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 7370 (B) (1974): Razors, Safety(BI-LINGUAL) [PGD 14:Consumer Products and Allied Equipments]

IS 7370 : 1974

(fmaif)

(mmTlb3e)

(19875frj@z)

Indian Standard SPECIFICATION FOR RAZORS, SAFETY

(Incorporating Amendments Nos. 1 to 3 )

( Reafhned 1987 )

@kft/UDC 687.53’052

@ BIS 1991

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

NEW DELHI 110002

(?hih Tim la 3 IeIfkq _I

Indian. Stand&d- - .* --. *. . . . .

~I%CIFICATION’F~R‘ R%ZORS,‘.SAFETY-’ ( Iocbrpdratin;g:Amendr$ents Nos. 1 to 3 ) ’

0’ 5rwmw” 0%ORE-W’O’RD’

6.i q?T Yi?a”rS w9;f; B wFi% et w-CT7 few 0.1 This ,Indian Standard was adopted ‘by the

qfsfa TTTT aTf& ati $3 q-k ?rwi?sar MT< $7 Indian Standards Institution on ‘26,‘July. 1974,

fafTXl %mJT fqsrTs qf7qT h %$I?& b qT1 after the draft finalized by the Cutlery Sectional

fqaia 26 $fTf 1974 51 ?Xp’JT fTSr TIT I Cpmmittee had been approved by the Consumer Products and’ Medical Instruments Division Council.

0.2’ SC ZTT++- IS 7371 : 1974” FT wWT;~F; VTs2 I 0.2 This standard is a necessary adjundt to IS 7371 : 1974*.

6.3‘ $q riT;ra; a dsT7 qF;T? if f+;rfTfqa FFTanf 0:3 In preparing this stand.aid, consideiable

3 V&a a@aT ti q$ 8: assistance has been derived from the following:

Drg. No. IND/&/654-1954 Razor, Sa‘fety, Holder. Ministry of Defence; Government of India.

C.S.5 : 1967 Double-Edged Carbon-St&e1 ( Untteated ) Safety~Razor Blades. Bureau of Ceylon Standards, Sri Lanka.

CAS No. S36 : 1972 Safety Razor .Blades. Standards Associcition of Central Africa, Rhodesia.

+q? WTT-60‘ a-1965 t;srT, +Tti ait a*, tjrT I ’

$jazq q?YfT$ afih, F@fT 7TsP df7s;T I

GG-R-60 C-i965 Razors;Safety, and,Blides, Razor. Federal Stipply Services, ,U.S.h.

4.4 ?a qTWi 8 TEj $ti Fi? 8, f&t f+y ;i;?fT ait 0.4 This standard contains!clidses which call for

~fiq;af % Zl?T?a WTW? WWhT f*sT jrT;n 8 87 VT% agreement between the pu’rchaser and tlie sul$Iier

ti;aia %FfT WW? VT8VTMT& 3 W$-Ff FfTWi? TT

and which pCimit the purchaser to use his option for selection to suit his requirements.

as7 il;~ s$;ai 8 I sg mr++il GE 3.1, 3.31’6.1’ The relevant’clauses are 3.1, 3.3, 6.1 and 9.1.

aitT 9.1 $ I

6.5 Sfi &T;rT $i f% TFT JTT+C 4 f4Xi? &ZTT fqta 0.5 F or the purpose of’ decidin’g whether a ;f;T gTq;T f+zTT 7rgT 3 4T ;T@# at q7?:?wur gy fqG+vr ?i particular requirement of this standard is

+&itr? BT VW7 BTU sf’iirq $ W if qj * alf;aq complied with, the’ final value, observed or

WI’ WTPT & JFT5-t IS 2: 1960-f 3 V$?TTT @f* 3

calculated, expressing the rest& of a t&t, shall be rounded off in accordance with IS 2 : 1960t.

TcW f3sT 3lTq I $qffqa Wif 8 FTTf+ WT;T Vd ‘8 The ntimber pf significant places retained(in tile

Te WT$.fqtf3 VT qb’T* sf f*k qT3 3 f<F SP 8 1 rounded off value’ shbuld be the same’ itS that of the specified value in this standard.

*slYa ‘itt7zi-f * f+fiTfa’i 1: tfi%ZmqqT 4r;ff ;t;*pprhi;r akifl fqVr (*@fern’ ) I f

%petiiEcation for ‘blades, razori’safety. tRiles for rouodir&roff numetical values ( revis& 1. ’

1’

IS 7370 : 1974

1 Ev?SI~ 1 SCOPE

1.1 m ~;lzi; 3 8’t;ii iWti 8 ?x@ FTT% ?T?i &i? 1.1 This standard specifies the requirements for

tsX? ;t;” 3TkT$ fTdf75 %t S$ z 1 safety razors with two shaving sides.

2 TYPES

2.1 Razors covered in this standard shall be of the following types:

a) Separable;

b! Non-separable, non-adjustable; and

c) Non-separable, adjustable.

2.1.1 J&f % fgP W%fr 1 if -fFi FfJT g f%B 2.1.1 Line sketches of the three types of typical

+VE? tW? $7 F+XTT t-i Sf 8 I safety razors are given in Fig. 1 for reference.

SEPARABLE

NON-SEPARABLE, NON-ADJUSTABLE

NON-SEPARABLE, ADJUSTABLE

mqfa 1 im, cm?, srwit

FIG. 1 RAZBRS, SAFETY, TYPICAL

Non-Separable, Adjdstable &+P’fkG, iSrlTat=g

Non-separable, Non-adjustable SfqritW, WFfTEFtW

Separable fsbs

2

IS 7370:1974

3 MATERIALS

3.1 Handle

The razor handle shall be made of non-ferrous corrosion-resistant metal or high-impact heat- resistant plastics or a combination of the two, as agreed to between the purchaser and the supplier.

3.2 Cap

The cap shall be made of non-ferrous corrosion- resistant metal.

3.3 Guard

The guard shall be made of non-ferrous corrosion-resistant metal or high-impact heat- resistant plastics, as agreed to between the purchaser and the supplier.

4 DESIGN, CONSTRUCTION AND WORKMANSHIP

4.1 Safety razors shall have two shaving sides and shall accommodate safety razor blades conforming to IS 7371 : 1974*. When assembled with the blade it shall be evenly balanced. The blade alignment pattern shall be of bar, pin or end located style or a combination of bar and end located style in accordance with Fig. 2. The handle shall be knurled, grooved or serrated to provide a firm grip when used in a manner consistent with normal use. The length of the handle shall be between 70 and 125 mm and the diameter between 6 and 15 mm measured on the largest cross section. The razor design shall provide for proper positioning of the blade conforming to IS 7371 : 1974* for satisfactory shaving. Adjacent to where the blade cuts the whiskers, the razor shall be provided with a guard with the continuous edge to smoothen and tighten the skin in advance of the cutting edge of the blade. Openings shall be provided in the razor adjacent to the cutting edge of the assembled blade to receive lather and whiskers removed from the shaved area and thus prevent clogging of the cutting edge.

4.2 Threads, wherever used, shall be free run- ning and provide for clamping of the blade in the razor so that it shall not loosen when shaving.

4.3 Hinges, wherever used, or any other parts which may affect the assembly, disassembly or operation of the razor in the normal use, shall

*Specification for blades, razor, safety.

3

is 7370 : 1974

fz%;rq wrar3 ?I EFTq $8 qr?T ait7 as7 %j S&T be durable, easy to operate and shall maintain

3 FTl8 % 8tTT;T +-a %? FT@ f+7fT 8 T& 91% @ I the position of the blade during use.

4.4 f%$Wf iGT3 ;i +is ;F;t WFr4 t fqp 'is7 3 4.4 In separable type of razors, the blade chang-

WVfl fl=VT ;F> *;r VTrlf if i?T Ztcif, ?jTCTT %fqT ing shall be provided by disassembling the razor into three parts, namely, cap, guard with handle

3 VT~T @CT WWT F%? ~~787~ :fTa $T @a ;F;t or cap guard and handle. 3lVT-WVT 57% %T SITVTTT 3 I

4.5 aTf~$tbq. aifT 3TtTqTqtJqf%FS$ =jd 6? W& 4.5 Razor shall provide for readily changing the

if $kFi3 5? fqTTi 4WT f+$ &+I m"fK OF?+ * blades without disassembling the razor in case

=RWT $I I of non-separable, non-adjustable type.

4.6 qfqq?sq qk p~~$ptsq f%~q ii; i;il7 3 C&Z 4.6 Non-separable, adjustable type razor shali

fqF5T8 $ fTy FRTq%T;r B73 8 WVPTT @ ait 33% have adjustment for blade setting and provide

%7 ~~ Bg%q $I fq?T WFVT f%$ 6b 6bl’VT 8 for readily changing the blades without dis- assembling the razor. The razor design shall

3333 %T qTW4Tq i=$ I 537 fT fgsTg;r $TT 37i$ %‘T provide for proper positioning and adjustment

@ f;r; tiFi+W;r~ FCT ?T $T$t FTT8 4 fqy JTT3 +jj3 of the blade exposure for satisfactory shaving.

+I Z3F fhfa 9 fqa3 387 *s mm7 qFf;lf 4 are7

f+iift 75% Ir;” WWeTT @ 1

BAR STYLE PlN Sf YLE

0 I CIA ---+-

13~22 mm -- I l>e3mmt.

END LOCATE0 STYLE

*a - z&T t 5$? a *a$ ma swa 3 f;r+? wm ir NOTE - The thickness of cdntral bar shall be mea_

W3 srq I sued at its lower portion along its length.

wi? wvrm fq* 3 All dimensions in millimetres.

angfa 2 z?fr f-T? Tl q%qT

Fro. 2 BLADE ALIGNMENT PATTERN

Bar Style qq Gi7

End Located Style fVi fqST% qT%? %i?

Min V.

Max aI%.

Pin Style fqq $%I

4

IS 7370 : 1974

4.7 All components of the razor shall be smoothly finished; and serrated, grooved or knurled surfaces, if used, shall not have sharp edges or burrs. The guard shall be parallel to the blade within 0’15 mm when tested as described in 7.1.

5 FINISH

5.1 The components of the safety razor made of non-ferrous metal, except aluminium, shall be nickel plated. The plating shall be capable of withstanding the acetic acid salt spray test for minimum 15 hours in accordance with IS 6910 : 1973*. The aluminium components shall be anodized in accordance with Grade AC5 of IS 1868 : 19687.

6 SAMPLING

6.1 The number of safety razors to be selected from a lot for ascertaining conformity to the requirements of this specification shall be as agreed to between the purchaser and the supplier. A suitable sampling scheme and criteria for conformity is recommended in Appendix A.

7 TEST

7.1 Prallelism of Blade and Razor Guard

Using a new blade conforming to IS 7371 : 1975$ the parallelism of the razor shall be checked by (a) mechanical method as described in 7.1.1, or (b) optical method as described in 7.1.2. The difference between the minimum and maximum readings shall not exceed 0’15 mm to comply with 4.7. The straightness of the blade shall first be checked and any deviation, if found, shall be taken into account. The test shall be conducted on both shaving sides of the razor.

7.1.1 The following procedhre shall be adopted for mechanical method:

a) Inserting the blade in the razor,

b) Trueing the razor up in either V-blocks or a fixture by levelling the razor by dial indicator, gauging the blade on top of both ends of the cutting edge,

*Method of testing corrosion-resistance of electro- plated and anodized aluminium coatings by acetic acid salt spray test.

tSpecification for anodic coatings on aluminium ( first revision ).

$Specification for blades, razor and safety.

5

c) Relocating the dial indicator anvil to obtain a reading on the top of the guard; and

d) Moving the dial indicator, gauge across the top edge of the guard.

7.1.2 The following procedure shall be adopted for optical method:

a) Inserting the blade in the razor,

b) Trueing the bIade at both ends under the optical microscope, and

c) Comparing theedge of the blade with that of the razor guard.

8 MARKING

8.1 Each razor shall be legibly and indelibly marked eyther with the manufacturer’s name or initials or trade-mark.

8.1.1 The outer package of each razor may also be marked with the Standard Mark.

NOTE -The use of the Standard Mark is governed by the provisions of the Bureau of Indian Standards Act, I986 and the Rules and Regulations made there- under. The Standard Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the require- ments of that standard under a well defined system of inspection, testing and quality control which is devised and supervised by BIS and operated by the producer. Standard marked products are also conti- nuously checked by BE for conformity to that standard as a further safeguard. Details of condi- tions under which a licence for the use of the Standard Mark may be granted to manufacturers or producers may be obtained from the Bureau of Indian Stan- dards.

9 PACKING

9.1 The packing shall be in accordance with the accepted trade practices, or as agreed to between the purchaser and the supplier.

IS 7370 : 1974

Pf7fim ii; ( ciia 6.1 )

APPENDIX A ( CZuuse 6.1 )

h? +Fif * fVq m_?f 83 ‘-6i h;iT 9% ST~S’XlT ‘4-i? sii?i%!i

SAMPLING SCHEME AND CRITERIA FOR CONFORMITY FOR SAFETY RAZORS

A-l LOT

A-l.1 All the razors in a consignment of the same type and material and manufactured under relatively similar conditions of manufacture shall constitute a lot.

A-l.2 For ascertaining the conformity to the requirements of this specification, inspection and testing shall be carried out separately on each lot.

A-2 VISUAL EXAMINATION

A-2.1 Visual examination shall be made for the defects listed in A-2.2. The scale of sampling and acceptance numbers shall be in accordance with Scale I in Table 1. This scale has an AQL of 4’0 for total defects expressed in terms of defects per 100 units.

RTVJII 1 ~4 33 VT ~~TTT sik ea’ts~ri3T *PT

(%T g-2, g-3 Vk a-4 )

Table 1 Scales of Sampling and Acceptance Numbers ( Clauses A-2, A-3 and A-4 )

Lot Size ( No. of Razors

in the Lot )

(1)

50 Tlzh up to 50 51 ir 150 51 to 150

151 B 300 151 to 300

301 zr 500 301 to 500

501 ir 1000 501 to 1 000

lOOO?rsfR 1 001 and above

‘hTW 1 r--_A-_-7

yrr BTn 6hVkr

Scale f,qT ( +Pf 1

r_---h__-_7 Sample

Size A cc”upre; e

( Defects ) (2) (3) 8 1

13 I

20 2

32 3 20 1

50 5

80 I

(iwir 2 r-__h-__7

wprr ar$a Fi%d aT

FiwJT ( at$ ) Scale 11

r_---h---_~ Sample Acceptance Size Number

( Defects ) (4) (5) 5 0

8 0

13 0

32 2

50 3

s’wn 3 r__-h_--y

asn;rr srgq R?WhT

tiiwT ( .&i-i )

Scale III r____h ----7 Sample Acceptance

Size Number ( Defeclives )

(6) (7) 3 0

5 0

8 0

13 0

20 1

32 2

w-2.2 wbi”f 8 &WT faF;q 7T$ ?T% tF+FJT ZTIT A-2.2 By visual examination the following

f;rWfkTfqT ?i t &‘?i %t +T d’ qTp : classes of defects shall be observed:

8) $tTT ‘qT+TW + rlTW, WfkTWf @ WWT a) Part/component missing, damaged or not

fTfTV JJTW? qrT 79 WTrlT WT 3; of the designated material;

7

i

I

f&TZ a fWfa if QT JTl;TT iF;T #+i? '4-E @ WUhT WIT WTT I In case of dispute, English version of this standard shall be considered authentic.

1. IS 990 : 1982

2. IS 1660 ( qTT.1) : 1982

3. IS 1660 ( qTq 6 ) : 1980

4. IS 10228 : 1982

5. IS 10264 : 1982

6. IS 12304 : 1987