In stock

Refillable Double Junction pH Electrode with BNC Connector – HI1043B

The HI1043B is a glass body, refillable, double junction pH electrode with a BNC connector. This electrode has a single ceramic junction in the outer reference cell and the pH sensing portion is made with high temperature glass.

This design consideration is ideal for hydrocarbons, paints, solvents, high conductivity samples, strong acids and bases, and for measuring samples at elevated temperatures.

  • Refillable Electrode
  • Double Junction Design
  • High Temperature Glass

743 AED

Estimated delivery: 8 - 9 December

SKU:HI1043B

Hanna Instruments offers a wide variety of pH electrodes that are designed for many different applications. The type of glass used for sensing pH, bulb shape, body material, type of junction, type of reference and electrolyte used are just some of the design considerations.

The HI1043B uses high temperature (HT) glass, spherical bulb, glass body, single ceramic frit, double junction and is refillable with 3.5M KCl.

high temperature glass

High Temperature Glass Formulation

The measurement of pH at very high temperatures is detrimental to the sensitive glass bulb and will shorten the life of it. A pH electrode with general purpose (GP) glass will have a resistance of 100 megaohms at 25℃ while the resistance of HT glass is around 400 megaohms at 25℃. As the HI1043B is used at elevated temperatures the resistance decreases and approaches the resistance of GP glass. The HI1043B is suitable to use with samples that measure from 0 to 100℃.

high temperature glass

Spherical Bulb

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

glass body

Glass Body

The glass body is ideal for laboratory use. The glass is resistant to many harsh chemicals and is easily cleaned. The glass body also allow for a fast transfer of heat to the internal reference electrolyte. The mV generated by the reference cell is temperature dependent. The faster the electrode reaches equilibrium, the steadier the reference potential.

double junction reference

Single Ceramic Double Junction Reference

The HI1043B is a double junction design. pH electrodes are available as single junction or double junction. See below for a complete description of the differences. The junction also known as a salt bridge is necessary component of the electrical circuit. The movement of ions must flow through the junction for a steady reading. The outer reference has a single ceramic frit. The ceramic is a porous material that is easily fused with the glass body and has a similar expansion coefficient. A single ceramic junction has a flow rate of 15-20 μL/hour. Other junction types are available with higher flow rates and made with different materials.

refillable

Refillable

The HI1043B is a refillable probe. Since it is a double junction pH electrode the fill solution is the HI7082 3.5M KCl. This solution does not contain any silver as with single junction electrode. The absence of silver will prevent any silver precipitate from forming at the junction surface and clogging it. Clogging of the junction will result in drifty and erratic readings.

bnc connector

BNC Connector

The HI1043B has 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 type of connectors include DIN, screw type, T-type, and 3.5mm to name a few. These other types of connectors tend to be proprietary for a particular type of meter and are not interchangeable.

Single Junction Versus Double Junction pH Electrodes

junction types

Conventional electrodes are normally single junction. As depicted by the figure above, these electrodes have only a single junction between the internal refernce 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

SKU HI1043B
Name Refillable Double Junction pH Electrode with BNC Connector – HI1043B
Measurement Range pH: 0 to 14
Reference Cell Type double, Ag/AgCl
Junction Type/Flow Rate ceramic, single / 15-20 µL/h
Refill Electrolyte 3.5M KCl
Body Material glass
Tip / Shape spheric (dia: 9.5 mm)
Max. Pressure 0.1 bar
Temperature Operating Range 0 to 100°C (32 to 212°F) – HT
Body Length/Overall Length 120 mm / 175.5 mm
Temperature Sensor no
Outer Diameter 12 mm
Cable coaxial; 1 m (3.3’)
Connector Type BNC
Recommended Use high conductivity samples, hydrocarbon, paints, sea water, solvents, strong acid and base, tris buffer

Manuals

Refillable Double Junction pH Electrode with BNC Connector – HI1043B

Bestsellers

Inquire Now

COD Low Range Reagent Vials, EPA Method (25 tests) - HI93754A-25

236 AED
The HI93754A-25 are barcode reagent vials that follow the EPA approved method for the low range determination of chemical oxygen demand (COD) using a compatible benchtop photometer. These high quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each box for traceability.
  • Pre-dosed reagents for ease of use
  • Supplied with certificate of quality
  • Marked with expiration date and lot number for traceability
Inquire Now

Digital PEI Body pH Electrode with Matching Pin for Field Applications - HI12301

481 AED
The HI12301 is a plastic body, double junction, gel filled pH electrode with a matching pin and built-in temperature sensor for temperature compensated measurements in a single probe design. This probe connects to the meter with a 3.5 mm connector. The 3.5 mm connector is proprietary to meters that use digital electrodes. The matching pin integrated into the HI12301 is for the Sensor Check™ capability of the edge pH meter; this feature is used to identify problems with the pH electrode such as cracks in the sensing glass or poor condition of the reference junction. The HI12301 electrode features a built-in microchip that stores sensor type, serial number, and calibration information. It also features a single ceramic junction and the spherical pH sensing portion is made with low temperature glass. The electrode has a rugged PEI (polyetherimide) body that has the chemical resistance of a glass body in an unbreakable plastic making it ideal for field and industrial applications.
  • Matching Pin for enabling Sensor Check feature that alerts to a broken electrode or clogged junction
  • Double Junction Reference
  • 3.5 mm Connector

Refillable Double Junction pH Electrode with BNC Connector - HI1043B

743 AED
The HI1043B is a glass body, refillable, double junction pH electrode with a BNC connector. This electrode has a single ceramic junction in the outer reference cell and the pH sensing portion is made with high temperature glass. This design consideration is ideal for hydrocarbons, paints, solvents, high conductivity samples, strong acids and bases, and for measuring samples at elevated temperatures.
  • Refillable Electrode
  • Double Junction Design
  • High Temperature Glass
Inquire Now

edge® Multiparameter EC/TDS/Salinity Meter - HI2030

2,530 AED
edge’s groundbreaking design is the culmination of Hanna’s vision, design capabilities, integrated production and world class R&D. The edge meter is only 0.5” thick yet rich in features to accommodate the needs of a vast amount of customers. For those that prefer very simplistic operation there is a basic mode operation with simplified menu and options while for those who require advanced features there is the full featured standard operating mode. The edge HI2030 EC/TDS/Salinity kit can can be upgraded at any time with additional probes to measure pH or Dissolved Oxygen.
Inquire Now

Conductivity (EC) Controller (0.0 - 199.9 µS/cm) - BL983320-1 | 115/230VAC

692 AED
The BL983320 is a compact, panel mounted, process controller for measuring electrolytic conductivity (EC) of a process stream that is within the 0.0 to 199.9 µS/cm range. The device features a large LCD with protective cover. Users may choose from automatic or manual dosing modes. When in automatic mode the dry contact relay is activated when a reading is above the set point. The relay can be used to activate a solenoid that switches from one DI (deionized) tank to another or to open a valve that will allow lower EC water to flow into a tank being monitored in order to lower its EC. The BL983320 can also be used to monitor the quality of water produced from ion exchange, reverse osmosis (RO) or distillation. Multicolor LED Indicator LED changes color based on status. Fire Retardant Casing For additional safety the controllers outer case is made of fire resistant plastic. Splash Resistant Cover A clear plastic cover protects the face panel from dirt and liquids.
Inquire Now

Refillable Combination pH Electrode with BNC Connector - HI1131B

543 AED
The HI1131B is a glass body, refillable, double junction pH electrode with a BNC connector. This electrode has a single ceramic junction in the outer reference cell and the spherical pH sensing portion is made with high temperature glass. This design consideration is ideal for laboratory samples, beer and other liquid samples, as well as general purpose use.
  • Refillable Electrode
  • Double Junction Design
  • High Temperature (HT) Glass

GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester - HI98131

663 AED
The HI98131 is a slim, lightweight, and waterproof pocket sized meter that measures pH, conductivity (EC), total dissolved solids (TDS) and temperature. The meter operation is simplified with two buttons. One is used for on/off and for calibration while the other is used to switch between the measurement modes. The HI98131 has advanced features including a selectable EC to TDS conversion factor (0.5 - 500 ppm and 0.7 - 700 ppm).
  • 3 parameters, pH, EC/TDS and temperature, in one meter
  • Quick Cal Mode to calibrate pH and EC/TDS with one solution
  • TDS Conversion Factor selectable between 0.5 (500 ppm) and 0.7 (700 ppm)
Back to Top
Whatsapp
Product has been added to your cart