RECD NO.1.E-33004,99

4 · I[-~wg 3(ii) ]

4a · 77 747

1 · ARIT guntr #1 &a & &, 3a6ruT & (iv) & % Qareif fat , 50HT uTaTta, ffrr WTZIU, 31f ;

3 · T 4 Ay 8 3713 Hfeo quldit Y 31U1RT bat

4d · 31 T7TR 371e10v1

7Y · & fH -TT 3 Zar # # Fi (3) #am #T 5uiat 3oTRTTT 41 8 fu STT &1

9 · (1) J7a ddaT #T 3UR 34113 jua da #1 31UR 371/ #1a1 &am1

10 · (1) 9cref AT & 3TUR 3473 9ref HTT # 3UR 3713 Alat &iaj |

11 · Hef7ya & fra 37 f4Ai #, J6T #8 % ~J ~ 4 &1 wriar faxf 4aref # 4RuTa & AdiaHa #q # f4 T4 &, d61 0 4 &T 32f ~JTNT JJ @ &6 3Ad ZUAG # 4ga & Tat &1

12 · 3357r 3414 Taa 33d # Qaaa 3 @afaae] 347133T07 3o13 &aft 3 37 37id A 04 94g 3474 & 1u J Wda 347 3414 #1 5rilas 51J1 |

13 · 71G 3013 _si 33d # Aa 3 @@Rr 5414 ZI-4G7t 3a18 &ah 3 37 37rd A 0ri Wdd 3413 &1 1ut JuT 9da 37 34T3 &T 5aics &1u 3 Z H3d # @fafor fxm 3fra $ @v @ 3J 3413 #1 cular d7faa 4T 3talfajar4 3THUT 4 {ary fax 3o4 qlalat & Tar qruilar Taf F4141 JTQUTT |

14 · 34134f & GRIHaa ) JjuTG 3 34iujari _(1) H8R , 37373, 2rqam 4T 364 3a134 # GR1TaTa]JuT 4 3940T, 5a 76 3a-4u @afafzz T Taw J, qf TA 4 T 33xd # @@faoz SI 33TTJTT TT cuiatdrd aa Jnat|

4T · II_@G 3(ii) ]

15 · 371 3414_(1) aii 37d # @fRa 34154 & 9rat #t #Ar3f $ 3ulm {6d SV SI 30134 # FT4 f4r41 M FaJn, M 3aa 33d # fafafae 81

16 · farly 34513 _ (1) 9iadt 35d # @@fae 37715 t # # 9riav &J f 3atdh HlG # 3faeraa 0#t Sl 3413ri # SI 33184 & Tula GRT €uaat HahJl, J 34yaa &1

17 · 3re@i #q # 7dda 53rt 33 37d # @aTAez & J Aq # 373 Ta %0, #T 9uiJr % 54 ? # 3mt fu & #Jm @ #o44, TRGT 37 @ua & Arat & Qala 4yd &4 &4 # #4 # #7 04 &R 0rt 3a134 4 71HROT 3qular # Jn Tua & TQ H1a?4aa 41 3642T 3T 5nadio #i

18 · Qm} 30134 f&mant 3ccrcTr quiat A HATT &7 &1 dfav:-

19 · H1731 Fuag Mat 3m7m 4 @a@afeec 4171 @uai 3k 3aai Trul HuAG Hlat #T TuJ 3ad Tm # HaURUT & HT?t JHuF & quljla & RaT4 Tft 4uia & Fv wut fhv Jat|

20 · TuiG 3 5aias (1) J & 3da ardt 3534 4 Gamra Hk @afafeez 9 & & 3aa JiT # F 04 %una5 # Fv TAIaRa wiq J #T wdiaj &1J1T | (2) ATAd ak Q rrat J7wd # @fr gurar} 3k 3atd #4r1: wia} & wuiatr fvt TTQJTT;

21 · TQ 371/ # YaaT TTe 4 Ai & fx & ;773 # Tamt 4 5it :aq 31 stulfudj Jzrugt 4 qrtt # Rhan] #644 TRTT # % 3Haat $ @a &8 f4 JQJII

4 · 7 T75yA

4m · IIwve 3(ii) ]

22 · 7zly) 31f8579 (1) #44 HTT, f&raaa#T HIa 71+o7 *7 $ 3e24 # faaiuh 0 Teql 311f2yr ;4r #raroam 3 faait # #1 325h5 & 7esf # 3c7fo4y Jz]Hk Ai)*t ERT 3451 31oTRi4y 31 Tarfoja wa)3 3rt)77zzy 81773 5riat?TaT , T fcd# # YRea 3faRGTT # camti

23 · a1C 3 #iY $ 7q4 AiThf & 38R4, 3roT Je _ (1) 57 Fyxif 4 H17a 5 T H Hi9 # 7d& HTaG 3 TTdua , F41TT , 3187r8T0T , 31 HTYFFraMT # HTz #Tuf & 3CcRaruza 37t47ut, HauRUT, 57J4 77zhy %4 QuiaT #1 s1J1I

25 · 3fesrqHToT 81 3f8ret HR ) 37re70T (1) friat #1 {reghv 3fe574 37 3064 ATT , 39F7 3)#r3r)77ezt4 H1f235 criareiat 81 3f87etr' # reaf|

90 · II&vg 3ii) ]

9 · &1 797

26 · . Fcer HIaGs 'Arr HIaG' 4 # HTGG J1€ 4 Aq & Qa 74G 3f34a 8 & @z @dnuo AIG # %74+a # fv #4 TTR GRT & 344 Aq Jai 41 @afaa @0 JI &1

27 · . friug HTT 'ferirua H1a&F' 9 # HTGi a 4 Aiq & Qa 74G 3a97 & Ji fx TTan TNG * HTUTG # fv 444 TTT 3r1a1 {T34 TRGR GRT M 34a @fa T 4 @affa f0 JN 81

28 · #Tyara HTa& '#rani Ala&' 9 # ATaR J 4 Aq & Q #4G 3fa197 & Jit 7zl4 31few7Y, Ecri HIG 4 fdv Alat # 3fafaa fx ATG &C 4 Aq & HZuITG & Fv #c4 TAT 4 TJ HYTT ERT 4 37& Afa T * @@afaat @0 J 81

29 · AlGTG Ji CoHTa GTT Tm JJj Ja TG @ #o44 TGT ERT 31o42 @afaeez = #, GOHla 3 TFa1; & Tal Fdar, fdfg Tr #Tan T7TG 31 &TATT & fedug TT4 #TuaT ATT HTT TRGT &1 1oz Rr canr # AY fa7M Qus # <uR fv Jnoa)

30 ·

32 · Adar fad4o 3r #rahr; AGTaf #T 33retot 5add, fAder HTaTa5, 7o @dNG A 3 974v #ran HGF, 37 FHTT 5 @ar fv @aat JeT P T4T &, Jrt T T Tou $t Qj?iatT E1RT HF4 HA4 W a AV J Aiarfa Aalri $ 3R }3f1 @Nv Jjti 33. Ar 3 ztr4t (1) T3_#iV F 544 5747 Y?7ia HIGF (7414_AGTF) Fua, 1988 Jq A4n #61 J &) # 534 &RT Axnm fr4 Ji &1 T7 04 AhG # Arod T 4hn 78t 43j >

4T · [I-~&vs 3(ii) ]

3 · RT #g 3q0, fafud #T4ara Z 3T4R H?4a, Jr 3rerar < fv &T #amt 4 &3 &i 3ferifa 8 J Aod & 347t fh & 3k Qm &13 QMFT, Te faafuga Ta f44t JT4T |

41 · YT4 TTT & @ T fax (3) 37 A4ai & 3qdu, TUNR #oc4 TAR Tg a1 3 Ai #1 @afadarzt , HTUTaT;, H1dwat 41 3 fraf # Hra T Riinyi; #anAdizi # 377fd, tonziaio $ @v Jid Atx & 37 @ fant H1acat Q Tr 3+ YJG fx #ans 4 37 374 37U #,NT JTQ Fx TaXOT 4 MT &4I

1 · HATTTT #ur # 8711 HATT tut & 3014 4347 6lai (5 rad) 4i347t fx T & & Isf34 & & FTTT #T J QRfu # & # fju 3 TTaT 7Fls # &R TTTT &1

2 · Ja #ot # sa1} Ta tut # g013 734m saft| (4da sr) FeRfz<ot &6 Et #or & j frxi Jd & Aez # ? 6 W Ja & TT & #7 & ajf # qred TFa1 & HR Ja # 1ju & TI #TTT &1

2 · HTUTGT # 341-3TUTGt # 34716 Dat Hicr 6aitl

4 · #fy aj & 3413 #jv dJ # 341} {347t 5fat Havug safI (Ariaj

5 · #ofly ~au # 3413_&4 Z&rut # 3014 4347 A &df #ohog safI (5ag rad/s?)

4a · 71 {+ 3HTTOI

4347 · M # #rug @ Qx T #, & fxi A4q 9 % & % &, nNaaru &, & 0o64iHG 44r5 TA 4 FrG 47 @v &N % A #ius # 0a 1343 7+ *tri &1

6 · Ja 3k dJ # 337} ~ J 3k dj # 571 HZ7 9fa #403 baii (5aig m/s or ms-1)

9 · 7jT #G4 # 3018-(i7t 4Gu # 541s Hz7 # 0 #zT Q4 sahti wia : m-l)

10 · HGRRT Ta # Tfozvir # 30714 FFTRI 5f # afoza # 3014 # Hizr # &a RuT 07F aumI wrig ml) #av # & %W VG ( AARI T@ # rfzmta $ @raAt %ar #m 5in$ 39dam ad H1e4A # V #v &1

427 · d J & & Q faciJA $ dc4Al # 03 #T Wa T 4403 # <o & &1 1N=1kg: Imls?

7 · Het @ AC4H # 3015 ZG & &RT 37Io7t QH 3df & 38 A4a gh #, 1Ad &Rf 3R 4ounG QRethut & T6t &, # NFdgi Q Hiav # & W #1 & %T &1 1 Nm=m?kg.s ? frqu ~ & 3quf # 3713 J () # 7q # T frdi Jnaft *uf * Nm &1 5_ adra # 3413 _ &a1a # [913 4FhaT 6aff 1 (sdigi Pa) MnFat d6 &a1a & & 0 aj Hz # HATM]TT 9 qsatq 3 #ana W 3a Q 74Tt &t 31rTT 81 1 Pa = 1 Nlm? or 1 Nm2

8 · .

10 ·

11 ·

12 ·

13 ·

1 · Wlm.K = 1Wlm? IK Im

197 · u3f ITra # 3716 aga udf Ta # 5713 Rara 5T Hizz s1u1 | ((iaf : Clm)) E7 #F Wat Ja Hcr fx #ANJT GahM 4 Tat #1 Q faga Mf T & M 0F Im H7 3T4NM # & 3 FAT TJf Q5 #F &t1 3_ f4a FT Ua # sa1 fya Fh Ird # 3014 #TT Wia a Ha bii (Maig Clm?) JaF Ma &d Hic? & fga FrTT Tcd & & 3oToT Trl # caet a TAGIM Tiuai, @d # %ict $ M T Hc7 417 # # TT QG #rF @4a aof # 31dR1a &d &1 @ga Tala , fya fa8a31 fga waia} &q # ;713 fa4a @ga @ava 31r TTTa , f4a 9a1at d; # 3013 &2 pafi (rai acz, V): [r Qrtr # 3-adif &RT d JN J 3ulaa TR # & fr #T @y $ dv & @aaR & #81 J &, 5a 2na7 37t fazgut & &7 &ot QG & # TT 81 1V=1W/1A

4 · 77 {A 3e7rui

11 ·

14 ·

4n · 4 TF9A

5 · .

4r · 77 7TA

1 · a Fyedarur TId1s # 3718 Hz? & frAT Ta m &, 84 # YdT € J3d # "cm" & MTa 8, & @ 7 3719 It &1 3 HTTHT Daiai 3 76 dala?31UG # g711} MFT & M Hahdi &1 3 W 58 W5 3+4 3015 3efa 'kg' # 7u fAINUT Z Taa & 37 5 RUTAG)D1aliai 3 fv J1 4 Kg 5T cm" [ara afiat #T 81 Kglcm' kg10-6 m? = 106 kglm? 3ht qa glcm] 1000 kglm)

3 · 4 46 4/ ~ 4

4d · 31 79

41T · IL-_@ug 3(ii) ]

4 · 7 T4

4T · [1-@ug 3(ii) ]

88 · 317rr (A4a 17 &v) 3FUT4 #9 # ~dqa &01} TAa m # ;718 Tj 3 @dHlm #uTG # 3Q4J # f # # 3778 734 Hila &a | TjAt Hla 1852 #i # # # Tar &1

10 · 37o1EG HIAT # 5o14-Jc8lwt HIA & (5riaj 301} +ozajat saft| R) nda , 3TITI @ao # tt 3coTrG Gcrat dd AM &, & Q5 faaijift a # A # var & AR $ Tf a 10-4 FrF TJ & 3T4T 3a YHR 2.58 X 81 3757M &t, Jf 3& 4raY # AT Av & & % TT4 # FRR Tafi HUTAT ar4 R = 2.58x10-4 Clkg 11 J # 93n5-du # 5+1$ @rizi7 4a trt faailhiiz 9a saff| (Mala Ect Jariat kmlh) 9497455 Tia & ranm Aa4 &i 7 & & &a J T3 # MTQ , 0 #74 T &1 7a # 1G &2 # 0 frairiz7 12 farl Al # G4HG # 3a13 &af fiq A & 4TAG # (9da : C) 3778 #c #c f#oi # 4it BJRd #J $ Tiar &1 # FETC4 Tf $ 5T 3qrJr &, Ad Ic = 200mg a4a d &7 $ Rv Ar4 &nami 13 GczHTG # faaly 3q4iat # fazat 33116 &aft GEuHlat # fdriy ('aia : q) 3tyat # 371 faaza 100 faaiut # TT sJ1T | fdzat 374 34844 Hrhfr4f # HTTTGT , T1H 379at_3t Jst a3 d &7 & @v f4t JQJtI

3718 · &t TA (U)erg _ (2)dyne (3)poise 4)stokes (5)gauss (6) oersted

4 · T7'Itoi & & (a4 & gu % Sai 37Ri #FaG,~iqg 1956). #* 4 @riq 3114 0a4, fzoit # Rrjr &14 &aaa #a $ @v Mqaa # J &1 m46 @arl 37714 #U7 79 $ Fv.53T # J &1.

344 · Grlm -5

4a · # {T 37q41roT

105 · evT

0 · 089

10 · "HzT MTT KT" 10**7JT" 10* eVT MHzT" 1072 m T 10"KT

0 · 30

0 · 30

8 · 5

0 · 34

0 · 089

0 · 30

0 · 30

8 · 5

0 · 045

137 · 0359895(67)

0 · 045

70973731 · ,534013) 3.2898419499(39) 2.1798741(13) 13.6056981(81) 0.529177249(24) 4_ 3597482(26)

0 · 0012

0 · 0012

0 · 60

0 · 30

0 · 045 0.60

27 · 2113961(81 3.63694807(33) 727389614065) 3aa41Gt 9 7093897(54) 5_ 48579903/13)_ 0.51099906(15) 4 83633218(71 5.44617013(11) 2.72443707(6) 1.37093354(3) -1.75881962/(53)

0 · 30 0.089

0 · 089

0 · 59

0 · 023 0.30

0 · 15 0.020 0.020 0.021 0.30

0 · 61 0.15 0.32 0.15

10 · kglmol 0.15 1076JT" 0.33 10 0.15 0.15 10* 7.2

0 · 0084 0.15

0 · 59

1 · 007276470(12) edz1 &< #, mpc?/e} 0.012 938.27231(28) Mev 0.30 FD-IdK 4T44G 3i47 mplme 1836 . 752701(37) 0.020 ZTG-TcT 4c4hg J5NA mplmu 8 .8802444(13) 0.15 Mela @@lalierz 317r1 elmp 9.= 5788309/29) 10 Ckg" 0.30 Ma #m GE4AG M(p) Mp 7.007276470/12) 10 ~kglmol 0.012 ila #Tr4ea TuT 484, Acp 1 32147002(12) 10T5m Acp 0.089 hlmpc 2.1 0308937(19) 10-16m 0.089 AcpIZw sizla 3 aq4 34u p 1 41060761/47) 1026JT" 0.34 & T@cla # HpHe 1 . 521032202/15) 10-23 0.010 Zr #Nca UpuN 2.792847386(63) 0.023 9 J # 5lmt & 5a oHzo 25.689(15) 106 3a4 qtetot 287 mily Aarf, 25'C, 1-Up/ Vp ARTR zia 34u, u P 1.41057138(47) 10-26 JTT (HzO_sph 25"C) 0.34 & AJacla # U pUE 1.520993- 1129(17) T0 ` 0.011 7rrr AJNca # p pMN 2.792775842(64} 0.023 #l Ef g a 347 Yp 26752.2128(81) 70*s TT" 0.30 Yp/2v 42.577469/13) 3raifaz MHzT" (HzO, sph. 25'C) 0.30 Y 26757.5255(81) 107sTT-T 0.30 p2v 42.576375(132 MHzT" 0.30 TTT TG &O4h1at mn 7.6749286(10) 10 kg 0.59 1 4008664904/14) vaIzT &r #, mnc?Ke} u 0.014 939.56563/28) Mev 0.30 TTNI ZRmIG 3NTA mn me 1838 . 683662/40) 0.022 FE-4rIa 4TTAG 351 mn Mp 1001378404(9) FV H 0.009 &olat M(n) , Mn 7.008664904( 14) 10" kglmol 0.014 7G TTFTG TJT 404, Ac, n 1.31959110(12) 1075 m 0.089 Nmnc 1 20 Ac; n 2.1001944519) 107T6 m 3 Th 3eq 0.089 Hn 0.96623707(40) 10*26 JT" 0.41 ar Aulia # Hn Me 7.,04187563(25) 10` 0.24

0 · 24

0 · 24

0 · 24

0 · 59 0.012 0.30

4M · Il-_@ug 3(ii) ]

4a · 3 T47

2 · 686763(23)

8 · 5

22 · 71108(19)

8 · 4

1 · 151693(21)

1 · 164856(21)

5 · 67051(19)

3 · 7417749(22)

0 · 60

0 · 01438769(12)

8 · 4

2 · 897756(24)

8 · 4

37 · @4xi # 4ylamrf @a 3uidt #T 3quat Fz SQUTT: - 1 Qarnluait YadI (&) Ja 3r Vaznaat # fAxut #1 'HTTTT &T Qawnlerit 4dcTT 20'c 5 A J, fAaur & %a 3T4Ta & fAXuT # 3alae, 37 74AG Q An J Qoroat # H1U.G #1 3T 81 4rims "%Vol" &1 (T) Ja }R Qaaaat # fAout # 'GZIG ERT Vctlalai YaTT' faojot # J7 4C4Am # fAaut # Jc Voalaat # GcuHlm #T 3347 &1 Igr "% Tat" &1

4a · 7 THA

3 · Units of Weight or Measure to be based on metric system

6 · (1) Base unit of time- The base unit of time shall be the second.

9 · (1) Base unit of luminous intensity:- The base unit of luminous intensity shall be the candela.

10 · (1) Base unit of amount of substance: The base unit of amount of

11 · Rules of Construction:- In these rules, wherever the expression 'weight' has been used as symbolising the quantity of matter, such expression shall be construed as representing mass.

13 ·

14 · Decimal multiples ad sub-multiples of units: (1) Decimal multiples and sub-multiples of base , supplementary, derived or other units shall be formed,

15 · Permitted units:- (1) The units specified in the Fourth Schedule be used along with the SI may units, subject to such limitations as Schedule. are specified in that

16 · Special units.-(1) The units specified in the Fifth Schedule such manner shall be used in that their values may be expressed in terms of such SI combination of SI units Or units, as may be appropriate (2) The multiples and sub-multiples of the units specified Schedule shall in be the Fifth formed with the help of SI prefixes specified Schedule. in the Third

17 · Temporarily accepted units - The unit of weight or measure the Sixth Schedule specified in may also be used, subject to the Government condition that the Central shall, at least once in every ten years after the these rules, commencement of review the need, Or otherwise, for the such units: continuance for general use of

4 · II_wwg 3(ii) ]

18 · Units which should be progressively discontinued:- (1) Subject to sub- rule (2), the centimetre or gram or second units specified in the Seventh Schedule, and the units of weights ad measures specified in the Eighth Schedule (being units outside the SI), shall not ordinarily be used except for the purpose of scientific &nd technological research and no such unit shall ordinarily be used for the purpose of imparting education (2) The use of the units specified in the Seventh Schedule Or , as the case may be, in the Eighth Schedule, shall not be used in any field except in the field of scientific and technological research. (3) While using the units specified in the Seventh Schedule, Or , as the case may be, the Eighth Schedule for the purpose of scientific and technological research, such units shall be used only with the corresponding symbols specified in the Schedules aforesaid.

19 · Physical constants - The physical constants specified in the Ninth Schedule and their corresponding numerical values shall be used for all purposes except for the purpose of research connected with the determination of their values_

344 · 6fm - 7

20 · Coefficient and symbol:- (1) Coefficients include the terms defined and

21 · Formation Ofnew units:- No new unit or weight or measure shall be

22 · National prototypes: (1) The Central Government shall, for the purpose of deriving the value of kilogram, cause to be prepared a national prototype of the kilogram and shall cause its accuracy to be certified by the International Bureau of Weights and Measures equivalent to the international prototype of kilogram ad shall thereupon deposit the same in the custody of the National Physical Laboratory, New Delhi.

23 · Custody maintenance, etc of national standards of weights and measures: (1) The work relating to the realisation, establishment, custody, maintenance, determination, reproduction and updating of national standards of weights and measures shall, on the commencement of these rules, be the responsibility of the National Physical Laboratory:

24 · Realisation and establishment of the national standards of weights

25 · Custody and maintenance Of prototype standards:-(1) The national

27 · Secondary Standard - The expression "secondary standard" means set of standard weight or measure which is made or manufactured by or on behalf of the Central Government Or State Government for the verification of any working standard.

28 · Working Standard_ The expression 'working standard' means set of standard weight or measure which is made or manufactured by or on behalf of the Central Government Or State Government for the verification of any standard weight or measure , other than national prototype , reference standard or secondary standards

29 · Standards which are to be fabricated by the Mint: - Unless otherwise specified by the Central Government, all the reference, secondary and working

4a · 4 T9

30 · Places where reference, secondary and working standards be kept -

31 · Period and manner of verification of reference, secondary and

32 · Maintenance of Reference, Secondary and Working Standards - Every reference standard, every secondary standard and every working standard, irrespective of the place where they are kept, shall be maintained as far as practicable in accordance with the guidelines issued by the National Physical Laboratory from time to time

33 · Repeal and savings - (1) The Standards of Weights ad Measures (National Standards) Rules, 1988 (herein under referred to a5 the said rules) are hereby repealed: Provided that such repeal shall not affect: (a) the previous operations of the said rules or anything done or omitted to be done or suffered therein; or (b) any right, privilege, obligation or liability acquired, accrued or incurred under the said rules; or

9a · 31 {54A

344 · 6xn - 8

1 · Unit of Area: The unit of area shall be the square metre: (Symbol: m?) The square metre is the area of a square with sides of one metre each. 2. Unit of Volume: The unit of volume shall be the cubic metre: (Symbol: m3 The cubic metre is the volume of a cube with sides of one metre each. 3_ Unit of frequency: The unit of frequency shall be the hertz. (Symbol: Hz) The hertz is the frequency of a periodic phenomenon, the period of which is one second:

4 · IL_&ng 3(ii) ]

5 · Unit of angular acceleration: The unit of angular acceleration shall be the radian

4 · II@wg 3(ii) ]

4d · *7 777yA 3ql4rrul

11 ·

12 ·

13 ·

14 ·

4 · 7 <4A 3rerrv

8 · ,

4 · II-@ue 3(ii) ]

13 ·

14 ·

15 ·

344 · GH1 -9 -

4 · M@g 3(ii) ]

4M · IL_wug 3(ii) ]

4T · 7 T4

4T · 77 <4 3771erru

6 · 6260755(40) 4 1356692(12) 105457266/63) 6.5821220(20) 2.77671/14)

0 · 60 0.30 0.60 0.30 64

1 · 61605(10) 5.39056(34)

10745 · ELECTROMAGNETICCONSTANTS elementary_charge 1.602.1773349) 10 T9C elh 2.41 798838(72) 1014 Magnetic flux quantum, AJ Do 2 06783467/61) h2e 10-TsWb Josephson frequency- 2elh 4 _ 1.8359767(14) voltage ratio_ T0TAzV quantized Hall conductance e-/h 3,87404614017) 10ss quantized Hall resistance, Rh We?= 25812.8056(12) 1ZNoEla Bohr magneton, VB 9.2740154(31) en/zme 10-24JT" in electron volts, 5.78838263/52) pBIe} 10" eVT in hertz LBIn 139962418(42) 10" TU in_wavenumbers_JBihc Hzt 46.686437(14) in kelvins_UBIk m T 0.67.17099(67) KT nuclear magneton_eh/2mp pN 5 0507866(17) 10*27 in electon volts,_UNI {e} JT 3.15245166(28) in hertz_UNIn 108 evT 7 in 16225914(232 wavenumbers MHzT HNIhc 2.54262281(77) in kelvins_LNk 102 m"TT 3.658246/3)) 10KT ATOMIC CONSTANTS

0 · 30 0.30 0.30

0 · 30

0 · 045 0.045

0 · 34

0 · 089

0 · 30 0.30 8.5 0.34 0.089 0.30 0.30 8.5

417 · 41 T4

5 · 67051(19) 3.7417749(22) 0. 01438769/12) 2.897756(24)

10 · BWm" ZK 34 10 TWWm 0.60

8 · 4

8 · 4

4T · IL&s 3(ii) ]

4T · 71 {y4A 377774601

3 · For the purpose of determining the sugar content present in the sugar solutions either of the two following coefficients may be used. Degree Brix or sugar degree QS): (a) Degree Brix is the percentage of sucrose present by mass in the sugar solution. In reporting the degree Brix, Indian Standard specification for Brix hydrometers: (IS: 7324-1974) shall be used, till such time, the Director of Legal Metrology or the International Organisation of Legal Metrology prepares such document: (b) Sugar degree on the international sugar scale is defined as follows - The 1009 $ point of the International Sugar Scale is fixed by the optical rotation 'p undergone by the polarized light of the green line of the mercury isotope 198 (0-546.2271 mm in vacuum): When passing through 200.000 mm length of sucrose solution in pure water , kept at a temperature of 20.00"C, and containing 26.0160 g, weighed in a vacuum of pure sucrose per 100.000 cm of solution 'normal' sugar solution. A mass of 26.0160 g of sucrose corresponds to 26.000 g when this sucrose is weighed in air by means of weights with a density of 8000 kglm" in air, at a standard pressure of 101325 Pascal, at a temperature of 209C ad a relative humidity of 50%, the density of this air therefore being 1.2 kglm".

5 · ph is the logarithm to the base 10 of the inverse of the hydrogen ion concentration in a dilute ionic solution.