离子选择电极

电极类型

测量范围

温度/pH值范围

干扰离子

温度

热敏电阻

氨离子(NH₄⁺)

PVC membrane

5&tiMES;10^-6to  10^-1M

(0.1 to 1800  ppm)

0 to 35℃/4  to 10

K⁺

钙离子(Ca⁺²)

PVC membrane

1×10^-5  to 10^-1M

(0.4 to 4000  ppm)

0 to 35℃/3  to 10

Pb⁺²,  Hg⁺², Cu⁺², Ni⁺²

二氧化碳/碳酸根(CO_2/CO₃^-2)

Gas sensing

5×10^-5  to 10^-2M

(2.2 to 440  ppm)

0 to 35℃/4.8  to 5.2

Volatile weak acids

氯离子(Cl^-)
 

Solid-state

5×10^-7 to 10^-2M

(0.018 to 355  ppm)

0 to 35℃/2 to 12

S^-2,I^-,CN^-, Br^-,OH^-, NH₃, S₂O₃^-2

余氯

Solid-state

0~10mg/L

0 to 35℃

氟离子(F^-)

Solid-state

10^-6 to saturated

(0.02 to  saturated)

0 to 35℃/5 to 8

OH^-

硝酸根  (NO₃^-)

PVC membrane

5×10^-5 to 1.0 M

(3.1 to 62000 ppm)

0 to 35℃/2.5 to 11

ClO₄^-, I^-, CN^-, BF₄^-

pH (H⁺)

PVC membrane

6.0 to 9.0 pH

0 to 35℃

钾离子(K⁺)
 

PVC membrane

5×10^-6to 1.0 M

(0.195 to 39000 ppm)

0 to 35℃/2 to 12

Cs⁺, NH₄⁺

铁离子Fe⁺³

PVC membrane

7×10^-6to 10^-2M

(0.4 to 560 ppm)

0 to35℃/1 to 3

钠离子 (Na⁺)

Glass

membrane

10^-6M to saturated

(0.02 ppm to saturated)

0 to 35℃/5 to 12

H⁺,K⁺, Li⁺,Ag⁺,Cs⁺, TI⁺

钙镁离子(Ca⁺²/Mg⁺²)

PVC membrane

5×10^-5  to 10^-1   M

(2 to 4000  ppm as Ca⁺²)

0 to 35℃/5  to 10

Cu⁺², Zn⁺², Ni⁺², Fe⁺²

氧化还原ORP

Solid

-900 to 900mV

0 to 35℃/5  to 10

溶氧(DO)

Solid

0~400%saturation

0.01~20mg/L

0 to 40℃/2  to 12

浊度

90度散射法

0~100,2000,10000 NTU

悬浮物

90度散射法

1mg/L以上到100%

电阻率

Graphite/Glass

0.002~100ms/cm

0 to 35℃

盐度

双脉冲电

0.00001~5

0 to 35℃

电导率

Graphite/Glass

0.002~100ms/cm

0 to 35℃