Hanna HI 1230B Gel Filled PEI Body pH Electrode

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Product Description

Hanna HI 1230B Gel Filled PEI Body pH Electrode with BNC Connector

The spherical pH sensing portion is made with general purpose glass, suitable for most pH measurements, and is protected by an extension of the durable PEI body.

  • Durable PEI plastic body for protection in the field.
  • Double junction design resists clogging.
  • Made for environmental, field, and laboratory testing.

General Purpose Glass Formulation

General Purpose (GP) glass, as the name implies, is a standard glass formulation that is used for general use. A pH electrode with GP glass will have a resistance of 100 megaohms at 25°C and is suited for measuring the pH of samples that are at ambient temperatures. The HI1230B is suitable to use with samples that measure from 0 to 70°C.

Spherical Bulb

The spherical bulb is for general purpose use. Other tip shapes include conic for penetration and flat tip for surface measurements.

PEI Body

The body of the HI1230B is composed of polyetherimide (PEI) resin. The PEI body is suitable for a wide range of applications and excels in field measurements due to its durability. The shielding around the spherical glass tip minimizes breakage due to accidental bumping or dropping of the electrode. PEI plastic is a high-quality plastic that is chemically resistant to many aggressive chemicals.

Double Junction Reference

A double junction pH electrode has an internal compartment surrounding the reference wire. Silver ions are present in the electrolyte of the internal compartment, which houses the Ag/AgCl reference wire; the electrolyte outside this compartment is silver free. The double junction design means that virtually no silver from the electrode enters the sample. This design allows measurement in applications where silver ions in the sample are undesirable or silver precipitates on the junction are likely to form.

BNC Connector

The HI1230B environmental ph electrode uses a BNC connector. This type of connector is universal in that it can be used on any pH meter that has the female BNC probe input. Other types of connectors include DIN, screw type, T-type, and 3.5mm to name a few. These types of connectors tend to be proprietary for a particular type of meter and are not interchangeable.

electrode fill solutions comparison

Conventional electrodes are normally single junction. As depicted by the figure above, these electrodes have only a single junction between the internal reference wire and the external solution. Under adverse conditions, such as high pressure, high temperature, highly acidic or alkaline solutions, the positive flow of the electrolyte through the junction is often reversed resulting in the ingress of sample solution into the reference compartment. If this is left unchecked, the reference electrode can become contaminated, leading to complete electrode failure. Another potential problem with single junction electrodes is the clogging of the junction due to silver chloride (AgCl) precipitation. Silver can be easily precipitate in samples that contain Tris buffer or heavy metals. When the electrolyte solution makes contact with the sample, some AgCl will precipitate on the external face of the junction. The result is drifty readings obtained from the sensor.

Hanna’s double junction system, as the name implies, has two junctions, only one of which is in contact with the sample as shown in the figure. Under adverse conditions, the same tendency of sample ingress is evident. However, as the reference electrode system is separated physically from the intermediate electrolyte area, the contamination of the electrode is minimized. The likelihood of clogging of the junction is also reduced with a double junction electrode since the outer reference cell uses a fill solution that is “silver-free”. Since there is no silver present, there is no precipitate that can form to clog the junction.

Specifications

Specification Name Detail
SKU HI1230B
Description combination pH electrode
Reference double, Ag/AgCl
Junction / Flow Rate ceramic, single / 15-20 µL/h
Electrolyte gel
Max Pressure 2 bar
Range pH: 0 to 12
Recommended Operating Temperature -5 to 70˚C (23 to 158˚F)
Tip / Shape spheric (dia: 7.5 mm)
Temperature Sensor DIN model only
Amplifier DIN model only
Body Material PEI
Cable coaxial; 1 m (3.3’)
Recommended Use field applications, soil solution, photographic chemicals, laboratory (general use)
Connection BNC

 

 

Jual Hanna HI 1230B Gel Filled PEI Body pH Electrode dengan harga murah dan berkualitas bergaransi tentunya. dapat di kirim ke seluruh wilayah Indonesia.

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Karyamandiritechindo.com Supplier dan Distributor Hanna Instruments di Indonesia. Karyamandiritechindo.com menyedikakan juga berbagai merk Alat ukur & Lab, Alat Survey, Alat komunikasi dan GPS

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