Description
LabSen 551 pH spear electrode is intended for direct pH measurement of semi-solid to solid samples such as soil, culture media, fruits and vegetables. Manufactured with patented Swiss sensor technology and materials from APERA Instruments, it features a reinforced PVC housing and a pointed LabSen S-type glass membrane. The low-resistance yet durable tip membrane yields fully stabilised readings within 15 to 30 seconds and is up to 10 times more robust than conventional products, markedly lowering breakage risk during insertion or impact. Polymer electrolyte with a hole-diaphragm structure allows direct sample contact without clogging and requires no refilling. A long-life reference system of glass tube, AgCl and reference silver wire, with cotton packing that prevents AgCl–electrolyte reactions under temperature change, improves reference stability and extends electrode life. Blue gel electrolyte neither flows nor forms air bubbles; the PVC shaft is stable and soil-resistant. Measuring range is 0 to 14 pH at recommended temperatures of 0 to 80 °C. Body dimensions are Ø15 × 90 mm with measuring tip Ø6 × 25 mm. BNC connector and Ø3 mm × 1 m cable ensure compatibility with BNC pH meters; no temperature sensor is built in. Pack size: 1 piece.
This article is part of pH electrodes & sensors, in pH & electrochemistry.
Key features
- Pack size: 1 pc(s)
- Product type: pH spear electrode
- pH range: 0 – 14
- Electrolyte: Polymer
- Shaft material: PVC plastic
- Diaphragm: Ceramic + single pore
Récemment consulté
Vous aimerez peut-être aussi
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about LabSen®551 Professional Combination pH Electrode for Direct Soil pH
What is this article?
LabSen®551 Professional Combination pH Electrode for Direct Soil pH is the article on this page. Luminix Health distributes APERA Instruments for laboratory use. It sits in électrodes pH & capteurs, inside pH & électrochimie, in Instruments de laboratoire.
A pH electrode is a glass membrane and a reference. It is a consumable: the glass ages, the junction clogs, and the reading drifts. A refillable electrode and a gel electrode differ in how they are maintained. The connector has to match the meter. The electrode, not the meter, is usually what is wrong.
A pH meter is a voltmeter on a glass electrode. The voltage tracks hydrogen-ion activity, and the electrode is converted to pH only after it is adjusted with buffers of known value. Conductivity measures how well a solution carries a current, which for dilute salts tracks concentration. Dissolved oxygen and titration are further electrodes on the same idea: a sensor, a standard, and a reading that is only as fresh as the calibration. Buffer values and chemical identity sit on PubChem. Accreditation of the calibration laboratory is the field of BELAC and EURAMET.
Which category should I open next?
The category is pH & électrochimie. The sub-category is électrodes pH & capteurs. The catalogue is Instruments de laboratoire.
Shelves beside this one are pH-mètres, Conductimètres & cellules, Oxymètres dissous & multimètres, Titrateurs & systèmes d'électrochimie and accessoires pH & électrochimie.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.