AGAR AGAR POWDER Bacteriological Grade

Product Code: JL--2613

Agar agar powder is used clinical, bacterial and yeast transformation studies and molecular biology studies, bacteriological agar is generally used 1 - 2% for microbiological culture media preparations 0.5% for motility and anaerobes and microaerophiles require 0.1% maximum. Agar agar is a gel at room temperature, remaining firm at temperature as high as 65°C. Agar melts at approximately 85 - 88°C, a different temperature from that at which it solidifies, 32 - 40°C. This property is known as hysteresis. Agar agar powder is generally resistant to shear forces; however, different agars may have different gel strengths or degrees of stiffness.

 

 

AGAR AGAR PHYSICAL PARAMETERS

S.L. No.

PRODUCT PARAMETERS

SPECIFICATION

1.

Appearance

Off white to creamish colour free flowing powder

2.

Solubility (2% soln. at 90ºC)

Soluble in hot water, near to clear

3.

Clarity (1% soln. at 121ºC)*

Near to clear jelly, No ppt.

* -After Autoclave 

AGAR AGAR CHEMICAL PARAMETERS

S.L. No.

PRODUCT PARAMETERS

SPECIFICATION

1.

pH  (2% soln. at 25ºC)

6.0 - 7.0

2.

Loss on drying (at 105ºC)

NMT-18.0%

3.

Acid Insoluble Ash

NMT-0.5%

4.

Gelling Temp.

38-40ºC

5.

Melting Temp.

85-88ºC

6.

Total Ash

NMT- 5.0%

7.

Gel Strength (1.5% Gel)

NLT- 700 gm/cm2

8.

Heavy Metals (Pb)

NMT- 20ppm

 

AGAR AGAR MICROBIAL PARAMETERS

S.L. No.

PRODUCT PARAMETERS

SPECIFICATION

1.

Total viable count

NMT- 10,000cfu/gm

2.

Escherichia coli

Negative

3.

Salmonella spp.

Negative

4.

Staphylococcus aureus

Negative

5.

Yeast & molds

100/gm

Std Packing   : 25.0 Kg, HDPE Drum

Best Before   : 36 Months

Storage         : Hygroscopic in nature, store below 25ºC and protect direct sunlight.