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 1158 (1973): Corn Flakes [FAD 16: Foodgrains, Starchesand Ready to Eat Foods]

(;r 4

IS: 1158,. 1973

,llIC/itlll St{111l/{lr{1

SPECrFI(~l\.~rION .F()RCORN I~'l~A'Kl~S

( First Revision)

First Reprint OCT()BER 1983

( !rl(Olporating .Alncndn,cnts No.1 and 2 )

tIl)e f64.696"I: 63.5°15

S CUPJ,'righJ 1983

I N () I A N S or ANI) A R 0 SIN srI rr UTI 0 Nt.tANAK IUIAVAN. 9 BAHA1JUR SHAH ZAPAR MARO

N'EW DELHI 110002

July t 97 3

Reaffirmed 2010

IS ,1158-1973

Indian StandardSPECIFICATION FOR

CORN FLAKES

(First Revision)Foodgrains, FoodKt"ain Products and Edible Oilseed Flours

~ectional Committee, AFDC 32

Chairman

DR S. V. PINOA LF:

MemberJSHnI MOHAMMAD KIIASIM An1l:~n

DR N. S. AnRAwATJ

SURI KANCllP:JU,A ApPA RAO

SHRI J. H. SARMA (Alternate)SlUU M. C. BADA.MI

SHn,1 P. C. JoR Kl ( Alt,rnafe )SHRIS.N.BANRRJ~E

Reprt.'rtnl;ng

Food Corporation of India, New Delhi

nirectorat~ of ()ilsecds DcvPloptllent, Gov{'rnmentof India, J-Iyderahad

I)irectorate of Storage & Inspection (!\linistry ofAgriculturp. ), New Delhi

Aridhra Prade~h Ri('~ ~{il1p.rs' Association,Vijayawada

Mod('rn Bakeri~s (India) Ltd, New I)plhi

Food and Nutrition Board ( Ministry of Agriculture),New Delhi

SURI G. D. SHARMA (Alternate)SHRI B. S. BHATIA I)effin(~e Food Rpst~arc.h Laboratory, Mysore

SHR) K. S. JAYARAMA.N (Alttrnate)Dn N. R. BIlow Solvent Extractors' Association of India, BombaySKRt D. S. CUADRA Central Cornnlittt>t" for Food St.andards ( Ministry of

Healt.h & Fatuily Plannin~), New Delhi!)lRF:C-'rOR Ct'ntral R.icc Research Insti.ulP, Cuttack

}{lCE l'F.cUNoT.ooIS'l' (" AlI,rnale ) -Slfltl SATYA N.\'RAIN (;UPTA Federation of AU India Fo()d~rain r)~alers' Associa-

t.ion, l)elhi -SIIRI A. S'-HlHA R.AO ( ALtt,.nalt )

l)a l-1. }\. JAIN Indian Council of Agricultural R~s{·arch, New D~lhi

SHRI G. D. JO~Hl ~.tate 'rrading Corporation of Iildia Linlited. N~wn~lhj

SR.Rl K. B. JAIN ( ..flternatt~ )DR S. S. KA.l..DAG lijndu~tan Lt'ver Ltd, Rornbay

SllR 1 N. RAMACHANORAN ( A/lnnalf)SHRJ R. S. RAM K I ~ K 0 It E A~ra'Dall !\lill~ :\~l'()('iati()n, Agra

KIIAN1>li:l.WAl~

SnlU (;AUR.I SH.\ N'K.4 R CARO

( AIt,r"ntr )

( Continwd on pagf 2 )

(il COJ!Y,ight J9AJINt)IAN S"I"A:\.lO.\RT)S INSTrl'UTl(lN

l'his publication IS prolected und~r the Indlarl CO/JJ"iKht Ad (XI\' of 1957) andrr.productioll in who)~ or in pal t by any rnean~ except wlth wnr.l~n permi"lon ofthe publisher ~hall be de-emcd to be an infringem(~ntof copyriKht under the said Act. ,

,IS ,1158-1973

( Co",i~d from pagt I )

kftmb"r.f RejJresentin.f!

SHRI F. G. T. MEN}~ZES Directorate of Sugar & Vana~pati (Ministry ofAgriculture), New I)elhi

SURf D. VESKAT.O\PPAIAJI (Alternate)DB B. I). NARANU Public Analyst, Government of India, llaryanaDB B. V. RAMAHO\S'rtU Ncltioll"'al Inst.itute of Nutrit.ion, JlyclerahadSMRi S. RAMA8WAMY Dire(:t:()rat(~ (~enera) of 'rechnic.al l)eve}opm(\nt,

New l)elhiSHRI I. K. KAPtJU ( Alternate)

SHRI P. RAMDAS C~ntral Warchou~jngCorpora1ion, Npw DelhiSHRJ N. K. MUltALIlHIARA RAO J)irec:torate of ~1arketing& Illspe(~tion (~1inislry of

Agriculture), FaridabadSaRI R.. N. C~HATt!1tVEDJ (Alternate)

SURI R. B. RAO Ft'dpration of BisClli t !\1anu faclurers of l'ndia, I),·lh iSHRt J. B. PAM N" NY ( Alternate)

CoL M. C. SANYAL l)irpctorate of Supplies ann 'rransport, AnnyH eadquart{'rc;

In~it"ittltt',

I.lirector C;eneral, lSI (F:x-o,#cio Altmhtr)

LT-COJJ (), P. KAl'Un. (Altffrwt,)DR M. C. SAXENA U. P. A1-{ric-ultural Univprsity, Pantn,igarSnRJ S. R. Sn UltPALEK Ale Ct~Jltral Food 'redllJolo~~ical H.. c-sparch

(CSI R ), ~'fysorf'

Drt H. S. R. 1)"~~lKt\cHAn (Altfrnatt')IlK StJKlfln;v SINOJI Punjah Agricultural University, Llldhiana

SHRT {;. S. BAINB (Alt"llalf )SHRl S. P.VIUMANJ rrhe Rolh'r Flour Millt'rs' Feneration of India, N(·w

IJelhiSURI SAN'rANu CHAtTTjUVnl ( Alterllf.lle)

DB. D. S. \\' AUT....; lJaryana AgricuIluraI lJnivcrsity, }-li~sar

DR R. L, ~IA'.rToo (Altt.rnflte)DB llAIU BUAOWAN,

Director ( A.Kri & }i'ood)

StCrtla~y

SUIU (;. S. \rII.lCUlJ

l>t~puly [)irf'ctor ( Agri &. Fond), lSI

Foodgrain Products Subcoffilnid", l\FJ)C~ 32 ; 2

Convent'

SRBJ S. P. VUtMANl Roll~r Flour Millers" F'ec{er:Hion of India, N{'w l)t~lhi

Mnnht,s

SUBI M. C. BADAMISURI S. S. BHA'rIASHat D. S. CHAUHA

Modern Bakf-!ri('s ( In'lia : Llfi, ~t'\"· [ll-IhiFuod Corporation '(",1' (nd~a. ~('\~' I)elhiCentral Committt'~ for Food Standard:c;, l';t''',v l)clhi

( r,'()lllimud on fJ••(t 14 )

2

1811158~ I'"

l C,Jtlillutl frDm /Ml' 2 )

MmIJ,r,

S8UO. ,-.GA-RGSB~>E. iC.. JAYANAaAYANAlf

SBm K. N. DUTT (AIt"nat,)SRal P. o. KHAlfWA

S••I B. M. LAL ( Altemat, )DB A..> P. MABADEVAK

DB U. Y. RBOI: ( AU"nat, )SR.I N. C. MAULIK

SHa, M. G. S.'TBE

SR_I J. M. '1'UAPAB

R,/W,s,nti",

Department of Food ( Ministry of Agriculture)Mohan Meakin Brewerit'l Limited, Ghaziabad

Britannia Biscuit Co Ltd, New Delhi

Hindustan Lever Limited~ Bombay

Hindustan Breakfast Food Manufacturi.lg Factory,Delhi

Federation of Biscuit Manu'facturers of India, DelhiAll India Starch Manufaclllrel'~' Association Private

l..inlitoo, Bombay

AMENDMENT NO. 3 OCTOBER 1998TO

IS 1158: 1973 SPECIFICATION FOR CORN FLAKES

( I·'irst Revision)

( Page 6, clause A-I) - Insert the following new cia use:

'A-I.l l'~parationof Sample -Grind in a pestle and Inortar about 50 g of theInaterial so tbat at leasl 90 percent passes through 425-mi<."ron IS Sieve. Transfertbis prepared s3nlple to a well-stoppered glass bottle for subsequent usc.'

(PlI1?e 6, cll1llse A-I.I ) - RCnUJ11bcr as A-t.2. Delete first sentence.

( Page 7, elfluse B-Z.I ) - Delete.

( PtlKe 7, cltllises H-2.Z, U-2.Z.1 and 8-2.2.2 ) -- Renulllber as 11-2.1.li-2.I.I, and 1\-2.1.2.

(Page 7, eilluses 8 ..2.1 (lnd 11-3.1 and page 8, clause 8-3.2 ) - Substitute'( see A-tel)' for '( se(~ B-l.t )'.

(Page9, clalls(J 1)-2.1 )-~Substitutc '(see~J\ .. l.l)' for '(see 11-2.1),.

(FAD 16)

Rcprography Unit, B15, New Delhi, India

IS: 1158 -1973

Indian StandardSPECIF'ICATION FOR

CORN FLAKES

(First Revision)

o. }c~ 0 R E W 0 R D

0.1 rfhis Indian Standard (First Revision) was adopted by the IndianStandal'd~ Institution on :~l January 1973, afu~r the draft finalized bythe Foodgraills, Foodgrai ns Products and Edible ()ilsccd :Flours Sectional(~oInn1itt.ec had heen approved hy the Agricultural and Food Products})ivision Council.

0.2 This standard \'\'as first issued in 19:>7. Si nee then, several prob­leln~, such as, incI'casp of. moistul"e during storage and breakage duringtransport have arisen, On the basis of extensive investigatiolls~ thisrevision incorporates the latest thinking of the (~onlmittee responsible fort he preparation of t his standard on these issues.

0.3 In the the preparation of this Indian Standard, due considerationha; bt~en giv~n to provisions stipulated under the Prevention of FoodAdulteration Act, 1954 and Ru les fraIned thereunder.· llowever, thisstandard is subjfAct to the restrictions inlposed under the Rules, where-ever applicablf'.

0.4 For the purpose of deciding \vhether a particular requirement of thisstandard is conlplicd \vith, the final value, observed or calculated, ex­pressing the res~J)t of ~ test or analysis, ~ha~l.. be rounded off il~ acco~dance\,vith IS: 2-1960*. rhe number of slgruhcaflt places retaIned III therounded off value should be the same as that of the specified valuein this standard.

1. SCOPE

1.1 This standard prescribes the requirements and the methods of sampl­i ng and test for corn flakes .

• ltult'5 for rounding off nunlt~rical values ( "tvised ).

3

1I,.ll58-1t73

2. "RBQ,tJIREMENTS", .

2.1 Geaenl- Corn flakes shall bf:\ prt'pared from cleaned;' sound corn«'11 mays). The corn shall be scoured, degermed, dehulled and poli­shed, and then cooked after mixinR with malt, sugar and salt, follo,v~dby flaking, partial drying and finally to toasting..

2.2 D..eriptioa - Corn flakes shall be tender and crisp, rca~onahlyuniform in ize, of good flavour and golden brown in colour. Corn fla­kes shall. possess good characteristic taste and odour and shall be freefrom rancid, musty, sour and other undesirable tastes or odour~. Theflakes shall be free from living insects and moulds and shall' be free fromdead ins-eets, insect fragments and rodent contamination visible to theeye (corrected, if necessary for abnormal vision) with the aid of a ~uit-

able magnificatiC?n (not exceeding X 10). .

NOTE - Thp appearance. ta~h' and noonr "hall bE' determined by sensory evalu­ation tests.

2.2.1 Not lnore than 8 percent by mass of the material shall passthrough 2·0o-mm IS Sieve (.ret IS: 460-1962* ).

2.3 Barichmeats - Corn flake~ may be enriched by the addition ofvitamin~ and ·mineral~.

2.4 Corn flakes shall also conform to the requirements given in Table 1.

TABLE 1 REQUIREMENTS FOR CORN FLAKES

SL CHARAM')~R1RTH~ R I~Q fit REMRNT METHOD Oy TERT

No. (REF TOApPENDIX)

(I) (2) (3) (4)

i) Moisture, pflrcertt by Ina55, Aln:r 7'5 A

ii)" Total ash, t'xclud"ing lodiuna chloridp 1-0 B(on dry basil), perC'ent by mass,Max

iii) Acid insoluble ash ( on dry basis), per- 0·05 (~

cent by rnas..., Max

iv) Crude fibre ( on tify ba~is), ppr(~ent b)" 0'75 Dmass, Max

v) Alcoholic acidity ( as H.S().) \vith 90 0'10 Ep~rC"~nt aJ("ohol, pp.rC"en( by rna,,!'.Max

.SpecificatiClD for teat iieves ( "vis,d).

IS 11158·1973

3. PACKING AND MARKING

3.1 PacklDl-Corn flakes !;hall ht' packed ih high dcn~ity polyethylenebags alone or first paC"kcd in hi~h density pnl\"f:lthylene baA'S, prop~rJysealed and then placed in cardhoard carton~. the packages shall b(\ ofsuch sizes as agreed to het\v~en th~ purchas('r and the vendor.

3.1.1 The bags USt~d for packing corn flakes shall be made of 300 gauKchigh density polyethylE'ne of thickness 0·075 mm.

3.2 Marldag - Each rontainrr shall be suitably marked so as to g-ive thefollowing information:

a) Name of the material;b) Ifenriched with vitamins (I) the word' vitaminized' placed in

brackets, below (a), and (2) the d~tails of enrichnlcnt;c) Name of the manufacturrr;d) Batch or code number; and.~) Net weight.

3.2.1 Each containf't· may also he marked "'ith the lSI Certification~ark. ·

NOTB - The use of the lSI Certification Mark is governed by the prcvj~jon9of theIndian Standards Institution (Cert.ification Marks) Act and the I{ules and Regu-.lations made thereunder. The lSI f\1al'k on products covered by an Indian Standardconvt'y. the assuranC(' that they ha\'e been produced to comply \vith..the requiremenuof that standard under a well-defined system ofinspection , testing and quality controlwhich is devised and supervised by lSI and operated by the produc('r. lSI markedproducts are also contin,uously checked by lSI for confofrnity to the standard a. afurther safeguard. D~taj)1 of conditions under which a licence for the use of the lSICertification Mark may ~e granted to manufacturers Of processors, may be obtainedfrom the Indian Stannarcl5 Institution.

4. SAMPLING

4.1 Representative sanlfle~ of the material for testing conformity to thisstandard shall be dr.wn according to the method prescribed inAppendix F.

5. TESTS

5.I'Tests shall be carried out as prescribed under 2.2, the appropriateappendices specified in col 4 of Table 1 and in 3.1.

5.2 QJaallty of a~leDt.- Unless specified otherwise, pure cJtemicalsshall be employed in tests and ~istilled wate~ ~ see IS: l070-196~ ) shallbe used where the use of water as a reagent IS Intended. '

NOT. - 'Pure chemicals' shall mean chemicals that do not· contain impuriti.which affect the result of analyaia•

•Specification for ~ater, diltiUed qUfllity ("vised).

5

11_1151-117'

APPENDIX A[ T abl, 1t Item ( i ) ]

DETERMINATION OF MOISTURE

A-l. PROCEDURE

A-I.l Grind in a pestle and mortar about 50 g of the material su thatat leut 90 ~cent passes through 425-micron IS Sieve. Weigh accu­rately about 5 ~ oftbe prepared sample in a suitable moisture dish, madeof ~rcelain, silica or platinum, previously dried in an electric oven andwelghed. Plac~ the dish in an electric oven maintained at 105:!: 1°C for5 hours. Cool the dish in a desiccator and weigh with the lid on.Repeat the process of heating, cooling and weighing at half-hour inter­vals until the loss in mass between two successive weighing! is less thanone milligram_ Record the lowest mass obtained.

A-2. CALCULATION

.&. "1 M · by 100 (M1 - M.).-A- olsture, percent mass -= M. _ M

where

M1 - mass in g of the dish with tlte material before drying,M. == mass in g of the dish with the material after drying, andM == mass in g of the empty dish.

APPENDIX B[ Tabl, I, Item (ii)]

DETBRMINATION OP TOTAL ASH, EXCLUDINGSODIUM CBLORmE

8-1. REAGENTSI

11-1.1 Stall...... 81lyer Nitrate SoI.dOD - 0-1 N.

8-1.2 Aaam...... Tlalocyaaate Solutl08 - Standardized again"'t0-1 N silver nitrate solution.

B-l.J DIlate Nitric Add 8oladoa-l :9. To 900 ml of water, add100 ml or concentrated nitric acid (sp gr 1·42) and Itir.

6

18.1151-1973

8-1.4 CoDe_trate. Mitne Acid Soladoa-4: 1. To 100 ml ofwater,add 400 ml ofconcentrated nitric acid (sp gr 1-42). Bring the contentsto boiling until colourless solution is obtained.

&-1.5- Ferric Al1IID ladicator 801.tloa- Prepare a saturated solutionof ferric alum in water and filter.

B-2.PROCEDVRE

8-2.1 PreparatloD or Sample- Grind in a pestle and mortar about 50 gof the material so that" at least 90 percent passes through 425-micronIS Sieve. Transfet" this prepared sample to a well-stoppered glass bottlefor subsequent use.

8-2.2 Ignite the dried material (~'~e B-2.1) in t~e dish over a Mekerburner for about 1 hOUT. Complete the ignition by keeping in a mufflefurnace at 600 ::i: 20°C until "grey ash results. Cool in a desiccator andweigh. Heat and dish again in the muffle furnace at 600 :I: 20°0 for30 minutes and cool in the desiccator. Repeat this process of heating,cooling and weighing untif the difference between two successiveweighings is le~s than one mHligram. Note the lowest mass.

8-2.2.1 Dissolve the a~h in 25 ml of the dilute nitric acid solution( 1:9). Filter through "Whatman filter paper No.1 or its equivalent,collecting"the filtrate in a lOO-ml graduated flask, and wash the contentsthoroughly with hot wat~r. Make the volume to 100 mI.

8-2.2.2 To a 25-ml aliquot of the filtrate, add excess of the standardsilver nitrate solution (~ nll). stirring well to flocculate the precipitateof silver chloride. Filte~ and wash the precipitate thoroughly with water.To the combined filtrate, add 5 rol of each of the ferric alum ii\dicatorsolution and concentratE$! nitric acid solution (4: 1). Titrate th, excessof silver nitrat~ with th~ standard ammonium thiocyanate solutjf)n to astable light brown colou~"end point. ' "

11-3. CALCULATION

8-3.1 Total ash (on dry basis), 100 (M - M)percent by mass .. M

1~ M

where

kl. == mass in g of the dish with the ash,

M = mass in g of the empty dish, and

MI ~ ma.~s in g of the dish with the dried Dlaterial (1,,8-2.1).,..I

·S.I.I51·-1973

N.2 Sodium chloride (on dry ba."i~), 5·85 ( V N - JJ: N' ) VIpercent by mass - - '~1 ~ MI" XV;

where

VI = volume in ml of the standard silver nitrate solution addedinitiall)',

Nt == normality of the silver nitrate solution,YI == volume in rol of the standard ammonium thiocyanate

solution required for titrating the excess of silver nitrate,Nt == normality ofthe standard ammonium thiocyanate solution

added,Ml == mass in g of the dish with the dried material (set B-2.1 ),M == mass in g of the empty dish,V. == volume in ml to which the filtrate wa~ made up, andY4 = volume in'ml of the aliquot of the filtrate taken for the

experiment.

..3.3 To obtain total asIi, excluding sodium <;hloride (on dry basis),percent by mass, deduct the 'value obtained under 11-3.2 from thatobtained under 8-S.1.

APPENDIX C[Table 1, Item (iii)]

DETERMINATION OF ACID INSOLUBLE ASH

.CJ-l. REAGENTS

0-1.1 DUate H)'clrocllioric Adcl- approximately 5 N, prepared fromconcentrated hydrochloric acid (Stt 18:265-1962*).

0-2. PROCEDURE

C-2.1 Weigh accurately about 5 g of the prepared sample in a suitabledish made of porcelain, silica or platinum previously dried in an electricoven and weighed. Ignite the material over a Meker burner for about1 hour. Complete the ignition by keefiog in a muffle furnace at600 :I: 20°C until grey ash results. Coo in a desiccator and weigh.Heat again in the muffle furnace at 600 :I: 20°C for half an hour and coolin the desiccator and weigh. Repeat this process of heating, forSO min~tes, cooling and weighing till the difference in weight betweentwo successive weighings is less than one milligram.

-Specification for h-ydrochloric acid (,IVi.fed).

8

IS: 1158· 1973

C-2.2 To the ash contained in the dish, add 25 ml of dilute' hydrochloricacid, cover with a watch glass and heat on a water-bath for 10 minutes.Allow to cool and filter the contents of the dish through Whatman filterpaper No. 42 or it~ equivalent. \Vash the filter pap~r with \,Yater till thewashings are free from the acid and return it to the di'ih. KE'ep it in anelectric air-oven maintained at 135 :I: 2°C for about 3 hou~_ Ig-llite in amuffle furnace at 600 :I: 20°C for 1 hour. Cool the dish in a desiccatorand weigh. Repeat the process of igniting in the muffle furnace, coolingand weighing at half-hour intervals till the differencE' in mass bet\veentwo successive weighings is less than· one milli~ram. Note the lowestmass.

0.3. CALCULATION

<:-3.1 Acid insoluble ash (on dry basis), _ 10000 (oMt - M)percent by ma~s (Atl, _ At!) ( 100 - m)

wher~

M'I. = mass in g of the dish witl) the acid insoluble ash,

M = ma~s in g of the empty dish,

M 1 = mass in g of the dish with the mat~rial, and

m = th~ percentagp of moiC\turp aC\ df'tprminfld in Appendix A.

APPENDIX D[T ahle 1, Item ( iv ) ]

DETERMINATION OF CRUDE FIBRE

·D-1. REAGENTS

D-l.0 ThE' fol1owin~ reagents are requirE'd.

D-l.1 Dilute Sulphuric Acid.!.... 1·25 pt'rc~nt ( "lIz' ), accurately prepared.

D-I.2 Sodium Hydroside Solutio. - 1-25 percent (m/v), aecuratelyprepared. -

0-1.3 Ethyl Alcohol- 95 percent by (lIlv).

D·2. PROCEDURE

D-2.1 Dry to constant mass, about 5 g of the prepared sample (see 8-2.1 )in an electlic air-oven at 105 * 1°0. Weigh accurately about 2-5 g ofthe dried material into a thimble and extract for abollt 1 hour withpetroleuln ether using a Soxhlet apparatus. Transfer the fat-free material

9

11.1111'··1173,

to .I-fitre flask•. Take 200 ml of dilute sulphuric acid in a 1ieaker andbring to· boil. Transfer the whole of the boiling acid to 'the flask contain­ing·the fat-free Jtlaterjal and immediately 'connect the flask with a water­cooled reflux conden'ier and heat, so that the contents of the flask begin toboil'within 1 minute. Rotate the flask frequently, taking care to keep thematerial from remaining on the sides of the .flask out of contact with theacid. Continue boiling for exactly 30 minutes. Remove the flask and

. filter through fine linen (abol1t 18 threads to the centimetre) held in afunnel, and wash with boiling water until the washings are no longeracid to litmus. Bring some quantity of. sodium hydroxide solution toboiling under reflux condenser. Wash the residue on the linen into theflask with 200ml of the boiling sodium hydroxide solution. Immediatelyconnect the flask with the reflux condenser and boil for exactly30 minutes.. Remove the ~ask and immediately filter through thefiltering cloth. Thoroughly wash the residue' with boiling water andtransfer to a Gooeh crucible prepared with a thin but compact layer ofignited a,besto·s. Wash the residue thoroughly, first with hot water andthen with about 15 ml of ethyl alcohol. Dry the Gooch crucible andcontents of 105:1: l°e in an· air-oven to constant mass. Cool and weigh.Incinerate the contents of the Gooch crucible in an electric muffle furnaceat 6OO:J: 20°C until all the carbonaceous matter is burnt. Cool theGooch crucible containing the ash in a desiccator and weigh.

0-3. CALCULATION

D-3.1 Crude fibre (on dry basis.), 100 (Ml - MI)percent by mass == --'--M---

whereMl == mass in g of Gooch crucible and cont~nts before ashing,M" == mass .in go of Gooch crucible containing asbestos and ash,

andJrl = mass in g of the dried material taken for the test.

APPENDIX B[ Table 1, Item (v) ]

DETERMINATION 01' ALCOHOLIC ACIDITY

£.1. REAGENTS

BeI.1 N.DtraI Eth,1 Meola•• - 90 percent by volume.

8-1.2 StaDdanl.8ocUam BJCb'odde a_dena - approximately 0·05 N.

.J-l.s ·PIa-.I~daaIeI. ladlcator Sol.doD -;-Disso!v.e 0·1 g of.p~eIlOlphtha1CID 18 lOO .. m.l or6-0 percent (vlo) rectified 8pwt.

10

IS 11158-1973

B-2. PROCEDURE

B-2.1 Weigh 5 g of sample into a conical glass-stoppered flask and add50 ml of neutral ethyl alcohol. Stopper, shake a~d allow to stand (or24 houn, with occasional shaking. Filter the alcoholic extraet. through adry filter paper. Titrate 10 ml of the combined alcoholic extract againststandard sodium hydroxide solution using phenolphthalein as indicator.Calculate the percentage of alconolic acidity as sulphuric acid.

B-3. CALCULATION

8-3.1 Alcoholic acidity ( as H.SO.), 24-52 YNwith 00 percent a1cohol~ percent by mass == M

whereV == volume in ml of standard sodium hydrande solution used

in titration,N == normality of sta~dard sodium hydroxide solution, andM == mass in g of the material taken for the test.

APPE·NDIX F

( Clause 4.1 )

SAMPLING OF CORN FLAKES

F·I. GENERAL REQUIREMENTS OF SAMPLING

F·l.0 In dra\ving, pre~ring, storing and handling samples, the follow­ing precautions and di~ections shall be observed.

F-l.1 Sample~ shall ta_en in a protected place not exposed to ,dam air)dll~t or soot. '

F-l.2 'fhe sampling in~trHlnenl shall he clean and dry \\rh(l~l us'd.

F-l.3 Precautions shali be taken to protect the samples, thel Inaterialbeing sampled, the sa~pling instrunlent and thp containers fof sanlplcsfrom adventitiolls-cont.arnination.

F-l.4 "rhe sanlples shall be plac~d in clean, odourless and· dry glasscontainers. '-rhe satnpJc eontainers shall ht" of ~lIch a size tha~: they are­alrnost conlplctely filled by the saolple.

F-l.5 Each container shall be sealed air-tight after' filling and markedwith full details of salnpling, batch or code number, narne of the manu­facturer and other important particulars of the consignment.

'-1.6 Salnples shall be stored in such a manner that the temperature ofthe material does not vary unduly from the nornlal temperature. .

11

1S·111II-lt73

1'-1.7 Sampling shall be done by a perso~ agreed to between the pur­chuer and the vendor, and in the presence of the f.urchaser (or hisrepresentative) and the vendor ( or his representative . .

.-2. SCALE OP SAMPLING

.-2.1 Lot - All the containers in a consignment belonsing to the samebatch of manufacture shall constitute a lot.

F-2.1.1 Samples shall be tested from each lot for ascertaining confor­mity of the material to the requirements of the specification•

• -2.2 The number of containen to be tested from a lot shall depend on~he size of the lot and shall be in accordance with Table 2.

TABLB 2 NUMBER 01' CONTAINERS TO BE SELECTED FOR SAMPLING

TOTAL NUMBBA O.CoNTAINE.R8 IN

'1'HE LOT

N

(1 )

1 or 2S to 15

16" 4041 " 110

111 " SOO301,,800Above 800

Nt1MBEK OJ' C'..oNTAINEBSTO BB SSI.EOTBD

(2)

All containers3

58

132232

P-2.3 The containers to be selected fOf sampling shall be chosen atrandom from the lot and, for this purpose, random number tables (SI' alsoIS: 4905-1968*) shall be used. In case such tables are not available,the following procedure may be adopted: a

Starting from any container, count them as I, 2, 3 ,. up to rand so OD, in a systematic manner. Every rth contain~r thuscotlnted shall be chosen, , being the integral part of N/" (seeTable 2).

FaS. TEST SAMPLES AND REFEREE SAMPLES

F-3.1 Prepa...tioD of lacUYlclaal Samples - Empty out the contentsof the container on a sheet of paper and mix thoroughly. Cone and

-Metbods (or random amplingt

12

IS: 1158-1973

quarter ac-; often a~ n('ccs~ary till about 150 ~ of the mat~l'ial i~ IC'ft. Fronlthis take about 7:' g of lh~ material and divide it into thrC'(' equal part~.

Each part so obtaint'd ~hall constitute an individual samplr rep)"e~entill~

the container and !\hall be lransfE'rred immedial('ly to thoroughly cleanand dry conlainers, sealed air-tight and lab~l1{\d \vi I h par'iculars Kivenin 'F-t.5. The individual samples so obtai n~d ~hal\ h(~ dividt'd intothree sets in such a way that each set ha., a s;unpl~ r~pre'\entinA' each~electf'd contain~r. One of the~e sets shall br mark~d for t hf' purrha!o\er,the oth~r fOT the vendor and the third for the fl'fC'r('('.

F-'.2 Preparation or a Composite Sample - Fronl I h~ material fromeach ~elected container remaining after the individual sample ha~

hpen taken, equal quantities of the material shall be takf'tl and r)lix~d

together so as to form a composite satnple weighin~ not I("~s than 150 g.Th·is composite sample shall be divided into three equal p~trt~ and tJ·ans­ferred to clean and dry glass containers and lallt~lled \vith the partirular~

given in P-1.5. One of these compositE' samples shall btl nlarkcd l()l" t hppurchaser, the other for the vendor and the third for th~ r(\fcre~.

F-3.3 Referee Samples-Referee samples shall con~i!"t of a s~t of indi­vidual samples ( ste F-:J.l ) and a composit(' sample (see P-3.2) markc-dfor this purpose and shall bear the seals of the purchaser and th(' vendur.These !\hall be kept at a place agreed to betwl'en th~ t\vo.

F-4. NUMBER OF TESTS

F-4.1 Tests for requiremen1:* given in 2.2 shall be conducted on ~ach ofthe samples constituting a set of individual test samples ( see F-3.1 ).

F-f.2 Te-sts for moisture, total ash, acid insoluble ash, crude fibre andalcoholic acidity, ~hall be conducted on thE' composite sample (Sft P-'.2 ).

F·5. CRITERIA FOR CONFORMITY

'-5.1 The lot shall be cOQ.ldered satisfactory in respect of the reqbirc­ments of F-4.1, if each indi9idual sample satisfips all the requirement,.

• -5.2 The lot shall be considered satisfactory in respect of the rcq~ire­ments of F-t.2, if the test results on th~ composite sample satisf~ thecorresponding requirements. .

'-5.3 The lot shall be declared to be in conformity with all the require­ml·nts of this specification, if it has been found satisfartory in accordancewith F-5.1 and '-5.2.

13

INTERNATIONAL SYSTE!\t or UNITS <:81 UNITS)

Base UnitsQuantity Unit S"mbD/,.

LeDltb metre mMast kilolram kgTime lecond •Electdc current ampere AThermodynamic kelrin K

temperatureLuminous intensity candela cdAmount of substance mole mol

Supplementar}' Unit.

QUlInti" Unit Symbol

Plane anglt' radian radSolid angle 8tcradian sr

Derived Units

QUDnlit, Un I. Symbol Definltloll

force newton N I N - 1 kg.m/~'Energy Joule J I J - 1 N.lnPower watt W I W ... J J'~Flux weber Wb I Wb .. 1 V.!Flux density tesla T I T - 1 \\b/m'Frequency hf'rtz Hz J lJZ aD 1 cl'!l. ( S,.,1 )Electric conductance !demen~ S J S - J A/VElectromotive force volt V 1 V .. t W/APreuure ~ stress pascal Pa I Pa - 1 N/ml

BOMBAY 400007CALeUITA 700072MADRAS 600113S.A.S. NAGAR(MOHALl) 16tlOSJ

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