Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 1463 (1983): Kaolin for Cosmetic Industry [PCD 19:Cosmetics]

-___ _ _,_ .~ _l_ l___ - .--._-..

_..

IS:1463-1963 ( Reaffirmed 1994 )

Indian Standard

SPECIFICATION FOR KAOLIN FOR COSMETIC INDUSTRY

( Third Revision )

First Reprint AUGUST 1998

UDC 622.361.2 : 665.58

0 Copyright 1983

BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

Gr 4 July 1983

IS : 1463 - 1983

lndiaw Standard

SPECIFICATION FOR KAOLIN FOR COSMETIC INDUSTRY

( Third Revision )

Cosmetics Sectional Committee, PCDC 19

Chairman Representing

DR S. S. GOTHOSKAR Directorate General of Health Services, New Delhi

Mem hers

f&RI N. C. CHATTERJEE National Test House, Calcutta SHRI V. G. DESHPANDE Ciba-Geigy of India Ltd, Bombay

Drt S. S. KARMARXAI~ ( Alternate ) DR A. S. DWATIA Consumer Education and Research Centre,

Ahmadabad KM RANI AIWANI ( Akvzate )

SHRI W. M. FEKNANDES Food & Drug Administration, Maharashtra State, Bombay

DR S. N. IYER Johnson &Johnson Ltd, Bombay SW~ USHA R. Josa~ ( Alternate )

SWT T. JACOB DR G. 1~. MAD-&N

Lady Irwin College, New Delhi Hindllstan Lever Ltd, Bombay

SHRI GUR~ZEP SJNGH ( Alternate ) SHRI R. C. MEHTA Drugs Conrrol Administration, Government of

SHRI J. P. GAWATRA ( Alternate) Gujarat, Ahmadabad

SRRI A. M~NHAZ~DDIN Millet Rochas Pvt Ltd, Madras KM NASRIN BEQAM ( Alternate )

SHRI N. A. NIM~ALKAR Fragrance & Flavour Association, Bombay SHRI F. F. PATANWALA M/s E. S. Patanwala, Bombay

SHHI N. K. SANYAL ( Alternate ) SARI S. RAMASWADZY Directorate General of Technical Development,

New Delhi SHKI S. N. AGARWAL ( Alternate )

SHRI K. S. RAO Swastik Household and Industrial Products Pvt Ltd. Bombay

SHRI C. R. KR~SHNAMOOR~HY SRRI D. J. RI~E~RO

( Alternate ) L&m& Ltd, Bombay

SERI B. S. BARGE ( Alternate )

( Continued on page 2 )

BUREAU OF INDIAN STANDARDS This pubhcatmn IS protected under the lndmn Copyright Act ( XIV of 1957 ) and reoroduction in whole or in part by any means except with written permission of the publisher shall be deemed to be an infringement of cop&&t under the raid Act.

IS :1463 - 1983

( Continued from page 1 )

Members Repewhg

SHRI A. C. Roy Indian Soap and Toiletries Makers’ Association, Bombay

SHRI P. ROY Bengal Chemical & Pharmaceutical Works Ltd, Calcutta

DR A. N. BASU ( Alternate ) DR S. K. Roy Central Drugs Laboratory, Calcutta

Dn P. C. HOSE ( Ahrnate ) SHRI v. SWARAM Basic Chemicals, Pharmaceuticals & Cosmetics

Snnr I. SUNDARESH ( Alternate ) Export Promotion Council, Bombay

SXTUSHASUKTRANKAR Consumer’s Guidance Society, Bombay SMT USH.~ KAMERKAR ( Alternate )

SHRI M. S. THA~~~IL Godrej Soaps Ltd, Bombay SHRI N. G. IYW. ( Alternate )

SHRI M.S.S 4XlWA, Director General, IS1 ( Ex-ofiio Member ) Director ( P & C )

Secretary

SHRI T. R.‘RA;AQOP~J.AN Deputy Director ( P 15% C 1, ISI

Raw Materials and GRAS List Suhcommlttee, PCDC 19 : 1

&RI D. J. R~nmno

Members

Lakmc Ltd, Bombay

S;,F.I B. S. BARVE ( Alterrmte to Shri D. J. Ribeiro )

ASSISTANT COMMISSIONER ( Cos- Food & Drug Administration, Maharashtra State, METICS)

SENIOR SC&NT~F~C OFFICXR Bombay

CI,ASS I i CHEX ) ( Alternate ) SXRI V. G. DFSBPANI)E Ciba-Geigy of India Ltd, Bombay SHRI J. P. GAXATRA Drugs Control Administration, Gujarat State,

Ahmadabad SHRI R. D. DE:OD~~IZ ( .Ihmate )

,,I‘ s. N. IYEK Johnson & Johnson Ltd, Bombay SMT USHA R. JOSHI ( &err~ate )

Dn G. L. MADAN Hindustan Lever Ltd, Bombay SWRI GIYRUEEP

S~nr K. S. RAO SINOH Alternate )

Swastik Household Bombay

& Industrial Products Pvt Ltd,

SHRI C. R. KILTSI*N.~~~UOI~THY ( Alteumte )’ S&r K. L. R \TBI Sudarshan Chemical Industries Ltd, Pune

SHRI U. N. LIM.~YI: ( Alternate 1 DR S. K. ROY

Dx P. C. BOSE ( Alternate ) DR N. D. SII.\H

DR M. M. Dosrrr f Alternate ) SHEI N I\VINCIIANUHA R. SHAH

SHRI VlNODCRANDR.4 K. MEHTA ( Alternate )

SHRI M. S. TR_~KUR SKRI N. C. IYER ( Alternate )

Central Drugs Laboratory, Calcutta

Geoff:ey Manners & Co Ltd, Bombay

Devarsons Pvt Ltd, Ahmadabad

Godrej Soaps Ltd, Bombay

2

IS:1463-1983

lndiun Standard

SPECIFICATION FOR

KA.OLIN FOR COSMETIC INDUSTRY

( Third Revision )

0. FOKEWOR1)

0.1 This Indian Standard ( Third R evision ) was adopted by the Indian Standards Institution on 9 June 1983, after the draft finalized by the Cosmetics Sectional Committee had been approved by the Petroleum, Coal and Related Products Division Council.

0.2 This standard was originally issued in 1959 and subsequently revise.d in 1967 and 1977. Initially while reviewing this standard the Sectional Committee had agreed to indicate separately the essential and optional requirements. Subsequently, this was found non-implementable for certification and, therefore, in this revision a single set of requirements only has been stipulated.

0.3 In cosmetics prepared from kaolin, freedom from grit is an important attribute. In the absence of any reproducible method of test for this characteristic, the following method may be used:

Take a 20 g sample of the material in a beaker and wet it with a little rectified spirit. Remove, by overflow in a carefully control- led steady steam of water, a larger portion of the material. The grit being heavier will remain in the beaker along with some kaolin. Test the residue by rubbing between the finger and the thumb for the presence of grit.

0.4 In the cosmetic industry, kaolin is used in the manufacture of face powder, talcum powder, toothpaste, toothpowder and solid dentifrices.

0.5 In the preparation of this standard, assistance has been taken from Specification No. 23 ‘Kaolin’, issued by the Toilet Goods Association, USA.

0.6 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in

3

__-_*_..

IS: 1463 - 1983

accordance with IS : 2-1960*. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

1. SCOPE

1.1 This standard prescribes the requirements and methods of sampling and test for kaolin ( china clay ) for use in cosmetic industry.

2. REQUIREMENTS

2.1 Description - The material shall be a finely powdered, natural mineral consisting essentially of hydrated aluminium silicate. It shall be free from grit ( see 0.3 ). The material is essentially insoluble in water and mineral acids.

2.2 The material shall also comply with the requirements laid down in Table 1 when tested according to the methods prescribed in Appendix A. Reference to the relevant clauses in Appendix A is given in Table 1.

3. PACKING AND MARKING

3.1 The material shall be packed in well-closed containers as between the purchaser and the supplier.

3.2 The packages shall be securely closed and legibly marked following information:

a) Name of material;

b) Manufacturer’s or supplier’s name;

c) Mass of the material in the package;

d) Recognized trade-mark, if any; and

co1 4 of

agreed to

with the

e) Batch number to enable the lot of manufacture to be traced back from records.

3.2.1 The product may also be marked with Standard mark.

3,3 The use of the Standard Mark is governed by the provisions of the Bureau of Indian Standards Act, 1986 and the Rules and Regulations made thereunder. The details of conditions under which the licence for the use of Standard Mark may be granted to manufacturexs or producers may be obtained from the Bureau of Indian Standards.

*Rules for rounding off numerical values ( revised ).

4

IS: 1463-1983

TABLE 1 REQUIREMENTS FOR KAOLIN FOR COSMETIC INDUSTRY

SL CHARACTERISTIC No.

(1) (2) i) Identification test

ii) Fineness:

a) Retained on 90-micron IS Sieve, percent by mass, Affax

b) Retained on 45-micron IS Sieve, percent by mass, Max

iii) Matter soluble in dilute hydrochloric acid, per- cent by mass, Maw

iv) Heavy metals ( as Pb ), ppm, Max

v) Arsenic ( as Ass% ) > ppm, &fax

vi). Bulk density

vii) Loss on ignition, percent by mass, Max

viii) Iron

ix) Carbonate

( Clause 2.2 )

REQUIRI MENT

(3)

To pass the test

0.1

2.0

2.0

5

2

As agreed to between the purchaser and the supplier

15.0

To pass the test

To pass the test

MTTHCII OF TEST ( REF TO CL No. IN APPENDIX -4 )

(4)

A-2

A-3

A-4

A-5

A-6

A-7

A-8

A-9

A-10

4. SAMPLING

4.1 The method for preparing representative test samples m&erial and the criterion for conformity shall be as given in dix B.

of the Appen-

IS : 1463 - 1983

APPENDIX A

( c~nu.st: 2.2 )

METHODS OF TEST FOR KAOLIN FOR COSMETiC INDUSTRY

A-l. QUALITY OF REAGENTS

A-l.1 Unless specified otherwise, pure chemicals and distilled water ( see IS : 1070-1977* ) shall be employed in tests.

NOTE - ‘Pure chemicals ’ shall mean chemicals that do not contain impurities which affect the results of analysis.

A-2. IDENTIFICATION TEST

A-2.1 Reagents

A-2.1.1 Sodium Carbonate - anhydrous.

A-2.1.2 Hydrochloric Acid - dilute ( 1:4 ).

A-2.1.3 Ammonium Chloride - solid.

A-2.1.4 Ammonium Hydroxide - solution.

A-2.2 Proizedure - Fuse 02 g of the material with 1 g of anhydrous sodium carbonate to a clean melt and cool. Boil the residue with water, allow to sett!e in a water-bath. Filter the residue with water. Acidify the filtrate with hydrochloric acid, evaporate to dryness and bake on a hot-plate; cool. Warm the residue with dilute hydrochloric acid and make it ammoniacal with ammonium hydroxide solution. A white gelatinou; precipitate conforms the presence of aluminium.

A-3. DETERMINATION OF FINENESS

A-3.1 Procedure for Material Retained on 90-micron IS Sieve - Place about 10 g of the material, accurately weighed, in 90-micron IS Sieve and wash, first by means of a slow stream of running tap water and then with a fine stream from a wash bottle until all the material that can pass through the sieve has passed. Let the water drain from the sieve, then dry the sieve containing the residue on a steam-bath. If there is any residue, carefully transfer it on to a tared watch glass and dry it to constant mass at 105 f 2°C.

*Specification for water for general laboratory use ( second revision ).

6

-. .._. _-__-._ .-

IS: 14630 1983

A-3.2 Calculation

Material retained on the specified sieve, percent by mass = 100 *$-

where

m = mass in g of the residue retained on the sieve, and

M = mass in g of material taken for the test.

A-3.3 Procedure for Material Retained on 45-micron IS Sieve - Repeat the procedure prescribed in A-3.1 using a fresh quantity of the material and 45-micron 1S Sieve. Calculate as given in A-3.2.

A-4. DETERMINATION OF MATTER SOLUBLE IN DILUTE HYDROCHLORIC ACID

A-4.1 Reagent

A-4.1.1 Dilute Hydrochloric Acid - approxitiately 5 N.

A-4.2 Procedure - Mix about 5 g of the material accurately weighed, with 50 ml of dilute hydrochloric acid in a 250-ml beaker. Cover the beaker with a watch-glass and warm the contents on a steam-bath. Digest the contents of the beaker for about half an hour and filter. Wash the residue with warm dilute hydrochloric acid. Evaporate the filtrate to dryness and dry at 105 art 2°C to constant mass.

A-4.3 Calculation

Matter soluble in dilute hydrochloric acid, percent by mass = 100%

where

m = mass in g of the dry residue in the dish, and

M = mass in g of the material taken for test.

A-5. TEST FOR HEAVY METALS

A-5.0 Outline of the Method - The brown colour produced by the material with hydrogen sulphide solution is matched against that produced with standard lead solution.

A-5.1 Apparatus

A-5.1.1 JVessler Cylinders - 50 ml capacity.

A-5.2 Reagents

A-5.2.1 Perchloric Acid - 60 percent ( m/m ).

7

-

IS : 1463 - 1983

A-5.2.2 Hydrofluoric Acid - 40 percent ( m/m ).

A-5.2.3 Citric Acid

A-5.2.4 Ammonium Hydroxide - 1~10 ( v/v ).

A-5.2.5 Hydrogen Sulphide Solution - saturated, freshly prepared.

A-5.2.6 Standard Lead Solution - Dissolve 1.600 g of lead nitrate in water and make up the solution to exactly 1 000 ml. Pipette out 10ml of the solution and dilute it again with water to 1 000 ml. One millilitre of the final solution contains 0.01 mg of lead ( Pb ). The solutionshould be freshly prepared.

A-5.3 Procedure - Place 2’000 g of the material in a platinum dish and incinerate for about 2 hours at 525 to 550°C. Cool and treat with 5 ml of perchloric acid. Take to fumes on a hot-plate with three successive portions of hydrofluoric acid. Cool and dilute with water. Filter the solution, if necessary with suction, through a fine fritted glass filter, catching the filtrate in a 500-ml glass-stoppered conical flask, Transfer the solution to a Nessler cylinder, add 10 g of’ citric acid and adjust to pH 3.0 to 3.4 by adding ammonium hydroxide ( yellow to purple colour with bromophenol blue ). Add 10 ml of hydrogen sulphide solution and mix. Carry out simultaneously a control test using 1 ml of standard lead solution and the same quantities of other reagents as used in the test with the material. Allow the cylinder to stand for 10 minutes and compare the colour in the two cylinders.

A-5.3.1 The material shall be taken as having satisfied the require- ment prescribed in Table 1 if the intensity of colour produced in the test with the material is not greater than that produced in the control test.

A-6. TEST FOR ARSENIC

A-6.0 Outline of the Method - The stain obtained on mercuric bromide paper by arsine is compared with that obtained with standard arsenic solution.

A-6.1 Reagents

A-6.1.1 Concentrated Sulphuric Aeid - see IS : 266-1961*.

A-6.1.2 Concentrated Xtric Acid - see IS : 264-1976t.

A-6.1.3 HydroJuoric Acid

A-6.1.4 Mixed Acid - Dilute 1 volume of concentrated sulphuric acid with 4 volumes of water and to this add 10 g of sodium chloride for each 100 ml of solution.

*Specification for sulphuric acid ( second revision ). tspecification for nitric acid ( second reoi.rb~ ).

IS : 1463 - 1983

A-6.1.5 Ferric Ammonium Sulphate Solution - Dissolve 84 g of ferric ammonium sulphate in water with IO ml of mixed acid and make up to

1 litre.

A-6.1.6 Concentrated Hydrochloric Acid - see IS : 265-1976*.

A-6.1.7 Stannous Chloride Solution - Dissolve 80 g of stannous chloride in 100 ml of water containing 5 ml of concentrated hydrochloric acid.

A-6.2 Procedure

A-6.2.1 Place 1.000 g of the material in a platinum dish and incine- rate for about 2 hours at 525°C. Cool and treat with a mixture of 5 ml of concentrated sulphuric acid and 5 ml of concentrated nitric acid. Take to fumes on a hot-plate, cool and again take to fumes with three successive portions of hydrofluoric acid. Cool and dissolve cautiously in water and make up the volume to exactly 100 ml.

A-6.2.2 Carry out the test for arsenic as directed in IS : 2088-1971 t taking 10 ml of the solution obtained in A-6.2.1 into a Gutzeit bottle, then adding to it 20 ml of water. 2 ml of ferric ammonium sulohate solution and 0.5 ml of stannous chloride solution. obtained with that produced with O*OOO 2 mg ( AssO:{ ),

A-7. DETERMINATION OF BULK DENSITY

A-7.1 Apparatus

A-7.1.1 Assemble the apparatus as shown in Fig. measuring cylinder A shall be ground flat and . . ._

Compare the &stain of arsenic trioxed

1. The base of the the empty measuring

cyhnder A together with the rubber bung shall weigh 250 & 5 g. It shall be accurately calibrated to 250 ml with an error, if any, of less than one millilitre. The distance between 0- and 250-ml graduation on the measur- ing cylinder A shall be not less than 220 mm and not more than 240 mm. The distance between the flat-ground part of the base of measuring cylinder A and the rubber base pad B, when the measuring cylinder A is raised to full height, shall be 25 f 2 mm.

A-7.1.2 Rubber Base Pad - The rubber base pad B shall have shore hardness of 42 to 50.

A-7.1.3 Balance - Pans of the balance shall be at least 10 cm in diameter. The balance shall be sensitive to less than O-1 g.

A-7.2 Procedure - Sieve about 40 g of the material through 250- micron IS Sieve on to a tared glazed paper and weigh it accurately. Slip the powder gently and smoothly into the measuring cylinder, which

‘Specification for hydrochloric acid ( second m&inn ). TMethods for determination of arsenic (first revision ).

9

IS : 1463 - 1983

should be held at 45” to the vertical, without knocking or squeezing. Assemble the apparatus as shown in Fig. 1. With the thumb and four fingers of one hand, gently grasp the upper part of the cylinder and, with- in one second, lift it about 25 mm ( taking care not to jerk the cylinder by knocking it against the upper stop ), then let it drop. iTote the volume after dropping it once. Continue lifting and dropping until 50 complete drops have been given to the cylinder. During the operation, give a gentle turn of about 10” in clockwise direction to the cylinder after every two drops. As soon as 50 drops are completed, raise the cylinder to eye level and read the volume of the material.

All dimensions in millimetres.

FIG. 1 APPARATUS FOR DETERMINATION OF

A-7.3 Calculation

Bulk density in g per ml:

M a) after one drop = -

h

b) After 50 drops = -$ 30

where

BULK DENSITY

M = mass in g of the material taken for the test,

V, = volume in ml of the material after one drop, and

Vso = volume in ml of the material after 50 drops.

10

i /

IS : 1463 - 1983

A-8. DETERMINATION OF LOSS ON IGNITION

A-8.1 Procedure - Weigh accurately about 4 g of the material in a crucible and heat at 105 f 2°C in an oven. Heat the dish with the dried material at red heat to constant mass. Cool in a desiccator and weigh.

A-8.2 Calculation

Loss on ignition, percent by mass = 100 (M - m) c__ -_

M

where

M = mass in g of the material taken for the test, and

m = mass in g of the ignited material.

A-9. TEST FOR IRON

A-9.1 Reagent

A-9.1.1 Sodium Salicylate

A-9.2 Procedure - Triturate 2’0 g of the material with water in a mortar. Add 0.5 g of sodium salicylate.

A-9.2.1 The material shall be taken to have passed the test if not more than a very slight reddish tint is produced.

A-10. TEST F,OR CARBONATES

A-10.1 Reagent

A-10.1.1 Dilute Hydrochloric Acid - approximately 5 N.

A-19.2 Procedure - Mix about 5 g of the material with 50 ml of dilute hydrochloric acid in a 250-ml beaker. Cover the beaker with a watch- glass and warm the contents on a steam-bath. Observe if there is any effervescence.

A-10.2.1 The material shall be taken to have passed the test if no effervescence takes place.

11

IS :1463 - 1983

APPENDIX B

( Clause 4.1 )

SAMPLING OF KAOLIN FOR COSMETIC INDUSTRY

B-l. GENERAL REQUIREMENTS

B-1.0 In drawing, preparing, storing, and handling test samples, the following precautions and directions shall be observed.

B-l.1 Samples shall not be taken in an exposed place.

B-l.2 The sampling instrument shall be clean and dry.

B-l.3 Precautions shall be taken to protect the samples, the material being sampled, the sampling instrument and the containers for samples from adventitious contamination.

B-1.4 To draw a representative sample, the contents of each container selected for sampling shall be mixed as thoroughly as possible by suitable means.

B-l.5 The sample shall be placed in clean, airtight, glass or other suitable containers.

B-l.6 Each sample container shall be of such a size that it is almost completely filled by the sample.

B-l.7 Each sample container shall be sealed airtight with a stopper after filling and marked with full details of sampling, the date of sampling and the year of manufacture of the material.

B-2. SCALJZ OF SAMPLING

B-2.1 Lot - All the containers in a single consignment of the material drawn from a single batch of manufacture shall constitute a lot. If a consignment is declared to consist of different batches of manufacture, the batches shall be marked separately and the groups of containers in each batch shall constitute separate lots.

B-2.1.1 Samples shall be tested from each lot separately for ascertain- ing conformity of the material to the requirements of the specification.

.d :

B-2.2 The number of containers (n) to be chosen from the lot shalI depend on the size of the lot (N) and shall be in accordance with Table 2.

12

IS: 1463-1983

B-2.3 The containers to be selected for sampling shall be chosen a~ random from the lot till requisite sample is obtained and for this purpose random number tables shall be used. In case such tables ( see IS : 4905- 1968* ) are not available, the following procedure may be adopted:

Starting from any container, count them as 1,2, 3, .,.... . . . . r ana so on, in a systematic manner, where r is the integral part of JV/n. Every rth container thus counted shall be withdrawn from the lot.

TABLE 2 NUMBER OF CONTAINERS TO BE SELECTED FOR SAMPLING ( Clauses B-2.2 and B-3.1 )

LOT SIZE

.N

(1) 3 to 50

51 to 200

201 to400 401 to 650

651 and above

SAMPLE SIZE n

(2)

3 4

5 6

7

B-3. TEST SAMPLES AND REFEREE SAMPLE

B-3.1 Preparation of Test Samples - Draw with an appropriate sampling instrument a small portion of the material from different parts of each container selected ( see Table 2 ). The total quantity of the material drawn from each container shall be sufficient to conduct the tests for all the characteristics given in co1 2 of Table 1 and shall be not less than 200 g.

B-3.1.1 Thoroughly mix all portions of the material drawn from the same container. Out of these portions, equal quantity shall be taken from each selected container and shall be mixed well together so as to form a composite sample weighing not less than 500 g. This composite sample shall be divided into three equal parts, one for the purchaser, another for the supplier and the third for the referee.

B-3.2 Referee Sample - The referee sample shall consist of the composite sample marked for this purpose and shall bear the seals of the purchaser and the supplier. It shall be kept at a place agreed to between the purchaser and the supplier and shall be used in case of dispute between the two.

*Methods for random sampling.

13

IS : I463 - 1983

B-4. NUMBER OF TESTS

B-4.1 Tests for all the requirements given in 2 shall be conducted on the composite sample.

R-5. CRITERION FOR CONFORMITY

B-5.1 A lot shall be declared as conforming to this specification if the composite sample satisfies all the requirements given in 2.

14

BUREAU OF INDIAN STANDARDS

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*Sales Office is at 5 Chowringhee Approach, P.O. Princep Street, 271085 CALCUTTA 700072

TSales Office is at Novelty Chambers, Grant Road, MUMBAI 400007

*Sales Offlce is at ‘F’ Block, Unity Building, Narashimaraja Square, BANGALORE 560002

309 65 28

222 39 71

Printed at Simco Printing Press. Delhi