Radnoti Ion Selective Electrodes
Toll Free 1-800-428-1416
227 West Maple Ave
Monrovia, Ca 91016

 

   
 
Ion Selective Electrodes

Radnoti is proud to offer the Micro Electrodes Inc. manufactured electrodes.  Specifically designed for use with Radnoti systems these electrodes feature a minimized overall length so as to reduce the risk of breakage when incorporated into the bench top systems.  As many of the system components may need to be handled at one time or another, the electrodes maintain a minimum external exposure to avoid inadvertently breaking the electrodes when servicing the systems.   The compact design still incorporates all of the desired features and benefits of the original Micro Electrodes designs.

 

Catalog#
Description
Pkg.
MI410
Combination pH
1
MV-ADPT
pH instrumentation
1
O2-ADPT
Oxygen Instrumentation
1
MI-442
K+ Ions
1
MI-600
Ca++ Ions
1
MI-730
Oxygen
1
MI-420, 425
Na+ Ions
1
MI-740, MI8-740, MI16-740
NH3, (NH4)+ Ions
1
MI-720 Dip Type
Ca++ Ions
1
MI-915, 905 Dip Type
Conductivity
1

MI-410 Micro-combination pH microelectrode

Measures volumes as small as 5 microliters.  Each combination pH electrode includes a bottle of reference solution.

 

SPECIFICATIONS:

 
Total length 15cm
Lead Length 1m
Body (outer diameter)   6 mm
Tip (outer diameter)         pH:  1.2 mm
Ref + pH:  2.5 mm
Response time   5 to 15 seconds
Depth of immersion 1.5 to 2 mm
Sensitivity pH 0 to 14
Temperature range -5o to 100o C
Reference electrode type:  Solution and electrode 3M KCl and Ag-AgCl

 

MV-ADPT Millivolt Adapter

For use with any Microelectrodes,Inc. pH/Ion Electrodes.  Please specify connector needed for interconnecting cable to adapter, when ordering.  We will provide the patch cord between the adapter and your measuring device.  Please specify this also when ordering.

This adapter allows a pH/Ion Electrode to be directly connected to a voltage reading device (i.e. Strip Chart, A/D Board, DVM) without the need of a pH/Ion Meter.  You will need to do Nernst equations manually or with a computer.

SPECIFICATIONS:

Size 28.5 mm x 22.4 mm x 58 mm
Power requirements 1 lithium CR2032 3V battery
Battery life 5 years
Weight 70 grams
Output 1mV/mV Input
Connectors LEMO 00.250

 

O2-ADPT Oxygen Adapter

For use with any Microelectrodes,Inc. Oxygen Electrodes.  Please specify connector needed  for interconnecting cable to adapter when ordering.  We will provide the patch cord between the adapter and your measuring device.  Please specify when ordering.

This adapter allows an Oxygen Electrode to be directly connected to a voltage reading device (i.e. Strip Chart, A/D Board, DVM) without the need of an Oxygen Meter.  You will need to calibrate manually or use a computer.

SPECIFICATIONS:

Size 28.5 mm x 22.4 mm x 58 mm
Power requirements 2 lithium CR2032 3V batteries
Battery life 2 years
Weight 70 grams
Output 1mV/5 pA Input
Connectors LEMO 00.250

 

MI-442 K+ Ion microelectrode

This miniature electrode has many applications in general purpose analyses and in microchemical studies.  It requires the use of an external reference electrode such as the MI-409 Micro-Reference Electrode.  Also available in Flow-thru configuration, similar to 8-705, 16-705.

SPECIFICATIONS:

Total length 14.6 cm
Lead length 1 m
Body (outer diameter)   Stainless         3.2 mm
Tip (outer diameter)    PVC              2.4 mm
Sensitivity 10o to 10-5 M K+
Temperature range 0oC to 50oC
Response time 5 to 15 seconds
Depth of immersion 0.1 mm
Selectivity K+ / Na+ = 1000
K+ / (NH4)+ = 100

 

MI-600 Ca++ Ion microelectrode

This miniature electrode has many applications in general purpose analyses and in microchemical studies.  It requires the use of an external reference electrode such as the MI-409 Micro-Reference Electrode.  Also available in Flow-thru configuration, similar to 8-705, 16-705.

SPECIFICATIONS:

Total length 14.6 cm
Lead length 1 m
Body (outer diameter)        3.2 mm
Tip (outer diameter)            2.4 mm
Sensitivity 10o to 10-6 M Ca++
Temperature range 0oC to 50oC
Response time 5 to 15 seconds
Depth of immersion 0.1 mm
Selectivity Ca++ / Mg++ = 20000
Ca++ / Na+ = 10000
Ca++ / K+ = 10000

 

MI-730 Dip-type O2 microelectrode

The MI-730 Micro-Oxygen electrode features negligible oxygen consumption, fast response and requires less than a drop.  Each electrode is supplied with 6 assembled membranes and a bottle of electrolyte solution.

SPECIFICATIONS:

Total length 8.6 cm

Lead length

  2 m
Body (outer diameter) 3 mm
Tip (outer diameter)     3 mm
Response range 0 to 100%
Response time less than 20 seconds
Depth of immersion 0.1 mm
Reference electrode type Ag
Sensitivity 1700 pA in air at 25oC
O2 consumption in air at 25oC 2.5 x 10-4 ul/hr

 

MI-420 Na+ Ion microelectrode

This miniature electrode has many applications in general purpose analyses and in microchemical studies.  It requires the use of an external reference electrode such as our MI-409 Micro-reference electrode.  Also available in Flow-thru configuration, similar to the 8-705 and 16-705.

SPECIFICATIONS:

Total length 14.6 cm
Lead length 1 m
Body (outer diameter) 2 mm
Tip (outer diameter) 1.5 mm
Sensitivity 10o to 10-5 Na+ M
Temperature range -5oC to 100oC
Response time 5 to 15 seconds
Depth of immersion 1.0 mm
Selectivity Na+ // K+ = 1000
Ag+ / K+ = 1.5 x 106
Ag + / Li+ = 250
Na+ / (NH4)+ = 3000

 

MI-425 Na+ Ion microelectrode

Each combination sodium probe includes a bottle of reference solution.  This microelectrode is also available in a slender configuration.

SPECIFICATIONS:

Total length 15 cm
Lead length 1 m
Body (outer diameter) 6 mm
Tip (outer diameter) Na+ 1.5mm
Na+ + Ref:  3.2mm
Response time 5 to 15 seconds
Depth of immersion 1.5 mm
Sensitivity Saturated to 10-6M Na+
Temperature range -5o to 100oC
Reference electrode type:  Solution and electrode 1M KCl and Ag-AgCl
Selectivity Na+/ K= 1000
Na+/(NH4)+= 3000
Ag+/K+= 1.5 x 106
Ag+/Li+= 250

 

MI-740 Dip-type NH3, (NH4)+ microelectrode

The MI-740 Micro-Ammonia electrode features fast response and requires less than a drop.
Each electrode is supplied with 6 assembled membranes, a bottle of electrolyte solution and a bottle of NaOH (ammonia free).
Accessories: MI-740A Replacement Membrane Housing Kit:  Kit includes 6 membranes, 1 bottle of electrolyte solution and 1 bottle of NaOH (ammonia free).

SPECIFICATIONS:

Total length 8.6 cm

Lead length

  2 m
Body (outer diameter) 6 mm
Tip (outer diameter)     3 mm
Concentration range 1 to 10-6 M )17000 to 0.02 ppm)
Sensitivity 53 mv/decade
Interferences volatile amines
Response time 2 to 3 min
Depth of immersion 0.1 mm
Reference electrode type Ag-AgCl

 

MI8-740 and MI16-740 Flow-thru NH3,(NH4)+ microelectrodes (For 1/8" % 1/16" I.D. Tubing)  

These miniature electrodes are ideal for monitoring ammonia in a continuous flow such as water, blood, urine, physiological fluids, etc.  They feature fast response and require less than a drop.  Each microelectrode is supplied with 6 assembled membranes, a bottle of electrolyte solution and a bottle of NaOH (ammonia free).

Accessories:  8-740A & 16-740A Housing Kits:  Kit includes 6 T-membranes, a bottle of electrolyte solution and a bottle of NaOH (ammonia free).

SPECIFICATIONS:

Total length 8.6 cm
Lead length 2 m
Diameter membrane barrel 3 mm
Material of barrel acrylic
Material of flow cell polysulfone
Cell volume (T-fittings) 0.093 ml & 0.011 ml
Sensitivity 53 mv/decade
Response time 2 to 3 min
Response range 1 to 10-6 M (17000 to 0.02 ppm)
"T" fittings (size) 1/8" & 1/16"
Interferences volatile amines

 

MI-720 Dip-type CO2 microelectrode

This miniature electrode for carbon dioxide features fast response and requires less than a drop.  Each microelectrode is supplied with 6 assembled membranes and a bottle of electrolyte solution.

Accessories:  MI-720A Replacement Membrane Housing Kit:  Kit includes 6 membranes and 1 bottle of electrolyte solution.

SPECIFICATIONS:

Total length 8.6 cm
Lead length 2 m
Body (outer diameter) 6 mm
Tip (outer diameter) 3 mm
Concentration range 10-2 to 10-4M (440 to 4.4 ppm)
Sensitivity 0.4 mv/mm CO2
Interferences weak volatile acids
Response time less than 1 min
Depth of immersion 0.1 mm
Reference electrode type Ag-AgCl

 

MI-915 and MI-905 Dip-type Conductivity microelectrodes

SPECIFICATIONS:

  MI-915 MI-905
Total length 14.6 cm 14.6 cm
Lead length 1 m 1m
Body (outer diameter) 3.2 mm 2.4 mm
Cell constant (approx) 1 1
Depth of immersion 5 mm 5 mm
Material of flow cell ABS ABS