水的色度是对天然水或处理后的各种水进行颜色定量测定时的指标。天然水经常显示出浅黄、浅褐或黄绿等不同的颜色。产生颜色的原因是由于溶于水的腐殖质、有机物或无机物质所造成的。另外，当水体受到工业废水的污染时也会呈现不同的颜色。这些颜色分为真色与表色。真色是由于水中溶解性物质引起的，也就是除去水中悬浮物后的颜色。而表色是没有除去水中悬浮物时产生的颜色。这些颜色的定量程度就是色度。色度是测定是用铂钴标准比色法，亦即用氯铂酸钾（K2PtCl6）和氯化钴（CoCl2?6H2O）配制成测色度的标准溶液，

SIEMENS 6ES5-526-3LF11  6ES55263LF11
SIEMENS 6AV7-613-0AB10-0BF0  6AV76130AB100BF0
SIEMENS 6AV1-242-0AB00  6AV12420AB00
RELIANCE ELECTRIC T18R1105T-TX  T18R1105TTX
RELIANCE ELECTRIC 86466-59S  8646659S
RELIANCE ELECTRIC 86466-2T  864662T
RELIANCE ELECTRIC 800082-1R  8000821R
RELIANCE ELECTRIC 78469-1R  784691R
RELIANCE ELECTRIC 3RA2008U  3RA2008U
RELIANCE ELECTRIC 3RA2008  3RA2008
RELIANCE ELECTRIC 25V4160  25V4160
RELIANCE ELECTRIC 132AS-B660F-21-K6  132ASB660F21K6
RELIANCE ELECTRIC 0-55325-28  05532528
RELIANCE ELECTRIC 0-52002-1  0520021
RELIANCE ELECTRIC 01KS504852B-EA  01KS504852BEA
ORMEC MAC-B110E/K1A  MACB110EK1A
OMRON ITNCEIX01DRM  ITNCEIX01DRM
MOORE PRODUCTS 15825-36  1582536
MOORE PRODUCTS 15825-35  1582535
MOORE PRODUCTS 15825-34  1582534
MOORE PRODUCTS 15825-32  1582532
MODICON PC-L984-785  PCL984785
MODICON AS-P230-080  ASP230080
MODICON AS-C484-264  ASC484264
MODICON 140-CPU-424-02  140CPU42402
MITSUBISHI HCSF502BK  HCSF502BK
MITSUBISHI HC-H702S-A42  HCH702SA42
MITSUBISHI FR-A740-75K  FRA74075K1
MITSUBISHI A4UMCA-128  A4UMCA128
MITSUBISHI A2U-CPU-S1  A2UC1
MATROX GEN/P/16/8/STD  GENP168STD
MARPOSS 882I330930  882I330930
LEXIUM BPH1902N F2CA1  BPH1902N F2CA1
LANDIS & GYR 562-002  562002
KUKA PM6-600  PM6600
KOLLEN IND BDS -220-01010-604A-2-020  BDS 22001010604
KEARNEY & TRECKER 1-2197701  12197701
ITE SIEMENS W3MM3200U  W3MM3200U
ITE SIEMENS HFC227NR  HFC227NR
INDRAMAT TDM1-2-050-W1  TDM12050W1
INDRAMAT MDD112B-N-040-N2L-130PA0  MDD112BN040N2L13
INDRAMAT MDD093C-N-030-N2M-110PA1  MDD09030N2M12
INDRAMAT MDD093C-N-030-N2L-110GA2  MDD09030N2L1A
INDRAMAT MAC90C-0-G-4C/110-A-1/W1520/S01  MAC90C0G4C110A1W
INDRAMAT HDS03.2-W100N-HA01-01-F  HDS032W100NHA011
INDRAMAT DKS1.1-W030B-DA01-00  DKS11W030BDA0100
INDRAMAT DKC1.1-030-3-FW  DKC110303FW
INDRAMATD01.1KE19-01FW D011KE1901FW
INA PR14182  PR14182
IDM CONTROLS CIMR-P5U2037  CIMRP5U2037
HUNKAR LABS 315-0  3150
HOLZMA STG-19/GN  STG19GN
HEWITT INTRIES 6623A  6623A
HARMONIC DRIVE 472448-1  4724481
GIDDINGS & LEWIS 502-03814-40R1  5020381440R1
GETTYS M236-H60A-300S  M236H60A300S
GETTYS 110-135  110135
GENERAL ELECTRIC IS200VCRCH1ABA  IS200VCRCH1ABA
GENERAL ELECTRIC DS3820MSAB1A1A  DS3820MSAB1A1A
GENERAL ELECTRIC DS3820AIRA1A1A  DS3820AIRA1A1A
GENERAL ELECTRIC DS3810MMAC  DS3810MMAC
GENERAL ELECTRIC DS3800NRTB1A  DS3800NRTB1A
GENERAL ELECTRIC DS3800HSAA1U1N  DS3800HSAA1U1N
GENERAL ELECTRIC DS3800HLNC1A1A  DS3800HLNC1A1A
GENERAL ELECTRIC 9F62KED300  9F62KED300
GENERAL ELECTRIC 7486D52G3  7486D52G3
GENERAL ELECTRIC 7486D52G2  7486D52G2
GENERAL ELECTRIC 7486D52G1  7486D52G1
GENERAL ELECTRIC 5BPA56RAG8  5BPA56RAG8
GENERAL ELECTRIC 531X210DMCAMM1  531X210DMCAMM1
GENERAL ELECTRIC 36C774353AAG01  36C774353AAG01
GENERAL ELECTRIC 142D7274G2  142D7274G2
GENERAL ELECTRIC 0786E201P1G0001  0786E201P1G0001
GENERAL ELECTRIC 0621L0429-G001  0621L0429G001
GENERAL ELECTRIC 04019J47G0001  04019J47G0001
GENERAL ELECTRIC 04019J46G0001  04019J46G0001
GE FUJI 6KDV3224Q2B20  6KDV3224Q2B20
GE FANUC IC646MPP101 FNFP IC646MPP101
GE FANUC IC3600SLEH1G1  IC3600SLEH1G1
FOXBORO 3C-A  3CA
FOXBORO 135B  135B
FISCHER & PORTER 43210A  43210A
FANUC UCE570T-TCP1  UCE570TTCP1
FANUC A20B-0002-0943  A20B00020943
FANUC A16B-1000-0010  A16B10000010
FANUC A06B-6050-C401  A06B6050C401
FANUC A06B-6047-H203  A06B6047H203
FANUC A06B-6047-H202  A06B6047H202
FANUC A06B-6047-H004  A06B6047H004
FANUC A06B-6035-H422  A06B6035H422
FANUC A06B-0602-B032  A06B0602B032
FANUC A06B-0590-B205  A06B0590B205
FANUC A06B-0521-B041  A06B0521B041
FANUC A06B-0501-B751  A06B0501B751
FANUC A06B-0312-B351  A06B0312B351
FANUC A06B-0186-B675  A06B0186B675
ELECTRON MACHINE MPRESCAN  MPRESCAN
DATALOGIC DX8200-2100  DX82002100
DANFOSS FC-102P15KT2P21H2XGXXXXSXXXXAXBXCXXXXDX  FC102P15KT2P21H2
CUTLER HAMMER WCBO6F  WCBO6F
CUTLER HAMMER SVX030A1-2A1N2  SVX030A12A1N2
CUTLER HAMMER PX4051A5BA  PX4051A5BA
CUTLER HAMMER 7685T-15OD  7685T15OD
CUTLER HAMMER 7585T-8XE  7585T8XE
CUTLER HAMMER 1C17653G05  1C17653G05
CLEVELAND MOTION CONTROL X44-30289  X4430289
BUTLER AUTOMATIC DC23941-504  DC23941504
BRANSON 943D  943D
规定1升水中含有 2.419毫克的氯铂酸钾和2.00毫克氯化钴时，将铂（Pt）的浓度为每升1毫克时所产生的颜色深浅定为1度（1。）。水色度往往会影响造纸、纺织等工业产品的质量。各种用途的水对于色度都有一定的要求：如生活用水的色度要求小于15；造纸工业用水的色度要求小于15～30；纺织工业的用水色度要求小于10～12；染色用水的色度要求小于5。工业废水可能使水体产生各种各样的颜色，但水中腐殖持、悬浮泥砂和不溶解矿物质的存在，也会使水带有颜色。例如，粘土能使水带黄色，铁的氧化物会使水变褐色，硫化物能使水呈浅蓝色，藻类使水变绿色，腐败的有机物会使水变成黑褐色等等。
BAILEY CONTROLS IMMFP-02  IMMFP02
ASEA BROWN BOVERI UCA86-D2  UCA86D2
ASEA BROWN BOVERI E3N32FAHOA00EXX  E3N32FAHOA00EXX
ASEA BROWN BOVERI 750191000B  750191000B
ASEA BROWN BOVERI 57088478  57088478
ASEA BROWN BOVERI 069829-001  069829001
ASCO 2063813RVF-125/DC  2063813RVF125DC
ASCO 206-381-3RVF-120  2063813RVF120
ALLEN BRADLEY SA3100-B010-AE-L6R  SA3100B010AEL6R
ALLEN BRADLEY 8520-ETCP  8520ETCP
ALLEN BRADLEY 8500-E1F-K1B  8500E1FK1B
ALLEN BRADLEY 803-A12  803A12
ALLEN BRADLEY 6182-AIAAZC  6182AIAAZC
ALLEN BRADLEY 6182AIAAZA  6182AIAAZA
ALLEN BRADLEY 6157-BADAAZAAZZ  6157BADAAZAAZZ
ALLEN BRADLEY 5370-CVIMC  5370CVIMC
ALLEN BRADLEY 5370-CVIM2BC  5370CVIM2BC
ALLEN BRADLEY 5370-CVIM2  5370CVIM2
ALLEN BRADLEY 505-EOA  505EOA
ALLEN BRADLEY 2760  276
ALLEN BRADLEY 2711-PK12C4D1  2711PK12C4D1
ALLEN BRADLEY 2711-K9A2  2711K9A2
ALLEN BRADLEY 2711E-T14C15  2711ET14C15
ALLEN BRADLEY 2711-B 20  2711B 20
ALLEN BRADLEY 20AD040A3AYNANC0  20AD040A3AYNANC0
ALLEN BRADLEY 2098-DSD-HV220-SE  2098DSDHV220SE
ALLEN BRADLEY 1785-L20C15/F  1785L20C15F
ALLEN BRADLEY 1784-T37AC  1784T37AC
ALLEN BRADLEY 1774-RP3  1774RP3
ALLEN BRADLEY 1771-IR  1771IR
ALLEN BRADLEY 1771-IF04  1771IF04
ALLEN BRADLEY 1756-L61S  1756L61S
ALLEN BRADLEY 150-B54NBDB  150B54NBDB
ALLEN BRADLEY 150-A97NB-NA  150A97NBNA
ALLEN BRADLEY 150-A97NBDB  150A97NBDB
ALLEN BRADLEY 150-A97NBD  150A97NBD
ALLEN BRADLEY 1395-B72-C2-P10-X1  1395B72C2P10X1
ALLEN BRADLEY 1395-B65-D1-P50-X1  1395B65D1P50X1
ALLEN BRADLEY 1392-B075-RH-MC-B-F2  1392B075RHMCBF2
ALLEN BRADLEY 1392-B075-RH-MC-B  1392B075RHMCB
ALLEN BRADLEY 1336VT-B030-EOR-L3-S1  1336VTB030EORL3S
ALLEN BRADLEY 1336T-R003-AA-GT3EN  1336TR003AAGT3EN
ALLEN BRADLEY 1335-DAB-F4-F8  1335DABF4F8
ALLEN BRADLEY 1326AB-B740C-21-MK7L  1326ABB740C21MK7
ALLEN BRADLEY 1326AB-B430E-21-K4L  1326ABB430E21K4L
ALLEN BRADLEY 1326AB-B410G-S2L  1326ABB410GS2L
ADEPT TECH PA-4  PA4
ADEPT TECH 90402-40013/XY-HRS013-S1B1-AD  9040240013XYHRS0
ADEPT TECH 90402-40013  9040240013
ADEPT TECH 30336-31000  3033631000
ADEPT TECH 10330-15350  1033015350
URAY 069829-002  069829002