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Certificate of Analysis
BND 5051
STANDARD
ORDINARY PORTLAND CEMENT
(Chemical Parameters)
5051/-5YF
Certificate number: BND

Reference Material
5051), an Indian Certified
This Bharatiya Nirdeshak Dravya (BND Materials (NCB),
been developed by National Council for Cement and Buiiding
(CRM), has evaluating/comparing
various test methods and
India for evaluating proficiency
of analysts,
of Ordinary Portland
minor constituents, for analysis
calibration of equipment for analyzing consists of 4 sealed glass
vials
material of similar matrix. One set of BND 5051
Cement and Portland Cement.
of powdered Ordinary
and each vial contains approximately 5g
of the total material and reported
Each constituent has been analyzed as g/g
Certified Value: constituent, estimated with
certified value and expanded uncertainty of each
in percent. The
below:
known sources of bias, is given
CERTIFIED VALUE
EXPANDED UNCERTAINTY
cONSTITUENT (PERCENTBY WEIGHT) (Coverage Factor k=2)
2.51 #0.07
LOI +0.24
20.81
SiO 4.30 +0.06
Fe-03 4.59 0.08
Al-O 59.94 +0.23
CaO +0.20
4.34
MgO 1.87
+0.03
SO; +0.06
2.23
IR
0.44 +0.03
Na,O +0.03
0.57
K,0 0.10 +0.014
Mn-O +0.01
0.25
TIO +0.004
0.032
CI
to the
constituent is estimated according
of the certified value for a
The expanded uncertainty confidence level. The
in Measurement (GUM) at 95.45%
Guide to the expression of Uncertainty and
measurement variability among
the participating laboratories
uncertainty includes the The
means (ISO 13528:2015).
controlled through statistical
material inhomogeneity, latter and Cl is the best
FeO;, AlHO3. Ca0, Mg0, SO3. IR, Na20, K0
value listed for LOI, SiO2. comparison (ILC) results
of 17
on the inter-laboratory
estimate of the true value based
constituents, it is based on
the results of analytical programme
laboratories, and for minor constituents, alkalis and Cl
has
laboratories. The analysis of major
carried out in three NCB
Estimation of Mn:03 and TiO^
has been done as per IS
1S 4032:1985.
been carried out as per
12423:1988.
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Traceability: The BND 50S| is metrologseally traceable to SI units through Indian national
mcasurement standards at CSlR-National Physical l aboratory (National Mcasurement Institute
of India) All measurements have been carmied out to cstablish traccability through an unbroken
hain of comparisons, having stated uncertainty.

Nature of Material: Non-hazardous

Date of BND Certification: 16"h August 2018

Instructions for Storage and Use and Precautions for Handling:

1. BND S051 CRM should be used in controlled conditions, using calibrated equipment, by
trained personnel.
The CRM is to be dricd at 105+5'C for two hours before use.
3. After drying. the material should be protected from atmospheric moisture and used
immediately. Leftover portion in a vial, if any, should not be used at a later date.
4 The material should be stored under non-humid conditions to avoid any ingress of
moisture/CO.
5. Record of usage of CRM and the results must be maintained.

Expiration of Certification: The certification of BND 5051 is valid, within the measurement
uncertainty specified, until 31* January 2023, provided the CRM is handled and stored in
accordance with instructions given in this certificate. The certificate will be treated as
nullified if the storage and handling instructions are not followed.

Maintenance of Certification: NCB will monitor this BND over the period of its
certification. If substantive technical changes occur that aftect the certification before the
expiration of eertification, NCB will notify the purchaser.

BND 5051et released from NCB stock on:

Authorized by:

Dr. R. P. Pant Dr. S. K. Breja

Head, BND Division Joint Director and Head
CSIR-National Physical Laboratory Center of Quality Management,
Dr. K. S. Krishnan Marg Standard and Calibration Services
New Delhi-110012

For further Information, please contact: National Council for Cement and Building Materials
34 Km. Stone, Delhi-Mathura Road (NH-2), Ballabgarh, Haryana 121004,India;
Phone +91-129-4192239/303, +91-129-2242051, 191-129-4192222; Fax +91-129-2242100, +91-129-2246 175
Email: ncb.cqcagmail.com, necbm@ncbindia.com, info@ ncbindia.com website: www.ncbindia.com

This certificate shall not be reproduced without wrilten approval from CSIR-NPL, Delhi
Responsibilities for the maintenance ofthe certificate lie with National Council for Cement and
Building Materials.

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