Propargyl-PEG6-NHS ester

Introduction

Usages:
For differentiating enteric bacteria based on urease activity by adding 40% sterile urea solution.

Principle:
Peptone provides the carbon and nitrogen; maintain a balanced osmotic sodium chloride; potassium dihydrogen phosphate is buffers; decomposing bacteria urease urea medium, produce large amounts of ammonia, agar as medium coagulant.

Formulation (per liter):
Peptone 1g
Sodium chloride 5g
Glucose 1g
Ppotassium dihydrogen phosphate 2g
Phenol red 0.012g
Agar 12g
Final pH7.2 ± 0.2

How to use:
1.Suspend 21g in 1L of distilled or deionized water. Heat with frequent agitation and boil to completely dissolve the powder. Distribute into flasks. Autoclave at 121 for 15 minutes. cooling to 50-55 and adding 40% urea solution.
2.Diluted and treated samples.

Storage: Store in a dark, cool and dry place, tighten the cap immediately after use. Storage period of three years.

500g

Description 

The DM1160 FluoroBand™ 50 bp Fluorescent DNA Ladder is a ready-to-use DNA ladder, which is pre-mixed with high sensitivity DNA binding fluorescent dye and loading dye for direct gel loading. The DNA Ladder DM1160 is composed of 17 individual DNA fragments: 1.5k, 1.2k, 1k, 900, 800, 700, 600, 500, 450, 400, 350, 300, 250, 200, 150, 100, and 50 bp derived from a mixture of PCR products and specifically digested plasmid DNA; these bands can be visualized when illuminated with 470 nm blue light or a UV light. This product contains two enhanced bands (500 bp and 200 bp) for easier reference. In addition, the low range Orange G tracking dye which mimics the migration of a 50 bp dsDNA during electrophoresis is also added for real time monitoring. Real time observation of the electrophoresis is also possible if compatible light source is fitted to the electrophoresis tank. 

Features

• Sharp bands
• Quick reference— enhanced bands 
• Ready-to-use— premixed with loading dye for direct loading
• Stable— room temperature storage over 6 months
• Directly observed by UV or blue light— premixed with high sensitive DNA fluorescent dye

Source 

Phenol extracted PCR products and dsDNA digested with specific restriction enzymes, equilibrated in 10 mM Tris-HCl (pH 8.0) and 10 mM EDTA.

Range 

50 ~ 1,500 bp 

Concentration 

54 µg/ 500 µl 

Recommended loading volume 

5 µl/ well

Storage

Protected from light 
Room temperature for 6 months
4°C for 12 months 
-20°C for 24 months 

The DM1160 FluoroBand™ 50 bp Fluorescent DNA Ladder is a ready-to-use DNA ladder, which is pre-mixed with high sensitivity DNA binding fluorescent dye and loading dye for direct gel loading. The DNA Ladder DM1160 is composed of 17 individual DNA fragments: 1.5k, 1.2k, 1k, 900, 800, 700, 600, 500, 450, 400, 350, 300, 250, 200, 150, 100, and 50 bp derived from a mixture of PCR products and specifically digested plasmid DNA; these bands can be visualized when illuminated with 470 nm blue light or a UV light. This product contains two enhanced bands (500 bp and 200 bp) for easier reference. In addition, the low range Orange G tracking dye which mimics the migration of a 50 bp dsDNA during electrophoresis is also added for real time monitoring. Real time observation of the electrophoresis is also possible if compatible light source is fitted to the electrophoresis tank.

Introduction

Usages:

For cultivation of non-fastidious microorganisms, indole testing. 

Principle:

Peptone provide carbon and nitrogen sources, vitamins and growth factors; sodium chloride to maintain osmotic equilibrium.

Formulation(per liter):

Peptone 10g

Sodium chloride 5g

Final pH 7.0 ± 0.2

How to use:

1.Suspend 15g in 1 L of distilled water , stirring heated to boiling until completely dissolved, dispensing flask, 121 autoclave for 15min.

2.Diluted and treated samples.

Quality control:

Item	The name and number of strain	Growth	Colony Color
1	Escherichia coli ATCC25922	Good	Turn Red
2	Klebsiella pneumoniae	Good	Color unchange

500g