EMB Agar

Details:

Product name：Eosin-Methylene Blue Agar

Product usage: Weakly selective medium for the isolation of intestinal pathogens, especially E. coli (GB, SN standards).

Test principle: As a basic nutrient, peptone provides nitrogen source and other nutrient elements required for bacterial growth; Lactose as a fermentable carbon source; Eosin and methylene blue act as both inhibitors and indicators, producing precipitates under acidic conditions, forming colonies with black centers with metallic luster or dull luster. Eosin is an acidic dye and methylene blue is an alkaline dye. When the bacteria decompose lactose to produce acid, the bacteria are positively charged and can be combined with negatively charged acidic dyes to stain the color of eosin. If the bacteria produce more alkaline substances, the negative charge and the positive charge of the alkaline dye methylene blue combined to make the colony blue. When the amount of acid produced by bacteria is large, the dye can crystallize to form metallic luster. Dipotassium hydrogen phosphate maintaining buffer system; AGAR as a coagulant.

Usage: Weigh 37.5 g of this product, add distilled water 1000 mL, stirring heating and boiling until completely dissolved, 121 ℃ autoclave sterilization for 15 minutes, to be cooled to about 50 ℃, in a sterile environment, pour sterilized flatware, to be solidified, standby.

Nanjing Duly Biotech Co.,Ltd 

has been established for 11 years. It  is mainly engaded in biological and chemical reagents,including enzyme reagents, proteins, nucleic acids, pigments, amino acids, vitamins,carbohydrates, buffers, surfactants,culture media and Separation of materials and kits.There are more than 10,000 products in total.

Our company’s aim is to provide customers with the best quality products and the most intimate service.Personnel has been trained; every batch of material is checked; each procedure guarantees the quality; every bag of our products is top grade;service is thoughtful all the time.The quality, colors and forms of our products have reached a high level in related chemical industry, which relies on characteristic and advanced processing technology and it has gained a high and reliable reputation from customers at both quality and services.

FAQ

Q1: Are you a manufacturer?

Answer: Yes, we are factory founded on 2009.

Q2:How to contact with us?

Answer: Search our company name as Nanjing Duly Biotech Co., Ltd. Please contact sales for specific information.

Q3:Can you give me a discount price?

Answer:Surely,It depend on your qty.

Q4: How can i get a sample?

Answer:Free sample is available,but freight charges will be at your account and the charges will be return to you dudect from your order in future.

Q5:What are the main categories of products sold by the company?

Answer: It  is mainly engaded in biological and chemical reagents,including enzyme reagents, proteins, antibiotics, plant hormones, nucleic acids, pigments, amino acids, vitamins, carbohydrates, buffers, surfactants, culture media and Separation of materials and kits.

Q6:Is the company mainly engaged in small packaging or large packaging?

Answer: Mainly do small packaging reagents, large packaging also do, specific can ask customer service personnel.