Unit 6&7, Crittal Court, Crittall Drive
Springwood Ind. Est. Braintree
Essex, CM7 2SE, UK
+44(0)1376 340 456

Mono Ion Selective Electrodes

Mono Ion Selective Electrodes

Description

Require a Separate Reference Electrode – (see chart)

The SENTEK range of standard mono ion selective electrodes are ideal for applications where high accuracy is required, particularly where ion levels are low (<1ppm)

Selection Table

Order No. Desc. Conc.
(Mol/L)
Limits
(ppm)
Temp
Range
°C
Ref
Elec.
Main
Interference’s
pH
Range
ISAB
334-75 Ammonium (NH4+) 10-1 – 10-6M 0.02 0 – 50 R2 K+=1.2×10-1, Na+2.0×10-3, Mg2+=2.0×10-4 5 – 8 4M LiAC
312-75 Barium (Ba2+) 1M-5 x 10-6M 10 0 – 50 R2 Na+=4×10-4, K+=9×10-3, Ca2+= 2.5×10-2 5 – 9 4M LiAC
302-75 Bromide (Br) 1M-5 x 10-6M 0.4 0 – 80 R2 I-, S2-, CN- must be absent, OH-=3 x 10-5, Cl-=2.4×10-2 2 – 12 5M NaNO3
309-75 Cadmium (Cd2+) 10-1 – 10-6M 0.2 0 – 80 R1 Ag+, Hg2+, Cu2+ <-7M 3 – 7 5M NaNO3
310-75 Calcium (Ca2+) 1M-5 x 10-7M 0.02 0 – 50 R2 Mg2+, Ba2+, Pb2+, Zn2+, Na+ 4 – 9 4M KCl
301-75 Chloride (Cl-) 1M-5 x 10-5M 1.8 0 – 80 R2 Br, I-, CN- must be absent, S2- must be less than 10-7M 2 – 11 5M NaNO3
306-75 Copper (Cu2+) 1M-5 x 10-6M 0.3 0 – 80 R2 S2-, Ag+, Hg2+ should be absent, Cl, Br interfere 0 – 7 5M NaNO3
304-75 Cyanide (CN-) 10-2 – 10-6M 0.03 0 – 80 R2 S2-, must be, <10-7M, -=1.0 10 – 14 5M NaOH
333-75 Fluoride (F) 1M-5 x 10-7M 0.01 0 – 80 R1 OH- = 10-1 4 – 8 TISAB
303-75 Iodide (I-) 1M – 10-7M 0.02 0 – 80 R2 S2-=10-1 must be <10-7M/CN=1.0 3 – 12 5M NaNO3
307-75 Lead (Pb2+) 10-1-5 x 10-6M 1.0 0 – 80 R2 S2-, Ag+, Hg2+ should be absent, Cd2+, Cu2+, Fe3+, interfere 0 – 9 5M KNO3
311-75 Nitrate (NO3-) 1M-5 x 10-6M 0.08 0 – 50 R2 Cl, NO2-, Br, SO42-, F-, ClO3-, ClO4- 3 – 10 1M KH2PO4
314-75 Potassium (K+) 1M-10-6M 0.04 0 – 50 R2 Na+, Ca2+, Rb+, Mg2+, Cs+, NH4+ 4 – 9 TEAC
308-75 Silver (Ag+) 1M-10-7M 0.01 0 – 80 R2 S2-, Hg2+, must be absent 2 – 9 5M NaNO3
315-75 Sodium (Na+) Sat. -10-6M 1ppb -5 – +70 R2 Li+, K+, NH4+/Ag should be absent 2 – 12 SISAB
305-75 Sulphide (S2+) 1M-10-7M 0.003 0 – 80 R1 Hg2+, Ag+ must be absent 12 – 14 SAOB

Sentek pH sensor

 

pH, Conductivity & Reference Electrodes

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Units 6 & 7, Crittal Court,
Crittall Drive
Springwood Ind. Est
Braintree
ESSEX CM7 2SE
United Kingdom
+44(0)1376 340 456
sales@sentek.co.uk

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