ScienceLine Plus - Precision in every application
In very demanding cases, off-the-shelf pH electrodes are just not quite good enough for certain samples or measurement conditions. These instances include (but are not limited to) measuring the pH of highly alkaline samples, samples containing sulphides or proteins and, for practical purposes, measuring the pH of a small sample quantity when in a small or deep vessel such as an NMR tube.
Our ScienceLine Plus range of pH electrodes meets the needs of these challenging conditions.
- Variety of electrode membrane head shapes (sphere, micro, spear) for optimum sample contact
- Choice of glass type, length, diameter and connection to suit the application
- Silamid® reference system with silver ion barrier and double-electrolyte for faster, more stable results and a longer electrode lifespan
ScienceLine Plus pH electrodes – micro head type
ScienceLine Plus pH "micro" electrodes are specifically designed for measuring low volume, precious or rare samples in narrow vessels like NMR cells. ScienceLine Plus micro pH electrodes have an extended shaft that narrows from 12 mm to just 5mm diameter at the measuring end; the narrow part being 130mm in length. Four configurations are available, each having a 3 metre cable, differing by meter connection type:
- Plug head for use with any type of meter using an optional cable
- DIN and banana plug
- BNC and banana plus
- Digital plug (IDS)
The basic micro head ScienceLine Plus pH electrodes without temperature compensation is fitted with a convenient socket (or plug head) at the non-measuring end so that any connecting lead may be chosen for fitment to all kinds of meters, no matter what the make.
IDS Digital for extra traceability
IDS digital electrodes facilitate connection to IDS compatible meters or digital gateway such as the IDS Gate. IDS electrodes provide enhanced handling of measurement data within the electrode itself prior to an encrypted, digital transmission of all meta-data being made to the company server, making these devices ideal for use in strictly regulated laboratories such as those operating under GLP or FDA regulation 21 CFR Part 11.
Each electrode has an individual serial number whilst pH & metal combination electrodes are supplied with an additional quality certificate making for improved traceability through audit trails and associated documentation.
What makes ScienceLine Plus better than ordinary pH electrodes?
Unlike many pH electrodes that use chlorinated silver wire to form a silver/silver chlorine reference system (diaphragm) that degrades over time when in contact with certain sample types, all ScienceLine Plus series electrodes employ a Silamid® double reference with silver-ion trap that facilitates universal use, even in protein or sulphide containing samples. The diaphragm itself is a maintenance free encapsulated gel system, and the silver coating of the inner tube has significantly larger (5x) silver surface compared to the silver wire system making for a faster, more stable and longer. The outer bridge electrolyte consists of the proven 3 mol/l KCl, which may also be replaced by other bridge electrolytes if need be.
Choose the optimum pH electrode for your regular and demanding samples
ScienceLine Plus pH electrodes not only guarantee high measurement accuracy, stability and long service life, they also offer adaptability to the measuring task. This makes ScienceLine Plus pH electrodes the first choice for scientists and laboratory technicians wishing to operate at the highest level under challenging conditions in research, product development, manufacturing and within general quality control laboratories.