DBCO-C5-NHS ester is an amine-reactive compound, which can be used to modify an amine-containing molecule in organic media. This reagent isn’t soluble in aqueous media. The extended 5-carbon atom spacer arm improves solubility in commonly used organic solvents including dichloromethane, chloroform, THF, and ethyl acetate, and it also improves derivatization efficiency and stability of conjugates. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research use only.
Detail
DBCO-C5-NHS ester is an amine-reactive compound, which can be used to modify an amine-containing molecule in organic media. This reagent isn’t soluble in aqueous media. The extended 5-carbon atom spacer arm improves solubility in commonly used organic solvents including dichloromethane, chloroform, THF, and ethyl acetate, and it also improves derivatization efficiency and stability of conjugates. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research use only.
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HCM066 PALCAM Agar Base
Product Info
Document
Product Info
Introduction
Intended Use
For the selective isolation and culture of Listeria monocytogenes.
Principle and Interpretation
Peptone provides the carbon and nitrogen sources necessary for growth; yeast extract powder and starch provide carbon and nitrogen sources, vitamins and growth factors; sodium chloride can maintain a balanced osmotic pressure; glucose provides a carbon source; Listeria hydrolyzes esculin and reacts with iron ions to form black 6,7-dihydroxycoumarin; mannitol is a fermentable sugar, and phenol red is a pH indicator; lithium chloride and other antibiotics can inhibit Gram-negative bacteria and most Gram-positive bacteria; agar is the coagulant of the culture medium.
Formulation
Ingredients
/liter
Peptone
23 g
Starch
1 g
NaCl
5 g
Columbia agar
13 g
Mannitol
10 g
Ferric ammonium citrate
0.5 g
Esculin (aesculin)
0.8 g
Dextrose (glucose)
0.5 g
Lithium chloride
15.0 g
Phenol red
0.08 g
pH7.2±0.2 at 25°C
Preparation
Weigh 68.9g of dry powder of this product, add 1L of distilled water or deionized water, stir, heat and boil until completely dissolved, divide into Erlenmeyer bottles, sterilize at 121℃ for 15min, cool to room temperature and set aside. Heat to dissolve agar before use, cool to 50℃, add 1 tube of supporting reagent (SR0140) per 100mL of basal culture medium, shake well and pour into sterilized culture dish.
Quality Control
The following quality control strains were inoculated and cultured at 35-37℃ for 24h. The results are as follows:
Quality control strains
Growth
Listeria monocytogenes ATCC19115
Gray-green colonies with a black depression in the center and black surrounding
Enterococcus faecalis ATCC29212
–
Escherichia coli ATCC25922
–
Storage and Shelf Life
2-30℃，Keep container tightly closed, avoid direct sunlight.
Use before expiry date on the label.
Precautions
1. When weighing the dehydrated medium, please wear masks to avoid causing respiratory system discomfort
2. Keep container tightly closed after using to prevent clumping.
Waste Disposal
Microbiological contamination was disposed by autoclaving at 121°C for 30 minutes.
Document
Intended Use For the selective isolation and culture of Listeria monocytogenes. Principle and Interpretation Peptone provides the carbon and nitrogen sources necessary for growth; yeast ex……
Silicone oil thermal conductive shelf, high-precision processing method of upper and lower clamping, shelf temperature uniformity can reach ±0.5°c
Integrated cavity:
Integrated chamber, the shelf and cold trap are located in the same chamber, the steam conduction is faster and the freeze-drying effect is better
Refrigerating and heating control system:
Using thermally conductive silicone oil with a high temperature range and precise PID control algorithm, the control accuracy can reach ±0.5°C. Sample shelf temperature range: -70°C~ +80°C
Freeze-drying endpoint testing system:
The pressure comparison method is used to determine the freeze-drying end point. The freeze-drying end point test can be automatically performed after the analytical drying stage to ensure that the moisture content of the material reaches the standard requirements.
Vacuum precise control and adjustment system:
The sublimation and analytical drying processes are controlled and adjusted with high precision to make the freeze-drying process warmer and the sample sublimation more reliable.
Pulse backfill system:
Three backfilling modes can be selected: slow, medium and fast, which avoids the problem of effective substances being blown away and lost due to the aeration of granular and flocculent materials after freeze-drying.
Manual automatic mode selection:
Manual mode is used to explore process parameters (strong human intervention), automatic mode is used in the mature stage of the process, one-click operation, simple and convenient
Data recording and analysis system:
Through the PC host computer, all operating parameters and background parameters of the equipment can be recorded in real time, and all parameter action changes and action changes of operating components can be recorded.
Freeze-drying process recipe storage function:
The host can store 60 sets of fixed or user-defined freeze-drying process recipes, and the PC can store >10,000 programs (depending on the computer hard drive)
Eutectic point test function:
The eutectic point temperature of the product can be tested offline and online, and the spectrum can be analyzed manually or automatically (optional)
Remote control system:
The operating status of the device can be monitored remotely, and the device can be monitored in real time via WiFi or the cloud.
Mobile phone monitoring system:
You can monitor the operating status of the equipment with your mobile phone, which is simple and convenient (optional)
Cold trap defrost system:
The hot air defrosting method has high safety performance; the defrosting speed is fast, which solves the inconvenience caused by traditional immersion defrosting.
5. There are 4 kinds of rotors for your choice.
