Flow Chart Of Acidity / Alkalinity Test By Ph Meter Page 3
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4Page No.
FC-PF-274
3/4
PESTICIDE FORMULATION & RESIDUE ANALYTICAL CENTRE, PMD, NIPHM, HYDERABAD
IF SAMPLE IS ALKALINE
Where,
Where,
In case blank is Alkaline
V= Volume of HCl consumed by the sample
(iv) Alkalinity (as NaOH) % by mass =
B= Volume of HCl consumed by blank.
N
= Normality of HCl solution.
1
4.0 (V – B) x N
M = Mass in ‘g’ of the sample taken for test
1
----------------------
M
In case blank is acidic
V = Volume of HCl required for the test sample
Alkalinity (as NaOH) % by mass =
v = Volume of NaOH required for blank titration
N
= Normality of standard HCl solution
1
4.0 (VN
+ vN
)
N
= Normality of standard NaOH solution
1
2
2
----------------------
M = Mass in ‘g’ of the sample taken for test
M
Sr. No.
Name of test
Result
Unit
Method of Analysis
1.
Active ingredient
%
CIBRC approved method
2.
Acidity (or)
%
IS – 6940 : 1982
Alkalinity
%
IS – 6940 : 1982
Remark / Reference :
Analyzed by
Name
Dated signature
Checked by
Name
Name of the Laboratory :
Pesticide Formulation & Residue Analytical Centre, PMD, NIPHM, Hyderabad
Flow chart for acidity or
Document No.
:
FC-PF-272
Document Name
:
alkalinity by pH meter
Revision No.
:
00
Issue Date
:
01/05/2014
Revision Date
:
--
Next Revision Date
:
01/05/2016
Prepared By
Checked By
Issued By
Approved by
Dr. Rahmath
Dr. Nirmali Saikia
Mr. C.V. Rao
Dr. Abhay Ekbote
(Deputy Technical Manager)
(Technical Manager)
(Quality Manager)
(Director PM)
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