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इंटरनेट मानक 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. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 13864 (1993): Wheat - Determination of sedimentation index - Zeleny test [FAD 16: Foodgrains, Starches and Ready to Eat Foods] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS13864:1993 ISO6529 :1992 ~ - amrr~ ~~ ~ ~ IDa Cfiffi - Indian Standard WHEAT - DETERMINATION OF SEDIMENTATION INDEX - ZELENY TEST UDC 633"11:543·86 @BIS1993 BUREAU OF INDIAN STANDARDS MANAK BHAVAN 9 BAHADUR SHAH ZAFAR MARG NEWDELHI 110002 Decembsf 1993 PriceGroup2 AMENDMENT NO. 1 SEPTEMBER 1995 TO IS 13864: 1993 WHEAT- DETERMINATIONOF SEDIMENTATION INDEX- ZELENYTEST ( National Foreword, under 'CROSSREFERENCES' ) - Substitute 'IS4333(Part2):1977'for 'IS4333(Part2):1967'. (FAD16) ReprographyUnit.B15.NewDeihl,Ind,. Foodgrainsand Foodgraln IndustriesSectional Committee, FAD 16 NATIONAL FOREWORD This Indian Standard which IS Identical with ISO5529 '1992 'Wheat- Determination of sedimentation Index- Zeleny test' Issued by the International Organizationfor Standardization ( ISO) was adopted bythe Bureau of IndianStandardsontherecommendation of the Foodqrarns and Foodqram Industries Sectional Committee (FAD 16), and approval of the Food and Agriculture DIVISionCouncil. In t"e adopted standard certain terminology and conventions are notIdentical With those used Inthe Indian Standards, attention ISdrawn spscrallvto the followrnp, a) Wherever the words 'International Standard' appear referring to this standard, they should beread as'Indian Standard' b) Comma ( , ) hasbeen used asa decimal marker while In IndianStandard. the current practice ISto useapoint ( . ) asadecimal marker CROSS REFERENCI:S In this adopted standard, referenceappears to certain International Standardsfor which Indian Standardsalso exist Thecorresponding Indian Standardswhich are to be substituted In their place orelisted below along WIththeir degree of equivalenceforthe editions indicated: tntemsttonslStandard lndtsn Standard Degreeof Correspondence ISO565.1990 IS 460 1985 Specrticatron for test sieves: Technically Part1Wiredothtes, Sieves,Part2Perforated equivalent platetest sieves ISO 648.1977 IS 1117'1975 One mark pipettes (fIrst Technically reviston v equivalent ISO 712 .1985 IS4333 (Part2 ):1967 Method of analysts Technically for Ioodqrams Part 2 MOisture equivalent Thetechnical committee responsible for the preparation of this standard hasfurther reviewed the provisions of 'ISO 2171 1980 Cereals. pulses and derived products- Determination of ash' and hasdecided thatIt ISSUitablefor useInconjunction With this standard. In reporting the results of atest or analystsmade In accordance With this standard. If the final value, obseryed or calculated ISto be rounded off, It shall be done In accordanceWith IS2 1960 Rulesfor rounding offnumerical values (revtsed)'. IS13884:1113 ISO6629:1892 Indian Standard WHEAT - DETERMINATION OF SEDIMENTATION INDEX - ZELENY TEST 1 Scope \amedll00efs\}et.\fled1:00dl\\Or.sIf00) aS\lSpenSlOll oftestflour preparedfromthewheat inalactic acid solution This lnternatronal Standard specifies a method known as the Zeleny sedimentation tesl for as sessrnq one of the factors delerrmrunq the quality of wheat with regard 10the bakmq strength of the 4 Principle flour which can hemade from It Suspensionof atest flour prepared fromthe wheat The method IS applicable only to Tttttcum aesllvu'/l under specrflad gnndlllg and sievmq condrtions III wheal a lactrc acid sotunon In the presence of bromo phenol blue After specified shaklllg andrest times determmauon ofthe volume ofthedeposit resultmq 2 Normative references from the sedimentationofthe flour particles The followlllg standards contain piovrsions which through reference III thrs text constitute provisions 5 Reagents of thrs Intelnational Standard At the limp of publi cation the editions mdicated were valid All stan Use only reagenls of recognized analytical grade dards are subject to revision and parties to unless otherwise specrhed agreements based on thrs International Standard are encouraged to mvesuqate the posvrbrhty of ap Use distilled water or water of at least equivalent plying Ihe most Iecent editionsof the standards III purrty contarrunq less than 2mglkgof rnmeral mal drcated below MembE'rs of lEe and ISO marntam ter registers ofcurrentlyvalid Internallonal Standards ISO5651990 Test sieves - Metal wire cloth per 51 Sedimentationtestreagent foratedmetslplateenaeleclroformedsheet Nom mal sizes of opellmg~ 511 Lacticacidsolution ISO6481977 Laboratory glasswale - One mark Prepare a concentrated 85% (V}/") lactic acid sol ptpette» ution containing not more than 40mglkg ormmr-ral mailer ISO7121q8~ Cereals alld ceteet products Detpr mmat/on of moisture content (Rouun» reference Drlule 250ml orthis concentrated solution to 1litre with water Boll the dilute solution under reflux for method) 6h(seenole 1) ISO21711980 Cereals pulses Rnddenvedproducts Titrate an aliquot portion of thrs solution wrth pot - Determmatlollofash assium hydroxide solullon(for5mlofthelacucacid solulron about 28ml of05molll potassium hydrox 3 Definition Ide sotunon IS necessary) Theconcentration round shall bebetween 27molII and28molll For the purposes of this International Standard the NOTE1 Concenlrated lacllc acid contains associated following definltronapplies moleculeswhich ondilution drssocrateslowly10acertam equuionum BOIling accelerales lh,s dissolutron process 31 sedimentationIndex Thenumberrndicatmg the WhlLh IS essential In order 10 obtain reproducrbte volume expressed in rrullrlnres ofthe sedunentob sedirnentauonvalues IS13884 :1993 ISO6629:1992 512 Preparation01testreagent 7 sampling Thoroughly mix 180ml of the diluted laclrc acid sol uuon (51) with 200ml of between 99 % (VIV)and II ISImportant that thp laboratory rpcelVp a sample 100 % (VIV) propan 201 contammq not malethan which IS truly representalive and has not been damagedor changed dunngtransport or storaqe 40 mg/kg of minerai matter and make up to 1000 ml with waler Sampling I~ not part or IhE'method specrfied In trus Keep In a stoppered flask and do not use the re Inlernahonal Siandard A recommended sampling agentuntil Ithas ber-n left to stand for 48h method ISgiven In ISO950'1 52 Bromophenolblue solution 8 Procedure Dissolve 4mg or bromophenol blue In 1000 ml or water 81 Moisturecontent ofthegrain 6 Apparatus Ifthe moisture content of the grain ISunknown de usuat laboratory apparatus and In paitrcular the terrnine It In ar.cordance WiththE'practical method rollowlng SPE'('Iflpd In ISO712 If the rnorstuie content delerrruned ISnot between 61 Test mill or an appropnate typpll (see 145% (mlm) and 15% (mlm) reduce IIor mcrnase annex A) Itsothat IIhasbetweenIhesp11mlis eitherbydryll1g the grall1 at laboratory temperature or by placinq II 62 Woven melal wire sieve" In accordance with In an atmosphere Withahrqh relative humidity the spectncahons of ISO565 haVing a'nominal ap erturc size or 15011m 200mm In diameter moved by an appropriate automatic vibration device or ec 82 Ash content ofthe test flour centncrty 50mm and rotalional frequency 200 min 1 Deterrnme the ash content 01the test nour by the mcmoratron method at 900'C specined 111 ISO2171 63 Perforated metal plate sieve with slots 1mm ThE' ash content shall not exceed 06 % 01the dry wide mattercontent 01the flour IIthis I~ notthe case IIISImpossibletooblamexact 64 Flat-boltom cylinders of 100 ml capacity resultsfor Ihe ~E'dlmen'atlon Index graduated In rrulhhtres with adistanceof lAOmm 10 185mm betwpE'n the bottom and the 100 ml mark and equipped with ptastrcor glass stoppers 83 Preparationofthetest flour 65 Cylinder shaker flttE'dwith a lime SWitch and Take a sample01100g 1,0gor 200g01the grall1 providing ashaking f1equency of40min 1 each <:y accordinq to thp typE'01mill (61)used lor gnndmg cle shall be through 60' (30' above and below the (see annex A) honzontal) Separate all rrnpunties from the gram removrnqthe coarsest particles by hand and smaller particles by 66 One-markpipettes or25ml and 50ml capacity meansofthe perto:aled metal plate sieve (63) contormmg to ISO648 or automatic dispensers emplylng In 10s to 15s Grind the gram and sieve the ground product as described In annex A 67 Stop-clock Aller SleVII1Q thoroughly mix all the test nour ob tamed Ihe mass ofwhich shall be at least 10% 01 68 Balance accurateto 001 g the massofthe sample taken for grtndmg 1) Atpresent thelollowlngflvetypesormillareSUitable MlagGrobschrotrnuhle BrabenderSednnal StrandRoll model SRM Siraube modelWI TagHeppenstall ThrsInlormalton ISgiven for theconvenience ofusers01thrs International StandardanddoesnotconstrtuteanendorsementbyISO01theapparatusnamed Equivalent apparatusmaybeusedlIlt canbeshowntoleadtothesameresults 2) InlhecaseoftheBrabenderSedlmatmill theslevmgdevice ISbuiltintotheappliance(seeA3) 3) ISO9501979Cereals - Samplmg(asgram) 2 IS13884:1993 ISO 5529:1992 84 Test portion Ferencedoes not exceed 2umts II their difference does exceed 2units discard the results 01the Iwo Weigh \0 the nearest 005g 32 g of the tl'sl flour determinations and repeat the operations given In (83) 84and 85 NOTE2 IIthere Isanyreason \0think that themorsture Report the result asawhol..number conlenlof the test flour ISoutside therange 1300 (mm) 10 15%(m m) determine ItSvalue In accordance with 10 Precision ISO712 Ihen weigh a quantrty of Ihe 11'.1flour carre spcndmq 10320g±005g at 14% (mm)morvturecon tent (Ie 275g-t004gofdry mailer) 101 Repeatability 85 Determination The absolute difference between two Independenl Singletesl results obtained using the same method 851 Carry out Ihe sedunontauon procedurI' on Identical test matenal Inthe same laboratory by specnled In 852 to 856 twice on separate test the same operatorusmqthesame equipmentWithin portions taken from the same testflour (83) a short Interval 01time should not be greater lhan 2units 852ThI'operations specified In853to 856shall becarried out undernormal lighting conditions out 102 Reproducibility ofdirectsunlight The absolute difference between two Single lesl re The tunelaken to poureach rl'agent Into the cynn suits obtained uSing the same method cn Identical der (see 853and 854)shall notexceed 15s test material In different laboratories With different operators USingdifferent equipment should not be 853 Place Ihe test portion (84) In a qraduated greaterthan cylinder(64) 2 (absolule value) for a sedimentation Index of Add 50ml of Ihe bromophenol blue solution (52) to less than 20 the test portror Close the cylinder With a stopper and holding the cylinder In a horizontal positron 10% (reialive value) of lhe mean value for a shake It left and right through approximately sedimentation Index ofgreaterthan 20 18em 12timesIneach directionoverapproximately 5s 11 Testreport 854 Place the cylmder In the shaker (65) and Thetest report shall speclly start the stop dock (67, and the shaker After 5min remove the cylinderIrornthe shakerandadd the method In accordance Withwhich sampling to Its contents 25ml of the sedimentanon test re was earnedoul (IIknown) agent (51) Replace thO' cylinderand contmue the shaking the type ofmill used 855 Afteratotal time of 10min removethe cvnn the method used der FromIhl' shaker and place ItIn an upnqht pos rtron the test Iesult(s) obtained and If fhe repeatabrhty has been checked the final 856 Leave lhe contentsoftile cylmder tostandFor quoted resultobtained exactly 5min and then noll' the volume of the de POSitto the nearest05ml It shall also mention all operating details not speer fied In this Inlernalional Standard or regarded as 9 Expression ofresults optional togetherwuh detailsofanymordentswhich may nave Influencedthe result The number indicating the volume expressed In The tesl report shall Include all information mtlhhtres of the deposit noted III accordance With necessary for the complete Identification 01 the 856 represents Ihe sedunentanon mdex sample Take asIhe resultthe anthrnetrcmean ofthe resulls oftwodeterminations (851) providedIhattheirdll 3 IS13884 :1113 ISO6621:1182 Annex A (normative) Grinding and sieving ofthesample A.1 General A.4 Tag-Heppens'a" mill The sample speclned In A210A6 as approprlale, Sample 200 g freed from Impurities, shall be ground under Ihe condilions specified below according 10the type of - Carry oul a first grinding With the rolls 0,6mm mill used apart and at a rotatronal frequency of about 30min I A.2 Mlag-Grobschro'mOhl.mill Regrind all the material obtained from the first grinding with the same gap between Ihe rolls, Sample 100g then repeat this regnndlng proredure a further threetimes Carry out a first grinding with the rolls 1rnrn apart and at a rotalional frequenry of about 30min I USlI1g a sieve (62) haVing a nominal aperture size of 15011m sieve Ihe productofIhe five sue ceSSiVE' gllndlngsfor t 5min Regrind all the material obtatneq from Ihe first grinding, but With the rolls 0,1 rnrn apart, then repeat thrsregrinding procedure a further three A.S Strand-Roll mill, model SRM tunes Sample 150g Using a sieve (62) haVing a nominal aperture size of 150urn,sieve the product of these three Carry out a firsl grinding With the rolls 0,8rnm successive grlndlng~for5min apart and al a rotationat frequency of about 30min 1 A.3 Brabender-Sedlma' mill Regrind all the material obtained from the firsl grinding wuh the same gap between Ihe rolls, Sample 100g then repeal this regrinding procedure a lurther Ihreetimes Setthe timing deviceofthe mill at3min U<;lng a sieve (62) havmq a norrunal aperture - Carry out the grinding With a gap of 1rnm be sizeof 15011m,sieve the productof the five suc tween thefeedlollandthe first grinding roll and cessive grindingsfor 15min agap of about 05mrn between the other grind Ing rolls at a rotational frequency of about 1000min 1 A.6 Straube mill, model W.1 NOTES Sample 150g 3 On Ihe Brabender-Sedlmat mill, the roll gaps and Proceed as In A5, carrying out thE'fiVE' gnndlngs speedarenol adjustableThesedetailsaregiven10en WithIhe rolls 1,10rnmapart and at arotalional fre sureIhattherollsarenotbadlywornandIhalthemotor runsatthecorrectspeed quency of60min 1 4 Theproducts01themllhngpassdirectlyIntotheSiller A.7 Cleaning ofapparatus II Ihe mass of Ihe ground product IS less Ihan Between successivegrlndmg andSII'VInQoperahons 10g continue Sieving untrl Ihal quantity ISob wllh differentsamples ofwheat thenuusandsieves tained shall besurtably cleaned 4 ReprogrnphyUnit,BIS,NewDeihl,India