Agar Powder

PARAMETERS

STANDARD VALUES

OBSERVED VALUES

PHYSICAL PARAMETERS:

Description

Highly hygroscopic fine spray

dried powder-having tendency to form lumps

Complies

Color(EBC) of 10% Soln

Light brown to brown coloured powder

Complies

Odour

Sweet typical pleasant malt flavor

Complies

Triable Acidity(% w/w as lactic acid)

1.4% Max.

1.22%

Solubility

2 % solution in water is clear

Complies

pH of 2 % solution

4.50 – 7.00 at 27˚C

5.20 at 27˚C

Loss on drying

NMT 10.00 % w/w

4.80% w/w

CHEMICAL PARAMETERS:

Total Protein

NLT 3.00 % w/w as estimated by Kjeldahl’s method

5.20% w/w

MICROBIOLOGICAL PARAMETERS:

Total plate count

NMT 5000 CFU per gram

2970 CFU/gm

Yeast & mould

NMT 500 CFU per gram

95 CFU/gm

E. Coli.

Absent

Complies

S.typhi

Absent

Complies

P. aeruginosa

Absent

Complies

S. aurous

Absent

Complies