Table Of Contentइंटरनेट मानक
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“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 2857 (2002): Earthenware Crockeryware [CHD 9:
Ceramicware]
“!ा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””ै”
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“Knowledge is such a treasure which cannot be stolen”
IS 2857:2002
Indian Standard
EARTHENWARE CROCKERYWARE-SPECIFICATION
( Third Revision)
ICS 81,060.20; 97.040.60
0 BIS 2002
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
August 2002 Price Group 3
Ceramicware Sectional Committee, CHD 9
FOREWORD
This Indian Standard (Third Revision) was adopted by the Bureau of Indian Standards, after the draft finalized
by Ceramicware Sectional Committee had been approved by the Chemical Division Council.
This standard was originally published in 1964and subsequently revised in 1976and 1995. Inthis revision, the
limitsforrelease ofleadandcadmium havebeenmodified toalignwiththeISO/DIS 6486-2:1999 ‘Ceramicware,
glass-ceramicware and glass dinnerware in contact with food — Release of lead and cadmium — Part 2:
Permissible limit’, which incorporates present regulatory requirements ofmajor world bodies, inorder toobviate
any non-tariff barriers apart from ensuring protection of the population against possible hazards arising from
the use of improperly formulated and/or processed crockeryware used for preparation, serving and storage of
food and beverages. The various test methods have been given inIS 14179:1999 ‘Methods of test for ceramic
tableware’ and IS 9806: 2001 ‘Methods of test for and permissible limits of toxic materials released from
ceramicware, vitreous enamelware, glassware and glass-ceramicware in contact with food’ (jlrst revision).
The composition of the Committee responsible for formulation of this standard isgiven in Annex B.
For the purpose of deciding whether aparticular requirement of this standard iscomplied with, the final value,
observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with
IS2:1960 ‘Rules forrounding offnumerical values (revise~’. Thenumber ofsignificant places retained inthe
rounded off value should be the same asthat of the specified value inthis standard.
IS 2857:2002
Indian Standard
ERTHENWARE CROCKERYWARE — SPECIFICATION
( Third Revision)
1 SCOPE high porosity, non-translucency, and lessmechanical
strength, biscuited at higher temperature, glazed at
This standard prescribes requirements and methods
relatively lower temperature and covered with a
of sampling and test for earthenware crockeryware.
properly matured fritted glaze. The glaze shall be of
uniform colour,imperviousandasfreeaspossible from
2 REFERENCES
visual defects.
The following Indian Standards contain provisions
which, through reference in this text, constitute 5.2 Workmanship
provision of this standard. At the time of publication,
5.2.0 General
the editions indicated were valid. All standards are
All items of earthenware crockeryware in a set shall
subject to revision, and parties to agreements based
be generally of a matching design, colour and
on this standard are encouraged to investigate the
decoration.
possibility of applying the most recent editions ofthe
standards indicated below: 5.2.1 The cup shall rest in the middle of the saucer
without rocking or spinning.
1SNo. Title
2781:1975 Glossary of terms relating to 5.2.2 The handle, where provided, shall not be
ceramicware (first revision) misplaced.
9806:2001 Methods of test for and permissible
limits of toxic materials released 5.2.3 The liporspout shallbesodesigned that liquids
may nottrickle down from the sidesofthe ware whiIe
from ceramicware, vitreous
pouring.
enamelware, glassware and glass
ceramicware in contact with food 5.2.4 The lid, where used, shall fit properly and shall
~rst revision) not fall down while pouring out liquids.
14179:1999 Methods of test for ceramic
5.2.5 The capacity of the tea potfcoffee pot in a set
tableware
shall correspond to the capacity of the cups.
3 TERMINOLOGY
3.1 For the purpose of this standard, the definitions 5.3 Finish
given in IS 2781, in addition to the following, shall The entire surface of items of earthenware
apply. crockeryware shall be covered by a smooth uniform,
3.1.1 Earthenware — A glazed non-vitreous continuous, impervious and fritted glaze except for
ceramicware. the resting surface (bottom rim) of the hollow ware
which iscleanable andretains thisquality. Inaddition,
3.1.2 Crockeryware — It shall mean all types of the resting surface of items other than hollow ware
dinnerware, tableware, etc (other than artware) made
shall be non-abrasive in texture.
from earthenware, stoneware, fine (bone) china,
porcelain, vitreous china and glass-ceramics. 5.3.1 The glazed surface shall be even, free from
defects,namely, craze,speck,crawling, patches, finger
4 GRADES prints and pin holes and shall comply with the
requirements of visual assessment as prescribed in
4.1 There shall be three grades of earthenware
Annex A.
crockeryware, namely, Grade 1,Grade2andGrade 3,
depending upon their visual assessment ratings 5.3.1.1 The pinhole shall be determined by applying
(see Annex A). a dye-based fountain pen ink on the surface of the
article under test. Allow it to dry. Wipe out the ink
4.2 The material of all the grades shall also satisfy
from the article with awet cloth and observe the spot
the requirements prescribed in 5.
wherever ink stain has remained.
5 REQUIREMENTS .
5.4 Warpage
5.1 Material
5.4.1 Out-of-roundness
Itshall be aceramic material, white/coloured, having Theout-of-roundness ofvarious items ofearthenware
1
IS 2857:2002
crockeryware of Grade 1,Grade 2 and Grade 3 shall in accordance with the m~hod prescribed in 13 of
not exceed the following limits on the nominal IS 14179.
diameter when measured in accordance with the
method prescribed in 7.1 of IS 14179. 5.7 Water Absorption
The water absorption of the items of the earthenware
Grade Limit, percent
crockeryware when tested in accordance with the
1 0.8 method prescribed in10 ofIS 14179shallbelessthan
2 1.0 8percent.
3 1.2
5.8 Impact Strength and Chipping Resistance
5.4.2 Edge-warpage and Slope of Flatware
The impact strength and chipping resistance of the
The edge-warpage and slope ofthe flatware ofGrade
variousitemsofearthenware crockeryware whentested
1,Grade 2,andGrade 3shallnotexceedthe following
in accordance with the method prescribed in 9 of
limits when measured in accordance with the method
IS 14179shall be asprescribed below:
prescribed in 7.2 of IS 14179.
Item of Crockeryware Impact Chipping
Grade Warpage Slope
Strength, Resistance,
(mm)
A4in Min
1 1.5 3° F/m Nm
2 2.0 3° Cup, mug, sugar pot, 0.20 —
3 2.5 3“
milk pot, tea pot,
coffee pot andbowl.
5.4.3 Flatness of Dinner Plate
Flatware 0.22 0.20
The eating surface of the dinner plate shall be flat
within 2 mm total indicator run-out when measured 5.9 Resistance to Detergents
in accordance with the method prescribed in 7.3 of
When tested by the method prescribed in 11 of
IS 14179.
IS 14179, the test article shall not show any loss of
gloss of the glaze when compared with the untested
5.5Release of Lead and Cadmium (Toxic Elements)
test specimen.
The limits of release of lead (Pb) and cadmium (Cd)
extracted from earthenware crockeryware shall not 5.10 Resistance to Citric Acid
exceed the following limits when tested asprescribed
When tested by the method prescribed in 12 of
in IS 9806.
IS 14179, the test article shall not show any loss of
gloss of the glaze when compared with the untested
Type of Ware Minimum Unit Lead Cadmium
test specimen.
Number of Limit Limit
Specimen 5.11 Crazing Resistance
Flatware 4 mg/dm2 0.8 0.07
When tested in accordance with 8 of IS 14179, the
Large 4 mg/1 1.0 0.25
articlesofthecrockeryware shallshownocrazing after
hollow ware
undergoing three cycles.
Small 4 mg/1 2.0 0.50
hollow ware 6 MARKING AND PACKING
Cups and mugs 4 mg/1 0.5 0.25
Storage 4 mg/1 0.5 0.25 6.1 Marking
hollow ware
Each item of earthenware crockeryware shall be
Cooking ware 4 mg/1 0.5 0.05
indelibly and legibly marked with its source of
NOTE—Flatware shallconstitute aminimumsourceoflead manufacture.
andcadmiumburdenfromearthenarticles.Limitsforflatware
(leadandcadmium)refertothevalueobtainedwhentheindividual 6.1.1 In addition to the above, each package shall be
values ofthe pieces tested are averaged.All other limits are marked with the following particulars:
expressedinabsolutemaximumvalues,inthat,noindividualunit
comprisingasampleexceedstheselevels. a) Indication ofthe source of manufacture;
b) Description of the items;
5.6 Thermal Shock Resistance
c) Quantity;
Allitemsofearthenware crockeryware shallwithstand
d) Batch number and lot number;
athermal shock of 120”Cforthree cycleswhen tested
2
IS 2857:2002
e) Grade and type; use of the Standard Mark may be granted to
f) Decoration quality number, ifany; and manufacturers orproducers maybe obtained from the
Bureau of Indian Standards.
g) Month and year of manufacture.
6.1.2 BIS Cert@cation Marking 6.2 Packing
The packages may also be marked with the Standard Thecrockeryware shallbepacked asagreedtobetween
Mark. the purchaser and the supplier.
6.1.2.1 The use of the Standard Mark isgoverned by’ 7 SAMPLING
the provision ofBureau of Indian Standard Act, 1986
Representative samples ofthe earthenware crockery-
and the Rules and Regulations made thereunder, The
ware shallbedrawn inaccordance with 4of IS 141?9.
details of conditions under which the licence for the
ANNEX A
(Clauses4.1 and5.3.1)
VISUAL ASSESSMENT FOR GRADING OF EARTHENWARE CROCKERYWARE
A-OGENERAL characteristics as described in Table 1 shall be
classified asGrade 1.
Visual assessment for grading of earthenware
crockeryware isdoneonthebasisofthenature,number A-1.2 Any item of the earthenware crockeryware
and distribution of the defects in th e final ware in having not more than 6 defects out of first thirteen
respect of its appearance, finish and decoration as characteristics as described in Table 1 shall be
given inTable 1. classified as Grade 2.
A-1.3 Any item of the earthenware crockeryware
A-1 ASSESSMENT AND GRADING
having not more than 10defects out of first thirteen
A-1. 1 Any item of the earthenware crockeryware characteristics as described in Table 1 shall be
having not more than 4 defects out of first thirteen
classified asGrade 3.
IS 2857:2002
Table 1Classification of Defects Earthenware Crockeryware
(Clasuses A-O,A-1.1, A-1,2 and A-1.3)
sl Characteristic Grade1 Grade2 Grade3
No.
(1) (2) (3) (4) (5)
O Pinholes
a)Body 2upto0.8mm 3upto0.8mm 4uptol.Omm
b)Glaze’) 10upto l.Omm 15uptol.Omm 200pto l.Omm
ii) Grog
a)Surface Nil 1upto0.8mm 3uptol.Omm
b)Bottom 2upto0.8mm 4upto l.Omm 6uptol.Omm
iii) Ironspecksandcolourspecks
ong[aze/body
a)Whiteglaze luptol.Omm 2uptol.Omm 4uptol.5mm
b)Colourglaze 3uptol.Omm 4uptol.5mm 6upto1.5mm
iv) Clayparticles
a)Surface 1upto2.0mm 3upto2.0mm 4upto3,0mm
b)Handle 4upto l.Omm 6uptol.Omm 8upto l.Omm
v) Cracks,lengthwise
a)Surface Nil Nil 2upto2.0mm
b)Bottom 1up to 0.8mm (thickness 10 2upto 1.0mm(thickness 15 3 upto2.0 mm(thickness 20
percentofthethicknessofthe percentofthethicknessofthe percentofthethicknessnf(IIC
item) item) item)
c)Handle Nil 10 percent of the total area 20 percent of the total arm
between body and handle between body and handle
joining portion and up to joining portion and up to
1mmdepth. 1mmdepth.
vi) Handlereplacement 5percentasperdesign 10percentasperdesign 20percentasperdesign
vii) Chips
a)Rim Nil Nil 2upto0.8mm
b)Bottom 1upto0.8mm 2upto0.8mm 3uptol.Omm
viii) Unevenglaze
a)White Nil Nil 5percent
b)Colour 10percent 15percent 20pereent
ix) Glazecut
a)Surface Nil 1upto2.0mm 3upto3.Omm
b)Bottom 1upto3.0mm 2upto3.0mm 4upto3.Omm
Offglaze
x)
a)Rim 1upto0.5mm 2upto0.5mm 3upto0.5mm
b)Surface 2upto0.5mm 3upto0.5mm 4upto0.5mm
c)Bottom 3upto l.Omm 4uptol.Omm 6uptol.Omm
xi) Blister Nil 2upto3.Omm 4upto3.Omm
xii) Droper 1upto3.Omm 2upto3.Omm 4upto3.Omm
xiii) Glazegrindingmark 1upto0.8mm 2uptol.Omm 2upto2.0mm
xiv) Scuming Nil Nil Nil
xv) Lossofsound Nil Nil Nil
xvi) Decoration Nil 10percent 30percent
xvii) Burningdecoration Nil Nil IOpercent
xviii) Offdecoration Nil Nil 15percent
1)Notemore thatnfourinacluster,
4
IS 2857:2002
ANNEX B
(1’orewor~
COMMITTEE COMPOSITION
Ceramicware Sectional Committee, CHD 9
Organization Representative(s)
CentralGlass&CeramicResearchInstitute,Ahmedabad DRK.N.M.4m(Chairman)
AllIndiaPotteryManufacturers’Association,Kolkata SmuS.K.GHOSH
WrruA.K.Jos-a(Alternate)
BharatHeavyElectrical Limited,Bangrdore SmaA.M.v.mYA
SmuB.N.SHIVANANO(AAlternate)
CentralGlass&Ceramic ResearchInstitute,Kolkata SHRsI.cHAxRAaARlr
Chemicals&AlliedProductsExportPromotionCouncil,Kolkata SmuB.D.Komma
StmrVEDKAPOOR(Alternate)
ControllerofQualityAssurance,Kanpur SmuA.K.BANDYOPADHYAY
SmwR.M.GAUTAM(Alternate)
DevelopmentCommissioner(SSI),NewDelhi %auS.K.fiPOOR
SW A.S.SOOD(Alternate)
E.I.D.Parry(India)Limited,Chennai SmuR.UmrwvM
SsnuA.K.MISW (Alternate)
ExportInspectionCouncilofIndi%NewDelhi sHRrKARAMcImNo
SsuuB.Biwmrm(Alterrrare)
ExcelFrits&ColoursLimited,Kolkata Sm G. M.AGARWAL
W-anR.K.CHowomY (Alternate)
GeologicalSurveyofIndia,Kolkata SmuINDR4r-R4ArLY
H.R.JohnsonslndiaL!mited,Mumbai SmuS.G.HKiOE
SmuG.S.PAnwm(Alternate)
HindustanSanitarywareandIndustriesLimited,Bahadurgarh .%0 R.K.Sowtri
SsmuSANOwSOW (Alternate)
HitkariPotteriesLimited,Fixidabad %0 SATISHMAIHAUIRA
SsrruhAY K.wooR(Alternate)
Hotel&RestaurantAssociationofIndia,NewDelhl sHloMAnMAuNrR4amoRAN
IndianInstituteofCeramics,Kolkata DRS.DASGUPTA
MsRrruPARNASEN(Ahernafe)
IndustriesCommissioner,Governmentof GujaraLGandhiNagar SmuR.J.SW
MadhusudarrCeramicsLtd,Mehsrma SmuG.K.b3YA
MmS.K.GHATA(KAlternate)
Ministryofhrdustry,DepartmentofIndustrialDevelopmentNewDelhi SmuP.K.Jm
DRK.R.Muswv(Alternate)
MinistryofDefenee(DefeneeMaterialsandStoresResearch& IkNarawY Sma
DevelopmentEstablishment),Kaopur %sr S.B.YAOAv(Alternate)
NationalTestHouse,Kolkata SmoB.K.BISWAS
SmuN.N.TwcwmorwN (Alternate)
PorcelainEnarneller’sAssociation,Kolkata SmuB.S.GANGOLI
StauN.ROY(Alternate)
RajasthanStateMineralD.5elopmentCorporationLimited,Jaipur SmuS.K.PA’m
Research,Designs&Standardsorganization,Lucknow DSC(SmS)
(DSC-SS)
WestBengalCeramicDevelopmentCorporationLimited,Kolkata SmrrA.K.ROY
SswoTAPASDUITA(Akema/e)
WelcomeGroup,MauryaSheratonHotel,NewDelhi Representative
SmaS.K.CwwmuruDkector&Head(Chem)
BISDirectorateGeneral [RepresentingDirectorGeneral(Er-oflcio)]
Member-&wetary
SmaN. K.B.ws&
JointDkector(Chem),BIS
5
