Hanna Instruments (M) Sdn Bhd
11A, Jalan PJS 11/20,
Bandar Sunway,
46150 Petaling Jaya,
Selangor, Malaysia.
+603-5638 9940
+603-5638 9829
Penang Branch Office
Hanna Instruments (M) Sdn Bhd
N0. 303-2-27, Krystal Point,
Jalan Sultan Azlan Shah,
11900 Sungai Nibong,
Penang, Malaysia.
+604-638 4558
+604-645 4558
penang@hannamalaysia.com

Sabah Branch Office
Hanna Instruments (M) Sdn Bhd

No. 4-1, 1st Floor,
Plaza Kingfisher,
Jalan Plaza Kingfisher 5,
Inanam, 88450 Kota Kinabalu,
Sabah, East Malaysia.
088-382 941
088-382 942
sabah@hannamalaysia.com

HI4112 Lead/Sulfate Combination Ion Selective Electrode (ISE)

Previous 10 / 34 Next

HI4112 Lead/Sulfate Combination Ion Selective Electrode (ISE) ISE Electrodes & Probes
RM 6,008.00
500 g
In Stock


Download Files

manhi_4112.pdf (193.88 KB)
The HI4112 is a solid state, combination ion selective electrode (ISE) for the determination of lead (Pb2+) in solution and indicator for sulfate in titrations. The lead sulfide sensing pellet produces a potential change due to the ion exchange between the inorganic pellet membrane and the sample. The internal sensing elements are housed within a durable polyetherimide (PEI) body. The HI4112 is ideal for a variety of applications in the plating industry and environmental monitoring.

  • Solid state sensor
  • Skirted cone geometry
  • Detection from 0.21 to 20,700 mg/L Pb2+

Details

The HI4112 lead/sulfate selective electrode is a complete potentiometric cell that contains a silver/silver chloride (Ag/AgCl) reference housed within a PEI plastic body with a potassium nitrate electrolyte. The internal elements are isolated from the sample by a compressed lead sulfide sensing membrane.

Hanna’s solid state combination ISEs are designed with a cone style junction. The skirted cone geometry of the sensor forms the liquid junction with the test solution at the tip of the junction cone, producing a highly stable reference potential and consistent flow rates of electrolyte into the solution. A simple press of the top portion of the ISE makes it easy to empty the electrolyte fill solution and replace when necessary.

For the HI4112 to measure lead accurately, it is important that the ionic strength of the standards and sample be adjusted to a high and constant value with the lead ionic strength adjuster (ISA) solution. The ISA ensures that the activity coefficient is constant so the concentration of free lead ions can be measured. Measuring all solutions with a constant ionic strength reduces the margin of error between measurements. The HI4112 lead/sulfate solid state ISE can measure from 1µM (0.21 mg/L) to 0.1M (20,700 mg/L).

The HI4112 can also be used as an indicator to follow the progress and detect the endpoint of a precipitation titration of sulfate. During the titration, the lead/sulfate ISE follows the lead concentration while a lead perchlorate solution is used to titrate the sample. The lead in the titrant solution reacts with the sulfate ions present in the sample to form a precipitate. Once all of the lead and sulfate ions have reacted, a change in mV occurs to signal the endpoint, and ultimately the sulfate concentration.

 

Conversion Table for Pb2+

 

Multiply

moles/L (M) to ppm (mg/L)

2.072 x 105

ppm (mg/L) to M (moles/L)

4.826 x 10-6

 
 

Features at-a-glance

Fixed Sensing Modules - Combination solid state ISEs are electrodes that detect free ions in a solution. The highly insoluble, compressed sensing pellet is attached to the electrode by a fixed sensing module for ease of use.

Durable PEI Body - The probe body is composed of durable polyetherimide (PEI) plastic.

BNC Connection - The HI4112 has a universal BNC connector for easy connection to any benchtop meter with a female BNC probe input.


Theory of Operation

A solid state sensor electrode develops a voltage due to the ion exchange that occurs between the solution and the inorganic membrane. An equilibrium occurs due to the highly limited solubility of the membrane material in the sample. When the ionic strength of the solution is fixed by the addition of ISA, the voltage is proportional to the concentration of free ions in solution.

Specifications

Type combination
Measurement Range Lead (Pb2+) 0.1M to 1•10-6M, 20,700 to 0.21 mg/L (ppm)
Optimum pH Range pH 4 to 7
Temperature Range 0 to 80 °C
Approximate Slope +27 mV
Diameter 12 mm
Overall Length 120 mm
Body Material PEI
Cable coaxial; 1 m (3.3’)
Connection BNC


 
Please leave your enquiry here, we will reply as soon as possible.
Name*  
Company Name  
Product Interested  
Quantity  
Email*  
Contact No.*  
Messages*  
   

You have 0 items in you cart. Would you like to checkout now?
0 items
Switch to Mobile Version