SL.NO.

TESTS

SPECIFICATION

RESULTS

01

Characters

A white, crystalline powder, colourless, shiny plates greasy to the touch,or white crystals,  soluble in water  and in alcohol,freely soluble in  boiling  water and in glycerol85 per cent.                               

A white, crystalline powder, colourless, shiny plates greasy to the touch,or white crystals,  soluble in water  and in alcohol,freely soluble

in  boiling  water and in glycerol85 per cent.

02

Identification

AThe flame has a green border

after  ignition of  the  solution.

BSolution S is acid.

AThe flame has a green border after  ignition of  the  solution.

BSolution S is acid.

03

Appearance of

 solution

solution S is clear and colourless

solution S is clear and colourless

04

PH(3.3%Solution)

3.8 to 4.8

4.2

05

Solubility in

 alcohol

The  solution  is  not  more

opalescent  than  reference

suspension ll  and is colourless

The  solution  is not more

opalescent  than  reference

suspension ll  and  is

colourless

06

Organic matter

It does not darken on progressive heating to dull redness.

It does not darken on progressive heating to dull redness.

07

Heavy metals

NMT15ppm

Less than 15ppm 

08

Sulphates

NMT  450ppm 

Less than 450ppm  

09

Assay

Not less than 99.0per cent and not  more  than  the  equivalent of

100.5%  per cent  of  H₃BO_3.

100.1%

10

Microbial Contamination

Bacteria, Yeasts

& Molds

Total count NMT 10 cfu/g

Total count NMT 10 cfu/g

Clostridium sp.

None

None

Enterobacteriaceae

None

None

E.coli

None

None

Salmonella

None

None

P.aeruginosa

None

None

S.aureus

None

None

CONCLUSION CONFORM WITH BP2003