Bacteriological Agar

Your Premier Bacteriological Agar Supplier

What is Bacteriological Agar?

Agar is a natural hydrocolloid extracted from several species of red algae, mainly the Gelidium, Gracilaria, and Pterocladia types.

Agar was first suggested for microbiological purposes in 1881 by Fannie Hesse. By the early 1900s, agar became the gelling agent of choice over gelatin because agar remains firm at growth temperature for many pathogens and agar is generally resistant to a breakdown by bacterial enzymes. The use of bacteriological agar in microbiological media significantly contributed to the advance of microbiology, paving the way to study pure cultures.

Our agar is made from selected gelidium and gracilaria, and used as coagulants in the microbial medium.

 
 
 

Table of Contents

Bacteriological Agar Properties

  • Agar is a gel at room temperature, remaining firm at temperatures as high as 65°C
  • Agar melts at approximately 85 - 91°C, a different temperature from solidification at 34 - 36°C. This property is known as hysteresis.
  • Agar is generally resistant to shear forces;

Advantages

It includes good clarity, controlled gelation temperature, controlled melting temperature, good diffusion characteristics, absence of toxic bacterial inhibitors, and the relative absence of metabolically useful minerals and compounds.

It is recommended for clinical applications, auxotrophic studies, bacterial and yeast transformation studies, and bacterial molecular genetics applications.

Specification

CHEMICAL CHARACTERISTICS

Appearance

Off-white to yellowish powder

Moisture

≤ 12 ﹪

Total Ash

≤ 5 ﹪

Gel-strength (Nikkan Method)

700-1200 g/cm2

pH

4 - 8

Mesh size

80 - 100

Starch & Dextrin

Not detectable

Gelatin and other proteins

Not detectable

Water insoluble matter

≤ 1 ﹪

Acid insoluble matter

≤ 0.5 ﹪

Pb

≤ 5 ppm

As

≤ 2 ppm

Cd

≤ 1 ppm

Hg

≤ 1 ppm

MICROBIOLOGICAL TEST

Total plate count

≤ 5000 cfu/g

Yeast & Mold

≤ 300 cfu/g

E.Coli

Absent in 5 g

Salmonella

Absent in 5 g

 
 
 

Technical Data Sheet

Click the right button to download the full TDS of Agar Agar Powder.

Packaging, Storage and Shelf Life

As a professional and responsible bacteriological agar supplier in China, Gino Biotech provides customized products and flexible packaging solutions. By offering custom packaging, we will help you boost your business and stand out from the competition. 

Carton Box

Carton Box_Gino Biotech_Hydrocolloid Suppliers

Fiber Drum

Fiber Drum_Gino Biotech_Hydrocolloid Suppliers

Tin Box

Square Tin Box_Gino Biotech_Hydrocolloid Suppliers

Kraft Bag

Kraft Paper Bag_Gino Biotech_Hydrocolloid Suppliers

PP Woven Bag

PP Woven Bag_Gino Biotech_Hydrocolloid Suppliers

Store away from heat and moisture, preferably in a cool and dry place. The product, when stored in these conditions and in its original unopened packaging, will maintain its initial properties for 24 months.

Applications

The Bacteriological Cultures_bacteriological agar

It is recommended for clinical applications, auxotrophic studies, bacterial and yeast transformation studies, and bacterial molecular genetics applications.

This product is a gelling agent used in the preparation of culture media for microbial growth and other bacteriological applications, it is used for different microbiological applications, being the basic ingredient in the preparation of plaque diagnostic culture media.

Culture media and other bacteriological applications, Plant tissue culture, Dental mold, Pharmaceutical preparations.

Suggested Use Level | Guidelines for Use

It is used in culture media in the following concentrations:

  • For Routine Media:1.4 % - 1.6 % ,
  • For Soft Media: 0.5 %,
  • For Semi-solid Media: 0.15 %,
  • For Media with Reduced Oxygen Tension: 0.05 % - 0.1 %,
  • For Extra Hard Gels, for inhibiting swarming of Proteus species: 2.5 % - 3.0 %
 

Contact Form

Gino Biotech will always be your best supplier and a good partner for agar agar and other hydrocolloids from China.

Contact Henan Gino Biotechnology Co., Ltd. for Technical Service or questions involving Agar Agar or ask at [email protected]

 
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