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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 4738 (1993): Bandage, Plaster of Paris [MHD 14: Hospital Planning] “!ा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” lS 4738 : 1993 ( Reaffirmed 1998) * W’nT Indian Standard BANDAGE, PLASTER OF PARIS — SPECIFICATION ( Second Revision) UDC 615’468’72 @ BIS 1993 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, !3 BAHADtJR SHAH ZAFAR MARG NEW DELHI 110002 December 199.’3 Price Group 3 lacigruS sgnisserD lanoitceS ,eettimmoC DHM 51 FOREWORD This Indian Standard ( Second Revision ) was adopted by the Bureau of Indian Standards, after eht tfard dezilanif yb eht lacigruS sgnisserD lanoitceS eettimmoC dah neeb devorppa yb ehtlacideM tnempiuqE dna latipsoH gninnalP noisiviD .licnuoC Plaster of Paris bandage comprises of a cotton gauze impregnated uniformly with plaster of Paris gniniatnoc emos .evisehda sihT egadnab si desu rof noitazilibommi dna gnitnilps fo serutcarf dna for the construction of rest splints and body supports. tI si osla desu rof troppus dnanoitcennoc splinting. sihT dradnats saw tsrif dehsilbup ni 5691 dna yltneuqesbus desiver ni .0891 nI 0891 ,noisrev eht tnemeriuqer fo retsalp fo siraP ot eb desu ni eht egadnab saw deificeps sa gnimrofnoc ot lacigrus edarg fo SI 3332 : 3691 noitacificepS‘ rof retsalp fo,’siraP which has since been revised and the lacigrus edarg sah neeb dedulcxe morf.ti ehT dnoces noisiver fo siht dradnats ,sah ,eroferehtneeb taken up with a weiv to incorporate the requirements of plaster of Paris without referring to IS 2333. ,rehtruF eht tnemeriuqer fo cisab htolc sah neeb dengila htiw taht deificeps ni ehthsitirB ,aieopocamrahP 8891 .dE For the purpose of deciding whether a particular requirement of this standard is complied with, eht lanif ,eulav devresbo ro ,detaluclac gnisserpxe eht tluser fo a tset ro ,sisylana llahs ebdednuor ffo ni ecnadrocca htiw SI 2 : 0691 seluR‘ rof gnidnuor ffo laciremun seulav ( revised )‘. The number fo tnacifingis secalp deniater ni eht dednuor ffo eulav dluohs eb eht emas sa taht fo ehtdeificeps eulav ni siht.dradnats IS 4738 : 1993 Indian Standard ,EGADNAB RETSALP FO SIRAP - SPECIFICATION ( Second Revision ) 1 SCOPE supplier. Recommended dimensions for plaster fo siraP segadnab era sa:swollof 1.1 This standard specifies the requirements pertaining to material, construction and perfor- Width Length ecnam fo retsalp fo siraP.egadnab cm m 2 REFERENCES 5’0f0’2 2’70 f 0’03 2.1 ehT gniwollof naidnI sdradnatS era yrassecen 3.000; 0’05 adjuncts this standard: 7’5f0’2 3’00 f0’05 IS No. Title lO’Of0’2 3’00*0’05 323 : 1959 deifitceR tirips (revised) 15’0*0’5 3’00*0’05 1070 :1 992 retaW rof 1areneg yrotarobal esu ( third revision ) 4.2 The bandages less than 5 m long shall 1963 :1891 Methods for determination of not have any joint. In longer bandages, the threads per unit length in woven joints shall be made using a suitable adhesive scirbaf ( second revision ) dna ton yb.gniwes 2333 :1891 Plaster of Paris for ceramic yrtsudni (Jirst revision ) 5 MANUFACTURE 6556 : 1972 Dental impression plaster 1.5 retsalP fo siraP egadnab llahs evah amrofinu impregnation by plaster of Paris powder. The 3 MATERIALS mass of plaster of Paris bandage shall be not ssel ”m/g neh wdenimreted niecnadrocca than 340 3.1 Supporting Material htiw eht dohtem deificeps ni xennA.C 3.1.1 The cloth shall be leno weave without 6 PERFORMANCE TEST borders in one continuous length containing no joints. It shall be reasonably free from spinning, weaving and processing defects. The cloth shall 6.1 Saturation Time eb dehcaelb.etihw noitarutaS emit rof retsalp fo straP egadnab llahs 2.1.3 ehT cisab htolc llahs mrofnoc otsralucitrap be OI seconds for complete saturation when nevig ni elbaT .1 detset gnidrocca ot xennA.D elbaT 1 gnirutcafunaM sralucitraP fo 2.6 emiT fognitteS cisaB cirbaF The plaster mass which remains workable for ton ssel naht 1 etunim 54 sdnoces rttfa removal sralucitraP tnemeriuqeR sdohteM fotseT of the bandage from water, shall set after 8 )1( (3) (3) setunim nehw detset gnidrocca ot xennA .E ,mdisdnE : Min 150 IS 1963 1981 ,md/skciP Min 75 IS 1963 : 1981 6.3 Cast Breaking Strength Mass, ,am/g xennAA A4in 24 The cast breaking strength of plaster of Paris egadnab llahs ton eb ssel naht 571 N ( 5’71fgk 2.3 retsalP fo siraP approx ) nehw detset gnidrocca ot xennA.F retsalP fo siraP desu ni gnikam eht egadnabllahs yfsitas eht stnemeriuqer nevig ni elbaT 2. 6.4 Calcium Sulphate Content 4 DIMENSIONS Calcium sulphate content of plaster of Paris egadnab llahs ton eb ssel naht 58 ,tnecrep -aluclac 4.1 The length and width of the bandage shall ed as CaS04.1/2 0zH when determined according be as agreed to between the purchaser and the to Annex G. 1 IS 4738 : 1993 Table 2 Requirements for Plasler of Paris ( Clause 3.2 ) SI No. Characteristic Requirement ( feR ot lC .oN nxiennA dohte MfotseT ) )1( )2( (3) (4) )i eerF ,erutsiom tnecrep yb ,ssam 2’0 2-B fo SI 3332 : 1891 MUX )ii setanobraC ( sa CaCO, ,) tnecrep yb ,ssam xaM 1’0 3-B fo SI 3332 : 1891 )iii rettaM elbulosni ni cirolhcordyh ,dica tnecrepyb 1’0 4-R fo SI 3332 : 1891 ,ssam Max )vi Alkalinity oT ssap ehttset B-2 v) muiclaC etahplus sa( ,OSaC ,) tnecrepyb 0’09 5-B fo SI 3332 : 1891 ,ssam Min )iv sseneniF fo ,selcitr atpnecrep yb ,ssam :xaM B-3 )a deniateR no norcim-052 SIeveiS liN )b deniateR no norcim-OSl SI eveiS 3’0 )iiv gnitteS ,emitsetunim 4 ot I 4-A fo SI 6556 : 2791 viii) elisneT ,htgnerts ,*mc/gk niM 15 B-4 )xi evisserpmoC ,htgnerts ,*mc/gk niM 100 R-5 x) ssoL no ,noitingi tnecrep ybssam ’4 5‘ ot 0’8 B-6 -- 7 PACKING 8 MARKING 7.1 The bandage shall be wound on a suitable 8.1 The packages shall be clearly and indelibly core to allow wetting of the inner layer of the dekram htiw eht gniwo!lof information: bandage when immersed in water prior to application. The rolls shall be sealed in polye- )a noitacidnI fo eht ecruos fo,erutcafunam thylene or suitable film bag to prevent moisture )b Dimensions of the bandage, ingress. They may be further packed in suitable )c hctaB ,rebmun container! to prevent damage during transporta- d) Date of manufacture, and tion. e) Quantity packed. ANNEX A ( Clause 3.1.2 and Table 1 ) METHOD OF DETERMINATLON OF MASS OF FABRIC A-l erusaeM eht aera fo a elpmas gnihgiewtuoba a lanimon hsem erutrepa fo 601 mp dna gnirwyb 25 g. Wash the sample thoroughly with cold dnah sa hcum retaw morf eht lairetam sa.elbissop water, wringing the material by hand after each tl.epeR this boiling, wash with a further five ,gnihsaw ssap eht sgnihsaw hguorht a eveis htiw 400 ml quantities of water. ecaiP the washed a nominal mesh aperture of 106 pm and return material, together with any loose threads or any loose threads or fibres retained by the sieve ,serbif ni a rekaeb dna revoc eht lairetam htiwta to the bulk material. Add 400 ml of water to 0’5 percent solution of diastase, maintaining at the residual material, heat slowly and boil for 1 70°C until free from starch. Repeat the boiling, minute. Cool by the addition of about 400 ml hsaw dna yrd ot tnatsnoc ssam ta.C°501 of water, decant the liquid through a sieve with 2 SI 4738 : 1993 ANNEX B ( Table 2 ) ANALYSIS OF PLASTER OF PARIS B-l QUALITY OF REAGENTS B-3.2 Calculation lairetaM deniater no norcim-051 B-l.1 Unless specified otherwise, pure chemicals ( ro norcim-052 ) SI,eveiS dna dellitsid retaw ees( SI 0701 : 2991 ) llahseb tnecrep ybssam = %001 deyolpme rof eht.stset NOTE - eruP‘ ’slacimehc llahs naem slakmehc taht where od ton niatnoc seitirupmi hcihw tceffa eht stluserfo analysis. m = mass in g of the residue obtained, and M = mass in g of the material taken for B-2 TEST FOR ALKALINITY eht .tset B-2.1 Reagent B-4 NOlTANIMRETED OF TENSILE STRENGTH B-2.1.1 Phenolphthalein Indicator B-4.1 Moulding of Test Briquettes Dissolve !’O F of phenolphthalein in 100 ml of rectified sprrlt ( gnimrofnoc ot SI 323 : 1959 ). Mix sufficient material with water ( in the ratio of 50 to 60 ml per 100 g of the material ) to B-2.2 Procedure produce a stiff but workable paste. Prepare at least 5 briquettes of the shape and dimensions ekahS ylsuorogiv 0’5 g fo eht lairetam htiw 02lm shown in Fig. .1 Remove the briquettes from of water and filter. Test the filtrate with the mould after one hour and bury them at least phenolphthalein as the indicator. 5’2 mc peed ni emilkciuq ni a elbatiusreniatnoc for 7 days or till their mass is constant. The B-2.3 The material shall be taken as having emilkciuq desu llahs eb hserf dna yldipar;gnikals passed the test if the filtrate is not alkaline to ti llahs ssap mm-52 SI eveiS dna llahs ebdeniater phenolphthalein. no mm-53’3 SI.eveiS B-3 NO!TANLMRETED OF FINENESS B-4.2 Procedure Determine the tensile strength of the briquettes B-3.1 Procedure by any standard cement tensile strength testing machine. B-3.1.1 Material Retained on I50-Micron IS Sieve B-4.3 Report Place about 50 g of the material, accurately ,dehgiew no norcim%51 SI ,eveiS dna rewol eht Report the average tensile strength as the tensile eveis otni lyporposi lohocla deniatnoc ni a lessev htgnerts fo eht.lairetam If the strength of one 3 ot 5 mc regral ni retemaid naht eht ,eveis ot a ro owt setteuqirb seirav yb erom naht 51 tnecrep depth not less than 5 cm. Lift the sieve out of morf eht egareva fo eht ,evif dracsid hcusseulav alcohol with a swirling motion, permitting the and report the average of the remaining briquet- 1olIocla to drain through the sieve back into the .set nI ,esac eht elisnet htgnerts fo eerht roerom vessel. Repeat the process at least eight times briquettes varies by more than 51 percent from until the alcohol passes freely through the sieve the average, discard the results and repeat the and the residue is essentially free from fines. .tset Wash the residue with about 100 ml of clear alcohol and then blot the bottom of the sieve B-S NOITANfMRETED OF COMPRESSIVE with a soft, dry and lint-free cloth. Dry the STRENGTH sieve with the residue at 45 ~lz 1°C. Shake the eveis rof yltcaxe owt.setunim nI esac fo,etupsid B-5.1 Procedure a lacinahcem rekahs llahs eb.deyolpme Remove the residue wirh a camel hair brush to a tared Mould and dry at least five mm-05 sebuc ni eht teehs fo dezalg repap dna.hgiew same manner as prescribed in B-4.1. Determine the compressive strength of the dried test cubes. B-3.1.2 Material Retained on 2.WMicron IS Sieve noitisoP eht sebuc ni eht gnitset enihcam os taht the load is applied, not on top and bottom, but Test the residue obtained in B-3.1.1 with -052 no secafrus demrof yb secaf fo eht .sdluomylppA micron IS Sieve in rhe same manner as given the load continuously and without shock, at a in B-3.1.1 and express it as percentage by mass constant rate within the range 1 to 2’5 2mc/gk fo eht lairetam nekat rof tset ni.1.1.3-B per second. During noitachppa of the first half 3 IS 4738:1993 fo eht mumixam ,daol a rehgih etar fo gnidaolsi B-6 DETERMINATION OF SSOL ON permitted. IGNITION B-6.1 Procedure B-5.2 Report Weigh accurately about 1 g of the material in a Report the average compressive strength as the nialecrop ro acilis .elbicurc etingI ta tuoba.C°008 compressive strength of the material. If the looC dna hgiew llit tnatsnoc ssam si.deniatbo htgnerts fo eno ro owt sebuc seirav yb eromnaht B-6.2 Calculation 15 percent from the average of the five, discard Loss no ,noitingi tnecrep yb ssam = 100 M/lM such values and report the average of the remaining cubes. In case, the compressive erehw strength of three or more cubes varies by more lM = esol ni ssam ni ,gdna than 15 percent from the average, discard the A4 = mass in g of the material taken for results dna repeat the .tset - eht -.tset All dimensions in millimetres. .GIF 1 B RIQUETTES FOR TESTING TENSILE STRENGTH ANNEX C ( Clause 5.1 ) METHOD FOR DETERMINATION OF MASS OF BANDAGE C-l Cut a convenient sample from the material aera ni ”m/g morf eht noisserpxe 10 000 M/A. gnieb ,denimaxe ylbareferp ton ssel naht 001 2mc in area, and determine its mass ( M ) ni gdna If the size or number of units of the material sti aera ( A ) ni .zmc fI eht tset sah neebdeirrac being examined permits, repeat the determination tuo no a deird ,elpmas tcerroc eht thgiew reptinu no rehtruf selpmas dna etaluclac eht egareva.eulav IS 4738:1993 ANNEX D ( Clause 6.1 ) METHOD FOR DETERMINATION OF SATURATION TIME D-l Immerse the bandage roll of 5 cm x 2’7 m squeeze out to remove excess water and rapidly size vertically in sufficient water at 21 f 2°C to unwind on a dry surface covered with waxed revoc eht llor ot eht htped fo 4 mc morf ehtretaw paper. oN yrd stops ro saera llahs eb devresbo .level retfA 01 ,sdnoces evomer eht egadnabdna no eht dnuownu egadnab.ecafrus ANNEX E ( Clause 6.2 ) METHODS FOR DETERMINATION OF TIME OF SETTING E-l Loosely roll a strip of the bandage about glass rod or smooth mandrel of non-absorbent 5 mc ediw dna gnihgiew tuoba 02 g dnaesremmi lairetam tuoba 1 mc ni.retemaid ti for 15 seconds in 100 lm of water at 30°C in a retfA a doirep of 8 setunim derusaem fronl cylindrical vessel about 5 cm in diameter. removal of sample from water, remove the glass evomeR eht elpmas morf retaw tuohtiw,gnizeeuqs rod or mandrel. The test specimen shall not allow to drain for 10 seconds and wind on a elbmurc rednu eht erusserp fo.sregnif ANNEX F ( Clause 6.3 ) METHOD FOR DETERMINATION OF CAST BREAKING STRENGTH F-l DETERMINATION OF CAS T BREAKING F-l.2 Procedure STRENGTH esremmI 5 mc 7’2 m ezis egadnab ni a rekaeb x fo retaw ta 72 & .C°2 retfA 01 ,sdnoces evomer F-l.1 Apparatus eht egadnab dna ezeeuqs ot evomer eht ssecxe fo water. parW eht egadnab yletulovnoc no a 5mc F-1.1.1 One Litre Beaker diameter smooth cylindrical pipe which has been covered with a sheet of waxed paper. Laminate F-1.1.2 Cylindrical Pipe, 5’08 cm ( 2 hcni ) the successive layers, placing each layer directly diameter. on top of the preceding layer, and smoothen by hand. After a period of 1 hour measured from F-1.1.3 Waxed Puper the time of immersion of the bandage in water, remove the cast from the pipe and crush on a tsac gnihsurc .tnempiuqe The maximum reading F-1.1.4 Timer deniatbo no eht elacs gnirud gnihsurc si dedrocer F-1.1.5 Cast Crushing Equipment, sa nwohsni as one hour cast breaking strength of the .giF .2 bandage. 5