Calcium Carbonate Granular CS 90 grade

Sl. No.

Test Parameters

Acceptance Criteria

Test Result

Method Reference

1.       

Appearance

White to off-white fine granules.

In house

2.       

Identification

A.     It produces effervescence.

B.     Responds to the tests for Calcium.

C.     Maltodextrin: A red precipitate is formed.

A.   USP

B.   USP

C.   In house

3.       

Loss on drying

(at 105°C for 3 hrs)

Not more than 2.0%.

1.3%

In house

4.       

Bulk density

Between 0.60 g/cc and 0.80 g/cc.

0.67

In house

5.       

Sieve test

i)      35 mesh: 95.0% pass through minimum.

ii)     200 mesh: 90.0% retained minimum.

 Conforms

i)    In house

ii)   In house

6.       

Assay (Dried basis)

Not less than 88.0% and not more than 93.0% of Calcium Carbonate.

 91%

USP

7.       

Microbial limit tests

i)    Total aerobic microbial count: Not more than 1000 cfu/g.

ii)   Total combined molds and yeasts count: Not more than 100 cfu/g.

iii)  Escherichia coli: Absent/g.

iv)  Salmonella species: Absent /10 g

Conforms

i)     In house

ii)    In house

iii)  In house

iv)   In house