Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
post
page
PTSA App

AlpHa Measurement Solutions |
Ion-Selective Electrodes in Semiconductor

ISE in Semiconductor

The semiconductor industry fabricates chipsets, wafers, and printed circuit boards. Moreover, these processes require ultrapure water for cleaning, rinsing, etching, and surface conditioning. As a result, semiconductor manufacturing involves the use of ion-selective electrodes (ISEs) to measure ions in various process controls. For example, monitoring sodium, calcium, and chloride to identify contamination in rinse and process water. Another important application is in measuring fluoride concentration after the etching process. 

Critical design features, such as form factor, insertion, and reference junction material, enable AlpHa’s ISEs to be designed for specific application requirements. AlpHa can assist in developing ISEs that require a high level of customization to ensure performance objectives are achieved. AlpHa’s ISE portfolio targets over 20 different ions and is designed for both lab and continuous process environments.

Ion-Selective Electrodes in Semiconductor
Ion-Selective ElectrodeRange @ 25°CTechnology TypeTemp. RangeWarranty
Ammonia (NH3)0.01 – 17,000 ppm as NH3Gas Sensing0 – 50°C12 Months
Ammonium (NH4+)0.1 – 14,000 ppm as NPVC Membrane0 – 40°C6 Months
Bromide (Br-)0.2 – 79,900 ppmSolid State Pellet0 – 80°C12 Months
Cadmium (Cd2+)0.01 – 11,200 ppmSolid State Pellet0 – 80°C12 Months
Calcium (Ca2+)0.5 – 40,100 ppmPVC Membrane0 – 40°C6 Months
Carbon Dioxide (CO2)4.4 – 440 ppmGas Sensing0 – 50°C12 Months
Chloride (Cl-)1.8 – 35,000 ppmSolid State Pellet0 – 80°C12 Months
Copper (Cu2+)0.064 – 6,400 ppmSolid State Pellet0 – 80°C12 Months
Cyanide (CN-)0.2 – 260 ppmSolid State Pellet0 – 80°C12 Months
Fluoride (F-)0.02 – 19,000 ppmSolid State Crystal0 – 80°C12 Months
Fluoroborate (BF4-)VariesPVC Membrane0 – 40°C6 Months
Iodide (I-)0.01 – 127,000 ppmSolid State Pellet0 – 80°C12 Months
Lead (Pb2+)0.2 – 20,700 ppmSolid State Pellet0 – 80°C12 Months
Lithium (Li+)0.2 – 10,000 ppmPVC Membrane0 – 40°C6 Months
Magnesium (Mg2+)0.1 – 30,000 ppmPVC Membrane0 – 40°C6 Months
Nitrate (NO3-)0.1 – 14,000 ppm as NPVC Membrane0 – 40°C6 Months
Nitrogen Oxide (NOx)VariesGas Sensing0 – 50°C12 Months
Perchlorate (ClO4-)VariesPVC Membrane0 – 40°C6 Months
Potassium (K+)0.04 – 39,000 ppmPVC Membrane0 – 40°C6 Months
Silver (Ag+)0.01 – 107,900 ppmSolid State Pellet0 – 80°C12 Months
Sulfide (S2-)0.01 – 32,100 ppmSolid State Pellet0 – 80°C12 Months
Sodium (Na+)0.01 – 100,000 ppmSensing Glass0 – 80°C12 Months
Surfactant (X+ / X-)VariesPVC Membrane0 – 40°C6 Months
Water Hardness (Ca2+ / Mg2+)0.5 – 40,000 ppmPVC Membrane0 – 40°C6 Months
  • Form Factor
    • 12 mm
    • Process Body
    • Cartridge
    • Custom Options Available
  • Housing Material Options
    • Glass
    • Ryton® (PPS)
    • ABS
    • Epoxy
    • Polycarbonate
    • Kynar® (PVDF)
    • Polyethylene
    • PEEK
    • PVC / CPVC
    • Teflon™ (PTFE)
    • Ultem® (PEI)
    • Custom Options Available
  • Thermistor Options
    • Not commonly integrated, however, optional per design requirements
  • Reference System
    • Ag / AgCl
    • Custom Options Available
  • Reference Junction Options
    • Single Junction
    • Double Junction
    • Custom Options Available
  • Reference Junction Material / Design
    • Ceramic Pin / Annular / Disc
    • Fiber / Pellon
    • Open Aperture 
    • Porous Plastic (PTFE / HDPE / PP)
    • Sleeve Junction / Free Flow (liquid / liquid or ground glass joint)
    • Solid State
    • Custom Options Available
  • Reference Electrolyte
    • Sealed
      • Soft Gel
      • Solid Gel
    • Refillable
      • Liquid
      • Soft Gel
    • Custom Options Available
  • Integrated Insertions
    • PG 13.5
    • 3/4" NPT
    • 1/2" NPT
    • 1" NPT
    • Custom Options Available
  • Analog
    • Millivolts
    • 0 – 5 V
    • 0 – 10 V
    • 4 – 20 mA
    • Custom Options Available
  • Digital
    • RS-485 MODBUS RTU
    • Custom Options Available 
  • Connectors
    • Integrated Connectors (detachable or cableless)
      • S7
      • S8
      • Integrated BNC
      • Variopin
      • Custom Options Available 
    • Connectors with Cables (including temperature)
      • BNC
      • DIN
      • MOLEX
      • Tinned Leads
      • Mil-spec
      • 2.5 mm / 3.5 mm phono
      • RCA
      • Spade Lugs
      • LEMO
      • Circular Connectors
      • Any commercially available connectors and custom options available