12x15ml Angle Rotor 

Introduction

Usages:

For the rapid detection and enumeration of coliform bacteria.

Principle:

Peptone and yeast extract powder provides carbon and nitrogen sources and trace elements; sodium chloride maintains osmotic equilibrium; agar as medium coagulant; dodecyl sulfate inhibit Gram-positive bacteria; chromogenic substrate and large intestine flora β- galactosidase-glucosidase specific reaction, hydrolysis of the substrate, the release of the color groups  produce green colonies on the light yellow plate.

Formulation (per liter):

Peptone :10g

Yeast extract powder: 3g

sodium chloride:5g

sodium lauryl sulfate:0.1g

Agar :12g

Chromogenic substrate 2.7g

Final pH 7.0 ± 0.2

How to use:

1. Weigh 32.8g of this product, adding 1L of distilled or deionized water , heated to boiling stirring until completely dissolved, dispensing into flask without autoclaving.

2,Take 25g or 25mL of sample with aseptic procedures, added to the flask containing 225mL of sterile phosphate buffered saline (or saline) is shaken thoroughly homogenized with a homogenizer or a 1:10 dilution 1min, then 1:10 dilution continue to select the appropriate serial dilutions of three, two plates each dilution was inoculated.

3, the use of pour method: The medium is cooled in a water bath to about 50 , sterilized petri dish having a diameter 90mm, 1ml samples were inoculated per dish, then poured into about 15ml of the above dissolution medium, and mix to solidify, upside down, 37 for 24 hours.

4, using surface inoculation: cooled to about 50 , shake devoted to the medium in sterile petri dish. Can be stored in the refrigerator for a day or stored at room temperature for several days (dark, 4 ). The sample was streaked method or filter method, 37 for 24 hours.

5, observe the results.

Quality control:

This product appear light yellow after pouring into plate, these strains were inoculated after 36 ± 1 18 ~ 24h culture growth in the following table.

Growth of bacteria were cultured bacteria numbers feature

Escherichia coli ATCC25922 good green colonies

Citrobacter ATCC8090 good green colonies

Salmonella typhimurium CMCC50115 good colorless colonies

Enterococcus faecalis ATCC29212 suppressed —–

Storage: Store at 10-30 , dark, cool and dry place, tighten the cap immediately after use. Storage period of two years.

1000mL

Bis-propargyl-PEG7 is a homobifunctional reagent with two propargyl groups that can be used to form triazole linkages with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry. The hydrophilic PEG units help improve the solubility of the molecule in aqueous environment. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Bis-propargyl-PEG7 is a homobifunctional reagent with two propargyl groups that can be used to form triazole linkages with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry. The hydrophilic PEG units help improve the solubility of the molecule in aqueous environment. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

 Features 

1.Brushless frequency motor, in great torque, free maintenance, no powder pollution, quick in speed up and down.  

2.Imported compressors fluorine free,double cycle cooling, cold and hot alternating easily, free environment pollution and precise in temperature control.

3.Microprocessor control, digital display which indicates the temperature, speed, time, RCF in operation, speed raising and reducing quickly, operate simply. Running parameter can be edited.

4. 10 kinds of program stored in the memory, 10 kinds of accelerating and decelerating speed for your choice.

5. Automatically electric lid lock, over speed, over temperature protection and imbalance protection.

6.High quality steel centrifuge body , stainless steel chamber, built-in stainless steel explosion-proof protect sleeve , 3 tiers protection,safe and reliable.

7. Rotor is connected to spindle by specialized spring taper sleeve, loading simple and quick, no direction

8. With pre-cooling and get the ideal centrifugation result.

 TGL16 Technical Parameter：

 Matched Rotor for TGL16