HI1230B

Single junction plastic-body composite pH electrode

• Measuring range: 0 to 12 pH, Sample temp. range: -5 to 70 °C (23 to 215 °F), Sample pressure ≤ 2 bar;

• For routine laboratory, field, beer and other sample measurement

When using a new electrode, first remove the protective cap from the top and inspect the entire electrode. If salt crystals are found on the electrode head and inside the protective cap due to evaporation of the internal electrolyte through the junction, this does not affect normal use of the electrode; it indicates that the electrode junction is functioning properly and can simply be rinsed off with water. During transport, air bubbles may form inside the glass bulb at the electrode head. In this case, gently shake the electrode as you would a common mercury thermometer to remove the bubbles. If the glass sensing membrane or junction of the electrode is relatively dry, soak the electrode in HI70300 electrode storage solution for at least 1 hour to keep the dry glass sensing membrane and junction moist; frequent soaking is beneficial to the electrode.

HI1230B uses low temperature (LT) glass, spherical bulb, polyetherimide (PEI) body, single ceramic frit and double junction.

Spherical bulb

Spherical bulbs are used for general purposes. Other shapes include conical for penetration and flat for surface measurement.

PEI polyetherimide body

The body of the HI1230B is made of polyetherimide (PEI) resin. The PEI body is suitable for a wide range of applications and performs well in field measurement due to its durability. The shield around the spherical glass reduces breakage caused by accidental impact or dropping of the electrode. PEI plastic is a high-quality plastic with chemical resistance to many corrosive chemicals.

Double junction reference

Double junction electrodes have an internal compartment around 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 contains no silver. The double junction design means that almost no silver from the electrode enters the sample. This design allows measurement in applications where silver ions are undesirable in the sample or may form silver precipitates at the junction.

BNC connector

• The HI1230B uses a BNC connector. This type of connector is universal because it can be used on any pH meter with a female BNC probe input. Other types of connectors include DIN, screw-type, T-type and 3.5 mm, etc. These types of connectors tend to be proprietary to specific types of meters and are not interchangeable.

• Note: Do not use distilled water or deionized water to store or soak the electrode, as this will cause the electrode sensor to fail