Total Nucleic Acid Preservation Tubes

Introduction

Usages:

For pre-enrichment of Salmonella spp.

Principle:

Peptone provide carbon and nitrogen sources to meet the needs of bacterial growth; sodium chloride maintains osmotic equilibrium; potassium dihydrogen phosphate and disodium hydrogen phosphate as buffer.

Formulation(per liter):
Peptone: 10g
Sodium chloride:5g
Disodium hydrogen phosphate:3.5g
Potassium dihydrogen phosphate: 1.5g
Final pH7.2 ± 0.2

How to use:
1. Suspend 20g of product, adding 1L of distilled or deionized water, heated to boiling stirring until completely dissolved, dispensing into flask, autoclave at 121 ℃ for 15min, set aside.
2.Diluted and treated samples.

Quality control：
          　　

Item	The name and number of strain	Growth	Colony Color
1	Salmonella typhi CMCC (B) 50071	good	Cloudy broth
2	Salmonella typhimurium CMCC (B) 50115	good	Cloudy broth
3	Paratyphoid Salmonella CMCC (B) 50093	good	Cloudy broth

Storage: Keep container tightly closed, store in a cool, dry place, away from bright light. Storage period of 3 years.

Specifications: 250g/bottle; 225ml*10bag/box

Reference:
1.GB/T4789.4-2003 People’s Republic of China national standards of food hygiene Examination of Salmonella microorganisms
2.GB/T4789.28-2003 People’s Republic of China national standards of food hygiene microbiological examination Staining, media and reagents
3.SN0170-92 People’s Republic of China Import and Export Commodity Inspection industry standard Salmonella food for export (including Arizona bacteria) test method
4.GB/T4789.4-2008 People’s Republic of China national standards of food hygiene Examination of Salmonella microorganisms
5.GB 4789.4-2010 national standards for food safety standards of food hygiene inspection and microbiological testing of salmonella People’s Republic of China
6.GB 13091-91 People’s Republic of China National Standard Test Method for Salmonella in feed
7.GB 4789.40-2010 national standards for food safety standards of food hygiene inspection microorganism People’s Republic of China E.sakazakii test
8. ISO 6579-2002 Microbiology of food and animal feeding stuffs —– Horizontal method for the detection of Salmonella spp.
9. ISO22964-2006 Milk and milk products —– Detection of Enterobacter sakazakii
10. ISO6785-2001 Milk and milk products —– Detection of Salmonella spp

Overview

• Eight discrete bands, ranging from 100 to 1,000 bases
• Higher intensity band at 500 bases for easy reference
• No need for staining or destaining as loading dye contains ethidium bromide
• Convenient lyophilized format provides better product stability

The Norgen 100 b RNA Ladder is a set of RNA transcripts derived from recombinant DNA templates. This ladder is suitable for precise sizing of small RNA molecules using native or denaturing agarose gels, and can be easily visualized under UV.

Contents

• 2 vials of lyophilized RNA ladder (25 loads each)
• 1x loading buffer: 33.3% formamide, 11.7% formaldehyde, 0.012% bromophenol blue, 0.05mM EDTA, 0.012% ethidium bromide, and 0.7x MOPS solution
• 2x loading buffer

Details

Supporting Data

Figure 1 / 1

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Specifications:

• Eight discrete bands, ranging from 100 to 1,000 bases
• Higher intensity band at 500 bases for easy reference

Contents:

• 2 vials of lyophilized RNA ladder (25 loads each)
• 1x loading buffer: 33.3% formamide, 11.7% formaldehyde, 0.012% bromophenol blue, 0.05mM EDTA, 0.012% ethidium bromide, and 0.7x MOPS solution
• 2x loading buffer

Instructions:

To reconstitute the lyophilized RNA ladder, add 250 µL of 1x loading buffer to each 25 loads vial and vortex gently.
Heat at 80°C for 10 minutes. Incubate on ice for 1 min. Load 10 µL on a 1.5-2% gel. For optimal results, use Norgen 2x loading buffer with each RNA sample. There is no need for staining and destaining denaturing gels since Norgen’s loading buffer contains ethidium bromide.

Storage:

Store at -20°C.