Guide to Reliable pH, Ion and Conductivity Measurements - when you need to be sure…

The MeterLab® Concept Following Good Laboratory Practice is second nature with MeterLab MeterLab from Radiometer Analytical incorporates all elements of the measuring chain - pH, ion and conductivity meters, electrodes and conductivity cells, solutions and sample handling - ensuring totally reliable measurements both in the laboratory and in the field. All elements are designed to make operation simple and error-free. The Right Electrode for your Application pages 4-5 Combined pH Electrodes pages 6-7 Reference Electrodes pages 8-9 Glass pH Electrodes page 10 Metal Electrodes page 11 Ion-selective...

Red Rod Electrodes Radiometer Analytical’s unique Red Rod Technology provides not only fast response time but also long-term accuracy and reproducibility. Red Rod electrodes feature: Reproducible measuring conditions ensured by the special bayonet head. The electrode fits into place in one easy movement and is fixed safely and securely in the same position for every measurement. Wide temperature range (0 to 100°C) thanks to fast temperature response of Red Rod Technology. Trouble-free liquid junction as Red Rod encapsulation of reference elements means no silver ions and therefore less risk of...

MC2095Sb XR820 XR440 XR200 XR400 XR150 XR110 REF921 REF601 REF621 REF451 REF421 REF401 REF361 REF321 REF251 REF201 Reference electrodes REF200 XG250 pHG311 pHG301 pHG211 pHG201 Applications pHG200 Glass electrodes Alkaline solutions Aqueous solutions Blood Education purposes Emulsions Fat/cream/cosmetics Field use Gel electrode Hops/beer Hydrofluoric acid Lacquer Liqueur etc. Long length >150 mm Low ionic strength Microsamples Milk Non-aqueous media Oil Paint Paper Penetration (cheese) Photo baths Sea water, swimming pools Soil Solids, high content of Suspensions Temperature, high or varying...

Combined pH Electrodes Red Rod combined pH electrodes BNC plug 103 mm All our electrodes are delivered with a Certificate of Conformity signed by the Total Quality Manager. This specifies the sensitivity, zero pH, response time and batch number of the electrode. We supply a bottle of filling solution with every combined pH electrode (with the exception of the GK2401B and GK2401C, and gel-filled electrodes). You may need a cable or plug adapter to connect your chosen electrode to your meter. Please see page 19. Type Part no. Type 7 -7 Part no. BNC -8 Reference system pH range Temperature range...

Penetration Microsamples pHC3031 XC161 pHC3359 E16M343 E16M325 Ag/AgCl 0 – 12 0 – 80°C 8 mm 14 mm Porous pin B10C161 Ag/AgCl 0 – 12 0 – 80°C 5 mm 8 mm Porous pin Ag/AgCl 0 – 12 0 – 80°C 3 mm 2 mm Fibre 3 M KCl + sat. AgCl 3 M KCl + sat. AgCl 3 M KCl + sat. AgCl General-purpose Gel-filled pHC3105 pHC3185 E16M329 E16M308 Ag/AgCl Ag/AgCl 2 – 12 2 – 12 0 – 80°C 0 – 80°C 12 mm 12 mm 18 mm 18 mm Opening Opening Robust Temp. sensor Solid gel Solid gel (3 M KCl) (3 M KCl) Never touch the electrode bulb with your fingers. Any grease may affect the electrode membrane and cause a drifting potential. 103...

Reference Electrodes Red Rod reference electrodes A reference electrode provides a stable potential whatever the measurement conditions. The main differences between reference electrodes are the type of reference system and the liquid junction. Radiometer Analytical offers electrodes using both Red Rod and traditional technology (calomel, silver-silver chloride, mercurous sulphate and mercuric oxide). 103 mm 20 mm Electrodes with a double junction are mostly designed for measurements using ion-selective electrodes or samples sensitive to Cl - or K+. 103 mm 103 mm Banana plug Sleeve junctions...

35 mm 103 mm 185 mm Cinch plug 103 mm 103 mm 90 mm Temperature sensors 160 mm 35 mm 35 mm Salt-bridge junctions T101 E51M003 -10 – 105°C 7.5 mm Glass PYE PHM83/85 ION83/85 CDM83 T201 E51M001 -10 – 105°C 7.5 mm Glass Cinch PHM2XX CDM2XX PHM9X T202 E51M002 -10 – 105°C 7.5 mm Glass Cinch PHM2XX CDM2XX PHM9X PYE plug Type Part no. Lower diameter Junction Special features AL100 AL110 B40A520 B40A550 12 mm 8 mm Ceramic Ceramic for Ø 7.5 or 8 mm ref. electrodes AL120 B40A610 8 mm Ceramic for ref. electrodes with ground joint During measurement, the salt-bridge junction (also called liquid junction protection...

Glass pH Electrodes Red Rod glass pH electrodes BNC plug 20 mm 103 mm Certain electrodes are made with special glass for pH measurements in strongly alkaline solutions. These electrodes allow measurements within the 0 - 14 pH range without significant deviation from the theoretical response. Glass pH electrodes are always used in combination with reference electrodes. To find the right reference electrode for your application, refer to pages 8 and 9. The zero pH of Red Rod glass pH electrodes when used with their recommended reference electrode is approximately pH 6.65. The zero pH of glass pH...

Metal and Combined Metal Electrodes Single and combined metal electrodes can be used for redox measurements, redox titrations or potentiometric techniques whereas double metal electrodes are ideal for imposed current potentiometric titration. Radiometer Analytical’s electrode range features single, double and combined metal electrodes with platinum, silver, gold, antimony, mercury and glassy carbon sensing elements. Temperature range Lower diameter Reference system Liquid junction Connection Salt-bridge solution Banana plug Screw cap 2 x banana Kappa no. titrations MC408Pt* 945-390 Platinum ring...

Ion-selective Electrodes The use of ion-selective electrodes constitutes a quick and cost-effective method of determining ionic activity. Each electrode is carefully checked before packing and is delivered with an individual control report including information such as the response curve, checkpoint value and slope. 103 mm 103 mm For details of the reference electrodes recommended for use with ion-selective electrodes, please see pages 8 and 9. 103 mm Screw cap Due to their quality and diversity, Radiometer Analytical ion-selective electrodes efficiently solve various analytical problems of species...