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Your cart is empty.Built with proprietary sensor technology and materials from Switzerland, Apera LabSen 211 pH Electrode is ideal for professional lab and field pH measurement of general water solutions. LabSen S-type hemispherical glass membrane - low resistance and high firmness, rendering fully stabilized readings in 15 to 30 seconds, and is yet 10 times stronger than traditional glass membranes, highly resistant to general impact, eliminating the chance of accidental breakage. Long-Life Reference System - composed of a glass tube, AgCl, and a reference silver wire. The top end of the slim glass tube is stuffed with cotton, which prevents the reaction between AgCl and electrolyte when the temperature changes. It improves the stability of reference electrode and extends the service life of the electrode. The electrode uses a standard BNC connector, compatible with any pH meters that use BNC connectors. No temperature sensor is built-in. Users need to have a separate temperature probe (ex: Apera MP500) to enable ATC or manually input temperature to achieve temperature compensation.
Loris Trambusti
Reviewed in Italy on May 10, 2024
Faccio questa recensione dopo oltre due anni dall'acquisto e del suo uso, messa in acquario su Phmetro Dupla in servizio continuo 24h al giorno, la calibrazione la faccio ogni 2/3 mese ma più che una calibrazione è una verifica in quanto molte volte non ho bisogno di ricalibrare, la risposta è molto rapida e sono molto soddisfatto di questa sonda sicuramente a fine vita ne acquisterò un'altra uguale anche se nel fra tempo ha subito un notevole aumento di prezzo, comunque ancora fa egregiamente il proprio lavoro solo ora e solo per scrupolo sostituirò la soluzione di riferimento che non ho mai sostituito.I miei parametri di utilizzo sono in acqua addizionata con CO2 per avere un Ph costante di 6.7 con un isteresi di -0.05
Helmut Bauer
Reviewed in Germany on January 31, 2021
Alles in Ortnung
ryan c
Reviewed in the United States on June 28, 2020
Probe isnt impact resistant. Glass tip breaks easily. Have to calibrate 1 - 2 times a month due to slippage. I used the probe only 3 months before glass tip broke off in nutrient bucket.
DisseminateJoy
Reviewed in the United States on December 26, 2017
Calibration tests were perfect, this is lightweight, strong, and solid. The glass tip is nice.Works well, would like to see a slightly stronger stress reliever on the BNC connector, other than that, I would be pressed to find anything wrong with this
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