivers results in real time. Great for Quality Testing for RNase contamination of materials and supplies.

Overview

• Protocol optimized for DNA isolated from a diversity of samples including stool, soil, water, saliva, plant, urine, skin, and more
• Simple and quick workflow: library could be prepared in less than 5 hours
• Component of Norgen’s metagenomics workflow
• A single NGS run can be prepared with up to 384 unique dual-index libraries

Sample type purification kit guide 

The 16S V2-V3 Library Preparation Kit for Illumina consists of the reagents and components required for library preparation of the 16S V2-V3 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 V2-V3 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 V2-V3 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

Supporting Data

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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 V2-V3 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.

Step	Component	Cat. 70300 (24 preps)	Cat. 70310, 70320, 70330, 70340 (96 preps)
Amplicon PCR (PCR 1)	MGX Master Mix	330 µL	1,320 µL
	16S V2-V3 Primer Mix	70 µL	280 µL
Index PCR (PCR 2)	Indexing Master Mix	660 µL	2 x 1,320 µL
	N7xx Index Primer	50 µL	50 µL
	S5xx Index Primer	70 µL	70 µL
PCR Clean-Up	Resuspension Buffer	2 x 1,250 µL	2 x 5,000 µL
	Nuclease-free water	1,250 µL	1 x 6,000 µL

Overview

• Detection kits for Salmonella enterica
• CE-IVDD marked in accordance with the European Commission Directive 98/79/EC.
• Research version available
• Available in TaqMan Probe format for analysis

Salmonella enterica have emerged as significant foodborne pathogens that pose a serious public health problem. The symptoms of salmonellosis may include diarrhea, fever, vomiting, and abdominal cramps with elderly, new-born, and immunocompromised individuals the most susceptible. S. enterica is a facultatively anaerobic Gram-negative bacterium that could survive low temperatures and freezing. The majority of the 1.3 billion annual cases of Salmonella-caused human gastroenteritis result from ingestion of contaminated food products, such as raw or undercooked meat, seafood, and eggs, as well as raw or unpasteurized milk and dairy products. Salmonella infections are also contracted following consumption of fresh fruits or vegetables that have been contaminated by infected fertilizer.

Salmonella enterica TaqMan PCR Kit, 24 reactions

• Ready to use format, including Master Mix for the target and PCR control to monitor for PCR inhibition and validate the quality
• Specific Primer and Probe mix for the pathogen/virus/viroid of interest
• Primer and Probe mix
• Positive and negative control to confirm the integrity of the kit reagents

Details

Supporting Data

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Storage Conditions

The Salmonella enterica TaqMan PCR Kit Dx is shipped on dry ice. The components of the kit should be frozen upon arrival. If one or more of the components is not frozen when the kit is received, or if any of the components have been compromised during shipment, please contact Norgen Biotek for assistance. All kit components should be stored at -20°C upon arrival. Repeated thawing and freezing (> 3 x) of the Master Mix and Positive Control should be avoided, as this may affect the performance of the assay. If the reagents are to be used only intermittently, they should be frozen in aliquots.

Component	Cat. TM32100 (24 rxns)
MDx TaqMan 2X PCR Master Mix Dx	550 µL
S. enterica Primer & Probe Mix Dx	2 x 70 µL
S. enterica Positive Control Dx – 200,000 copies/μL	50 µL
Nuclease-Free Water	2 x 1.25 mL
Product Insert	1