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Portable DO Meter
VIKING-DO310 Touch screen Portable DO Meter
DO/Temp.(DO Saturation)
Accurate-Powerful
1000 groups data sets
Print, PC
Polarographic
DO Range 0.00 ~ 50.00 mg/L ,
Accuracy ±0.1mg/L
DO Saturation Range (0.0 ~ 300.0)% , Accuracy±2.0%
Temp. Range
-5.0 ~ 110 ºC, 23.0 ~ 230 ºF ,
Accuracy ±0.2More information at Colo Science
SKU: PRO3164
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VIKING-DO210 Portable DO Meter
Reliable-Durable
ATC
Auto-Read, Continuous read
Reading Prompts
200 groups data sets
IP54
Polarographic
DO Range 0.00 ~ 20.00 mg/L , Accuracy ±0.3mg/L
DO Saturation Range (0.0 ~200.0)% , Accuracy±2.0%
Temp. Range -5.0 ~ 110 ºC, 23.0 ~ 230 ºF , Accuracy ±0.2
More information at Colo Science
VIKING-DO310 Touch screen Portable DO Meter
DO/Temp.(DO Saturation)
Accurate-Powerful
1000 groups data sets
Print, PC
Polarographic
DO Range 0.00 ~ 50.00 mg/L ,
Accuracy ±0.1mg/L
DO Saturation Range (0.0 ~ 300.0)% , Accuracy±2.0%
Temp. Range
-5.0 ~ 110 ºC, 23.0 ~ 230 ºF ,
Accuracy ±0.2
More information at Colo Science
VIKING-DO510 Touch screen Portable DO Meter
DO/Temp. (DO Saturation)
Professional-Smart
Touchscreen
1000 groups data sets
Print, PC, Scan gun
Polarographic
DO Range 0.00 ~ 99.99 mg/L ,
Accuracy
±0.3mg/L (0.00 ~ 20.00 mg/L);
±10% (20.00 ~ 99.99 mg/L)
DO Saturation Range
(0.0 ~ 600.0)% , Accuracy±2.0%
Temp. Range
-10 ~ 135 ºC, 14 ~ 275 ºF ,
Accuracy ±0.1
More information at Colo Science
VIKING-DO511 Touch screen Portable DO Meter
DO/Temp. (DO Saturation)
Professional-Smart
Touchscreen
1000 groups data sets
Print, PC, Scan gun
Optical
DO Range 0.00 ~ 20.00 mg/L ,
Accuracy
±0.3mg/L (0.00 ~ 20.00 mg/L)
DO Saturation Range
(0.0 ~ 200.0)% ,
Accuracy±10.0%
Temp. Range 0 ~ 50 ºC ,
Accuracy ±0.2
More information at Colo Science
VIKING-EC200 Benchtop Conductivity Meter
EC/Temp. (TDS)
EC Range 0.000 μS/cm ~ 200 mS/cm ,
Accuracy ±1.0% FS
TDS Range 0.00mg/L ～ 300g/L , Accuracy ±1.0% FS
Temp. Range -5.0 ~ 110 ºC, 23.0 ~ 230 ºF ,
Accuracy ±0.2
Reference Temp. 20, 25 ºC
Calibration Points（1~3)
84μS/cm, 1413μS/cm, 12.88mS/cm
Standard Recognition
VIKING-EC300 Laboratory Conductivity Meter
EC/Temp. (Resistivity/ TDS/Sal.)
EC Range 0.000 μS/cm ~ 1000 mS/cm ,
Accuracy ±1.0% FS
Resistivity Range 5.00 Ω·cm ～ 20.00 MΩ·cm ,
Accuracy ±1.0% FS
TDS Range 0.00mg/L ～ 300g/L , Accuracy ±1.0% FS
Salinity Range (0.00 ～ 8.00)% , Accuracy ±0.2%
Temp. Range -5.0 ~ 110 ºC, 23.0 ~ 230 ºF ,
Accuracy ±0.2
Reference Temp. 20, 25 ºC
Calibration Points（1~3)
84μS/cm, 1413μS/cm, 12.88mS/cm
Standard Recognition
VIKING-EC400 Laboratory Conductivity Meter
EC/Temp. (Resistivity/ TDS/Sal.)
EC Range 0.000 μS/cm ~ 1000 mS/cm ,
Accuracy ±0.5% FS
Resistivity Range 5.00 Ω·cm ～ 100.00 MΩ·cm ,
Accuracy ±0.5% FS
TDS Range 0.00mg/L ～ 1000g/L , Accuracy ±0.5% FS
Salinity Range (0.00 ～ 8.00)% , Accuracy ±0.1%
Temp. Range -10 ~ 135 ºC, 14 ~ 275 ºF , Accuracy ±0.1
Reference Temp. 20, 25 ºC
Calibration Points（1~3)
84μS/cm, 1413μS/cm, 12.88mS/cm
Standard Recognition
VIKING-EC500 Laboratory Conductivity Meter
EC/Temp. (Resistivity/ TDS/Sal.)
EC Range 0.000 μS/cm ~ 2000 mS/cm , Accuracy ±0.5% FS
Resistivity Range 5.00 Ω·cm ～ 100.00 MΩ·cm , Accuracy ±0.5% FS
TDS Range 0.000 ～ 1000 g/L, Accuracy ±0.5%FS
Salinity Range (0.00 ～ 8.00)% , Accuracy ±0.1%
Temp. Range -10 ~ 135 ºC, 14 ~ 275 ºF , Accuracy ±0.1
VIKING-EC310T Portable EC/Resistivity/Temp/TDS/Sal/
Electro Conductivity Range
EC Range 0.000 μS/cm ~ 1000 mS/cm ,
Accuracy ±0.5% FS
Resistivity Range 5.00 Ω·cm ～ 20.00 MΩ·cm ,
Accuracy ±0.5% FS
TDS Range 0.000mg/L ～ 300g/L ,
Accuracy ±0.5% FS
Salinity Range (0.00 ～ 8.00)% , Accuracy ±0.1%
Temp. Range -5.0 ~ 110 ºC, 23.0 ~ 230 ºF ,
Accuracy ±0.2
VIKING-EC600 Conductivity Meter
EC/Temp. (Resistivity/ TDS/Sal.)
EC Range 0.000 μS/cm ~ 3000 mS/cm ,
Accuracy ±0.5%FS
Resistivity Range 5.00 Ω·cm ～ 100.00 MΩ·cm ,
Accuracy ±0.5%FS
TDS Range 0.000 mg/L ～ 1000 g/L , Accuracy ±0.5%FS
Salinity Range (0.00 ～ 8.00)% , Accuracy ±0.1%
Temp. Range -5 ~ 130 ºC , Accuracy ±0.1
VIKING-EC510 Portable EC/Resistivity/Temp/TDS/Sal/
Electro Conductivity Range
EC Range 0.000 μS/cm ~ 3000 mS/cm ,
Accuracy ±0.5% FS
Resistivity Range 5.00 Ω·cm ～ 100.00 MΩ·cm ,
Accuracy ±0.5% FS
TDS Range 0.000 ～ 1000 g/L ,
Accuracy ±0.5%FS
Salinity Range (0.00 ～ 8.00)% , Accuracy ±0.1%
Temp. Range -10 ~ 135 ºC, 14 ~ 275 ºF ,
Accuracy ±0.1
VIKING-PH110 Portable pH (mV) Meter MTC
pH composite electrode
NIST pH standard solution(4.01,7.00, 10.01) ， 50ml/vial
Electrode holder
Silicone rubber case
Wristbands
pH Range -0.00 ~ 14.00 ,
Accuracy ±0.03 pH
mV Range -1400 ~ 1400 mV ,
Accuracy ±0.2%F
Calibration Points（1~2）
NIST Standard Recognition
Packing Include:
pH composite electrode
NIST pH standard solution(4.01,7.00, 10.01) 50ml/vial
Electrode holder
Silicone rubber case
Wristbands
VIKING-PH310F Portable pH/Temp (mV) with 3 in 1 Electrode
Accurate-Powerful
Auto-Read (Fast, Medium,
Slow), Timed-Read, Continuous-read
GLP Features
500 groups data sets
Print, PC
Packing include:
3 in 1 pH composite electrode
NIST pH standard solution(4.01,7.00, 10.01) ， 50ml/vial
Electrode holder
Silicone rubber case
Wristbands
Carrying Case
VIKING-PH310T Portable pH/Temp (mV) with 3 in 1 Electrode
Accurate-Smart
Touchscreen
1000 groups data sets
Print, PC
Packing include:
3 in 1 pH composite electrode
NIST pH standard solution(4.01,7.00, 10.01)， 50ml/vial
Electrode holder
Silicone rubber case
Wristbands
Touch pen
Carrying Case
Popular Products
VIKING-DO210 Portable DO Meter
Reliable-Durable
ATC
Auto-Read, Continuous read
Reading Prompts
200 groups data sets
IP54
Polarographic
DO Range 0.00 ~ 20.00 mg/L , Accuracy ±0.3mg/L
DO Saturation Range (0.0 ~200.0)% , Accuracy±2.0%
Temp. Range -5.0 ~ 110 ºC, 23.0 ~ 230 ºF , Accuracy ±0.2
More information at Colo Science
VIKING-DO310 Touch screen Portable DO Meter
DO/Temp.(DO Saturation)
Accurate-Powerful
1000 groups data sets
Print, PC
Polarographic
DO Range 0.00 ~ 50.00 mg/L ,
Accuracy ±0.1mg/L
DO Saturation Range (0.0 ~ 300.0)% , Accuracy±2.0%
Temp. Range
-5.0 ~ 110 ºC, 23.0 ~ 230 ºF ,
Accuracy ±0.2
More information at Colo Science
VIKING-DO510 Touch screen Portable DO Meter
DO/Temp. (DO Saturation)
Professional-Smart
Touchscreen
1000 groups data sets
Print, PC, Scan gun
Polarographic
DO Range 0.00 ~ 99.99 mg/L ,
Accuracy
±0.3mg/L (0.00 ~ 20.00 mg/L);
±10% (20.00 ~ 99.99 mg/L)
DO Saturation Range
(0.0 ~ 600.0)% , Accuracy±2.0%
Temp. Range
-10 ~ 135 ºC, 14 ~ 275 ºF ,
Accuracy ±0.1
More information at Colo Science
VIKING-DO511 Touch screen Portable DO Meter
DO/Temp. (DO Saturation)
Professional-Smart
Touchscreen
1000 groups data sets
Print, PC, Scan gun
Optical
DO Range 0.00 ~ 20.00 mg/L ,
Accuracy
±0.3mg/L (0.00 ~ 20.00 mg/L)
DO Saturation Range
(0.0 ~ 200.0)% ,
Accuracy±10.0%
Temp. Range 0 ~ 50 ºC ,
Accuracy ±0.2
More information at Colo Science
VIKING-EC200 Benchtop Conductivity Meter
EC/Temp. (TDS)
EC Range 0.000 μS/cm ~ 200 mS/cm ,
Accuracy ±1.0% FS
TDS Range 0.00mg/L ～ 300g/L , Accuracy ±1.0% FS
Temp. Range -5.0 ~ 110 ºC, 23.0 ~ 230 ºF ,
Accuracy ±0.2
Reference Temp. 20, 25 ºC
Calibration Points（1~3)
84μS/cm, 1413μS/cm, 12.88mS/cm
Standard Recognition
VIKING-EC300 Laboratory Conductivity Meter
EC/Temp. (Resistivity/ TDS/Sal.)
EC Range 0.000 μS/cm ~ 1000 mS/cm ,
Accuracy ±1.0% FS
Resistivity Range 5.00 Ω·cm ～ 20.00 MΩ·cm ,
Accuracy ±1.0% FS
TDS Range 0.00mg/L ～ 300g/L , Accuracy ±1.0% FS
Salinity Range (0.00 ～ 8.00)% , Accuracy ±0.2%
Temp. Range -5.0 ~ 110 ºC, 23.0 ~ 230 ºF ,
Accuracy ±0.2
Reference Temp. 20, 25 ºC
Calibration Points（1~3)
84μS/cm, 1413μS/cm, 12.88mS/cm
Standard Recognition
VIKING-EC400 Laboratory Conductivity Meter
EC/Temp. (Resistivity/ TDS/Sal.)
EC Range 0.000 μS/cm ~ 1000 mS/cm ,
Accuracy ±0.5% FS
Resistivity Range 5.00 Ω·cm ～ 100.00 MΩ·cm ,
Accuracy ±0.5% FS
TDS Range 0.00mg/L ～ 1000g/L , Accuracy ±0.5% FS
Salinity Range (0.00 ～ 8.00)% , Accuracy ±0.1%
Temp. Range -10 ~ 135 ºC, 14 ~ 275 ºF , Accuracy ±0.1
Reference Temp. 20, 25 ºC
Calibration Points（1~3)
84μS/cm, 1413μS/cm, 12.88mS/cm
Standard Recognition
VIKING-EC500 Laboratory Conductivity Meter
EC/Temp. (Resistivity/ TDS/Sal.)
EC Range 0.000 μS/cm ~ 2000 mS/cm , Accuracy ±0.5% FS
Resistivity Range 5.00 Ω·cm ～ 100.00 MΩ·cm , Accuracy ±0.5% FS
TDS Range 0.000 ～ 1000 g/L, Accuracy ±0.5%FS
Salinity Range (0.00 ～ 8.00)% , Accuracy ±0.1%
Temp. Range -10 ~ 135 ºC, 14 ~ 275 ºF , Accuracy ±0.1
VIKING-EC310T Portable EC/Resistivity/Temp/TDS/Sal/
Electro Conductivity Range
EC Range 0.000 μS/cm ~ 1000 mS/cm ,
Accuracy ±0.5% FS
Resistivity Range 5.00 Ω·cm ～ 20.00 MΩ·cm ,
Accuracy ±0.5% FS
TDS Range 0.000mg/L ～ 300g/L ,
Accuracy ±0.5% FS
Salinity Range (0.00 ～ 8.00)% , Accuracy ±0.1%
Temp. Range -5.0 ~ 110 ºC, 23.0 ~ 230 ºF ,
Accuracy ±0.2
VIKING-EC600 Conductivity Meter
EC/Temp. (Resistivity/ TDS/Sal.)
EC Range 0.000 μS/cm ~ 3000 mS/cm ,
Accuracy ±0.5%FS
Resistivity Range 5.00 Ω·cm ～ 100.00 MΩ·cm ,
Accuracy ±0.5%FS
TDS Range 0.000 mg/L ～ 1000 g/L , Accuracy ±0.5%FS
Salinity Range (0.00 ～ 8.00)% , Accuracy ±0.1%
Temp. Range -5 ~ 130 ºC , Accuracy ±0.1
VIKING-EC510 Portable EC/Resistivity/Temp/TDS/Sal/
Electro Conductivity Range
EC Range 0.000 μS/cm ~ 3000 mS/cm ,
Accuracy ±0.5% FS
Resistivity Range 5.00 Ω·cm ～ 100.00 MΩ·cm ,
Accuracy ±0.5% FS
TDS Range 0.000 ～ 1000 g/L ,
Accuracy ±0.5%FS
Salinity Range (0.00 ～ 8.00)% , Accuracy ±0.1%
Temp. Range -10 ~ 135 ºC, 14 ~ 275 ºF ,
Accuracy ±0.1
VIKING-PH110 Portable pH (mV) Meter MTC
pH composite electrode
NIST pH standard solution(4.01,7.00, 10.01) ， 50ml/vial
Electrode holder
Silicone rubber case
Wristbands
pH Range -0.00 ~ 14.00 ,
Accuracy ±0.03 pH
mV Range -1400 ~ 1400 mV ,
Accuracy ±0.2%F
Calibration Points（1~2）
NIST Standard Recognition
Packing Include:
pH composite electrode
NIST pH standard solution(4.01,7.00, 10.01) 50ml/vial
Electrode holder
Silicone rubber case
Wristbands
VIKING-PH310F Portable pH/Temp (mV) with 3 in 1 Electrode
Accurate-Powerful
Auto-Read (Fast, Medium,
Slow), Timed-Read, Continuous-read
GLP Features
500 groups data sets
Print, PC
Packing include:
3 in 1 pH composite electrode
NIST pH standard solution(4.01,7.00, 10.01) ， 50ml/vial
Electrode holder
Silicone rubber case
Wristbands
Carrying Case
VIKING-PH310T Portable pH/Temp (mV) with 3 in 1 Electrode
Accurate-Smart
Touchscreen
1000 groups data sets
Print, PC
Packing include:
3 in 1 pH composite electrode
NIST pH standard solution(4.01,7.00, 10.01)， 50ml/vial
Electrode holder
Silicone rubber case
Wristbands
Touch pen
Carrying Case