Standard sized pH & ION Electrodes
Combination pH & REDOX electrodes
ION Selective Electrodes
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COMBINATION pH & REDOX ELECTRODES
Dimension (Ref.type)
Description pH Temp.C L x D Cat. #
Flat Bulb Combination pH Electrode Ag/AgCl
(polymer body). 12mm flat bulb 0-12 0-80 110x12 1112
combination with an epoxy body. For
pH determination on flat surfaces Calomel
such as skin, paper, culture media, 0-12 0-80 110x12 1113
hair and other surfaces.
Rugged Combination pH Electrode Ag/AgCl
(polymer body). High-impact epoxy 0-13 0-100 110x12 1015
sheath protecting all glass parts
from breakage. For all around lab
and field use.
Rugged Combination pH Electrode/ Ag/AgCI
Removable Cap (polymer body). 0-13 0-100 110x12 1115
This robust combination is designed
for use where tough handling is the
norm and ease of cleaning the
sensing tip is necessary. The
protective tip is removable for
cleaning.
Puncture Tip Combination pH Ag/AgCl
Electrode (glass body). 0-13 0-100 75x8 1215
Puncture tip combination pH
electrode specially designed
with a rugged needle shaped
pH sensitive membrane, suited
for measurement in cheese,
fruit, leather, meat, etc.
All Glass Soil pH Electrode Calomel
(glass body). 12mm Soil pH 0-12 0-100 110x12 1315
electrode. This electrode is
specially designed for soil
pH measurement with its tough
pH bulb.
Semi Micro Combination pH Electrode Calomel
(glass body). Small 4mm all glass 0-12 -5-80 130x4 1415
combination for use in small
sampling areas, such as semi-micro Calomel
cuvette and NMR tubes. Recommended 0-12 -5-80 180x4 1416
for use with tris buffers.
Low Resistance pH Electrode Ag/AgCl
(glass body). 12mm combination 0-12 0-100 110x12 1325
electrode for routing pH
measurements. Provides good Calomel
stability with its annular 0-12 -6-80 110x12 1326
ceramic junction and is specially
suitable for measurements in low
conductivity solutions such as
distilled or high purity water,
emulsions or in suspensions
with high contents of suspended
particles.
Dimen. Int.Ref.
Description pH Temp.øC L x D Cat. #
Double junction combination pH
Electrode (glass body-sealed).
For use in solutions where
chloride, mercury, or silver
could lead to contamination of dbl.
solution being measured or junc.
clogging of ref. junction. 0-13 0-110 110x12 1335
Double Junction Combination pH dbl.
Electrode (glass body-refillable). junc.
Same as above but refillable. 0-13 0-110 110x12 1336
Rapid Renew Reference Junction pH
Electrode (glass body-refillable).
Electrode comes with spring loaded
cap that can be used to rapidly
flush old reference solution and Calomel
form new reference junction. 0-13 5-80 110x12 1525
Rapid Renew Reference Junction pH
Electrode (glass body-refillable).
Same as above with Ag/AgCl Ag/AgCl
internal reference. 0-13 0-100 110x12 1526
Extra long and thin Comb. pH
Electrode (epoxy body-sealed).
Extra long rugged combination
pH electrode for reaching into
those tight spots in long Ag/AgCl
necked flasks etc. 0-13 0-80 300x6 1425
Extra long and thin Comb. pH
Electrode (epoxy body-sealed).
Same as above with calomel Calomel
internal reference element. 0-13 -5-80 300x6 1426
ORP Redox Combination Electrode
(epoxy body-sealed). Redox probe
is ideal for measurements of
oxidation reduction potential in
many different types of solutions.
Electrode features platinum Ag/AgCl
band metallic sensor. ---- 0-110 110x12 1513
Lazar has many more glass body and epoxy body pH electrodes both
in the mono and combination formats. We can also custom make
electrodes to your specific requirements.
Please contact us via email, fax or toll free number for further details.
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ION Selective Electrodes
Simplify your chemical analysis with these electrodes
Features
*High Sensitivity. Most ions can be measured to below 1
ppm. Some ions such as copper (+2) can be measured down to
the low part per billion range.
*Resistant Body. Makes electrodes usable in acids, bases
and some solvents.
*Portable. On-the-spot field measurements can be made
without a trip back to the laboratory.
*Small Samples. Measures samples as small as 5 ml.
*Quick and Simple Readings. The electrodes can be used with
any portable or laboratory pH/millivolt meter.
*Direct Plug. Our electrodes plug directly into your
pH/millivolt meter. No compatibility problems.
Lazar Electrode Company offers a wide range of Ion Selective
Electrodes including
1. Polymer membrane electrodes consist of various ion-
exchange materials in an inert matrix such as PVC,
polyethylene or silicone rubber. After the membrane is
formed, it is sealed to the end of a PVC tube. The
potential developed at the membrane surface is related to
the concentration of the species of interest. Electrodes
of this type include potassium, calcium and nitrate.
2. Solid state electrodes utilize relatively insoluble
inorganic salts in a membrane. Solid state electrodes
exist in homogeneous or heterogeneous forms. In both
types, potentials are developed at the membrane surface
due to the ion-exchange process. Examples include
silver/sulfide, chloride and fluoride.
3. Gas sensing electrodes are available for the measurement
of ammonia, carbon dioxide, nitrogen oxide and sulfur
dioxide. These electrodes have a gas permeable membrane
and an internal buffer solution. The pH of the buffer
solution changes as the gas reacts with it. The change is
detected by a combination pH sensor within the housing.
Due to the construction, gas sensing electrodes do not
require an external reference electrode.
4. Glass membrane electrodes are formed by the doping of the
silicon dioxide glass matrix with various chemicals. The
most common of the glass membrane electrodes is the pH
electrode. Glass membrane electrodes are also available
for the measurement of sodium ions.
Reference Electrodes
Ion Selective Electrodes are available as half-cells (mono) or
as glass or epoxy combination electrodes. Measurements with
half-cell electrodes require the use of an additional reference
electrode. (Gas sensing electrodes are combination electrodes
and do not require a reference electrode).
5771427 Glass Annular Ceramic
5771405 Glass Glass Sleeve
5731428 Epoxy Single Junction, Annular Sleeve
5731429 Epoxy Double Junction, Annular Sleeve
All Combination Electrodes and Sensor Half-cells are available
with choice of connectors. Specify cable length when ordering.
ELECTRODE SPECIFICATION: CHART # 1
Measurement
Electrode Cat. No. Sensor Type Range: Molar
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Ammonia Gas-sensing
(NH3) IS-NH31501 Comb. 1.0 to 5exp-7
Ammonium IS-NH41501 Mono 1.0 to 5exp-6
(NH4+) IS-NH41502 Comb.
Bromide IS-BRO1501 Mono 1.0 to 5exp-6
(Br-) IS-BRO1502 Comb.
Cadmium IS-CD21501 Mono 1exp-1 to 1exp-7
(Cd+2) IS-CD21502 Comb.
Calcium IS-CAL1501 Mono 1.0 to 5exp-6
(Ca+2) IS-CAL1502 Comb.
Carbon
Dioxide (CO2)
Carbonate Gas-sensing
(CO3+2) IS-CO21501 Comb. 1exp-2 to 1exp-4
Chloride IS-CLO1501 Mono 1.0 to 5exp-5
(Cl-) IS-CLO1502 Comb.
Chloride IS-LCL1501 Mono 1.0 to 5exp-6
(Cl-) IS-LCL1502 Comb.
Copper IS-CUO1501 Mono 1exp-1 to 1exp-8
(Cu+2) IS-CUO1502 Comb.
Cyanide IS-CNO1501 Mono 1exp-2 to 5exp-6
(CN-) IS-CNO1502 Comb.
Fluoride IS-FOO1501 Mono Saturated to
(F-) IS-FOO1502 Comb. 1exp-6
Fluoroborate IS-BF41501 Mono 1.0 to 6exp-6
(BF4-) IS-BF41502 Comb.
Iodide IS-IOO1501 Mono 1.0 to 5exp-8
(I-) IS-IOO1502 Comb.
Lead IS-PB21501 Mono 1exp-1 to 1exp-6
(Pb+2) IS-PB21502 Comb.
Lithium IS-LIT1501 Mono 1.0 to 1exp-5
(Li+) IS-LIT1502 Comb.
Nitrate IS-NO31501 Mono 1.0 to 7exp-6
(No3-) IS-NO31502 Comb.
Nitrogen Gas-sensing 5exp-3 to
Oxide (NOx) IS-NOX1501 Comb. 5exp-6
Perchlorate IS-PER1501 Mono 1.0 to 7exp-6
(ClO4-) IS-PER1502 Comb.
pH (H+) IS-LPH1501 Mono 1exp-1 to 1exp-7
Potassium IS-KOO1501 Mono 1.0 to 1exp-6
(K+) IS-KOO1502 Comb.
Silver Sulfide IS-AGS1501 Mono Ag+=1.0 to 1exp-7
(Ag+/S-2) IS-AGS1502 Comb. S-2+1.0 to 1exp-7
Sodium IS-NA71501 Mono Saturated to
(Na+) IS-NA71502 Comb. 1exp-6
Sodium IS-LNA1501 Mono 1.0 to 1exp-5
(Na+) IS-LNA1502 Comb.
Sulfur Gas-sensing
Dioxide (SO2) IS-SO21501 Comb. 5exp-3 to 5exp-6
Surfactant IS-SUR1501 Mono 5exp-2 to 1exp-5
(X+, X-) IS-SUR1502 Comb.
Thiocyanate IS-SCN1501 Mono 1.0 to 5exp-6
(SCN-) IS-SCN1502 Comb.
Water
Hardness IS-WHA1501 Mono 1.0 to 1exp-5
(Ca+2/Mg+2) IS-WHA1502 Comb.
- END OF ELECTRODE SPECIFICATION CHART # 1 -
ELECTRODE SPECIFICATION: CHART # 2
Temp.
Range pH Range
Electrode Cat. No. ppm Range øC Interferences
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Ammonia 17,000 above Volatile amines
(NH3) IS-NH31501 to 0.01 11 0-50
Ammonium IS-NH41501 18,000 K
(NH4+) IS-NH41502 to 0.1 4-10 0-50
Bromide IS-BRO1501 79,900 S-2, I-, CN-, high
(Br-) IS-BRO1502 to 0.4 2-14 0-80 levels of Cl- and NH3
Cadmium IS-CD21501 11,200 Ag+, Hg+2, Cu+2, high
(Cd+2) IS-CD21502 to 0.01 2-12 0-80 levels of Pb+2 & Fe+2
Calcium IS-CAL1501 40,000 Pb+2, Hg+2, Cu+2,
(Ca+2) IS-CAL1502 to 0.2 3-10 0-50 Ni+2
Carbon
Dioxide (CO2)
Carbonate 4.8-5.2 Volatile weak acids
(CO3+2) IS-CO21501 440-4.4 0-50
Chloride IS-CLO1501 35,500
(Cl-) IS-CLO1502 to 1.8 2-12 0-80 S-2, I-, CN-, Br-
Chloride IS-LCL1501 35,500 3.5-9 ClO4-, I-, NO3-
(Cl-) IS-LCL1502 to 0.2 0-50
Copper IS-CUO1501 6,350 to Ag+, Hg+2, high
(Cu+2) IS-CUO1502 6.4exp-4 2-12 0-80 levels of Cl-, Br-,
Fe+2, Cd+2
Cyanide IS-CNO1501 260 to 11-13 S-2, I-, Br-, Cl-
(CN-) IS-CNO1502 0.13 0-80
Fluoride IS-FOO1501 Saturated OH-
(F-) IS-FOO1502 to 0.02 5-8 0-80
Fluoro-
borate IS-BF41501 10,800 to 2.5-11 ClO4-, I-, CN-
(BF4-) IS-BF41502 0.1(as B) 0-50
Iodide IS-IOO1501 127,000 S-2, CN-, Br-, Cl-,
(I-) IS-IOO1502 to 6exp-3 0-14 0-80 S2O3-2, NH3
Lead IS-PB21501 20,700 Ag+, Hg+2, Cu-2, high
(Pb+2) IS-PB21502 to 0.2 3-8 0-80 levels Cd+2 and Fe+2
Lithium IS-LIT1501 6,900 Na+, K+, Ca+2
(Li+) IS-LIT1502 to 0.7 5-10 0-50
Nitrate IS-NO31501 62,000 2.5-11 ClO4-, I-, CN-, BF4-
(No3-) IS-NO31502 to 0.6 0-50
Nitrogen Oxide 220 to 1.1-1.7 SO2, HF, acetic acid
(NOx) IS-NOX1501 0.2 0-50
Perchlorate IS-PER1501 98,000 2.5-11 no significant
(ClO4-) IS-PER1502 to 0.7 0-50 interference
pH (H+) IS-LPH1501 pH 1 to 7 0-50 no significant
interference
Potassium IS-KOO1501 39,000 Cs+, NH4+
(K+) IS-KOO1502 to 0.04 2-12 0-50
Silver
Sulfide IS-AGS1501 Ag+=107,900
(Ag+/S-2) IS-AGS1502 to 0.01 2-12 0-80 Hg2+, Hg+
S-2=32,100
to 0.003
Sodium IS-NA71501 Saturated H+, K+, Li+, Ag+,
(Na+) IS-NA71502 to 0.02 5-12 0-80 Cs+, Tl+
Sodium IS-LNA1501 23,000 K+, Li+
(Na+) IS-LNA1502 to 0.2 5-10 0-50
Sulfur
Dioxide 500 to 1.1-1.7 HF, acetic acid
(SO2) IS-SO21501 0.5 0-50
Surfactant IS-SUR1501 12,000 similar types of
(X+, X-) IS-SUR1502 to 1.0 2-12 0-50 surfactants
Thiocyanate IS-SCN1501 58,000 S+2, CN-, I-, Br-
(SCN-) IS-SCN1502 to 0.3 2-10 0-80 S2O3-2, NH3
Water 40,000
Hardness IS-WHA1501 to 0.4 0-50 Cu+2, Zn+2, Ni+2,
(Ca+2/Mg+2) IS-WHA1502 (as Ca) 5-10 Fe+2
- END OF ELECTRODE SPECIFICATION CHART # 2 -
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