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WTW pH Electrodes and Accessories

SenTix® pH electrodes

pH electrodes for every application
SenTix® quality electrodes by WTW – convenient measurement and precision.

Low-resistance glass membranes guarantee stable measuring signals even at low temperatures.
Silver ion-free reference electrolyte, together with the proven platinum wire diaphragm, prevent measurement problems by precipitating silver compounds.
Functional slide for accessing the refill opening for electrodes with liquid electrolyte.
Typical connections: Waterproof DIN connector, BNC connector, fixed cable ( 1 or 3 m) or connector head ( S7 or SMEK) .

Low-maintenance pH electrodes with gel electrolyte

SenTix® 20
SenTix® 21
SenTix® 21-3
SenTix® 22
SenTix® 41
SenTix® 41-3
SenTix® 42
SenTix® F
SenTix® F-3

Ideal for portable measurements, as well as for routine measurements in-the-laboratory. With or without built-in temperature probe all electrodes have robust plastic shafts and a low-maintenance gel reference system.
New: The SenTix® F with temperature-stable iodine/ iodide system, specifically for measurements at changing temperature conditions.

SenTix® all given models above
pH 0 ...14 pH
° C 0 … 80 ° C

Fast and precise – pH electrodes with liquid electrolyte

SenTix® 51
SenTix® 52
SenTix® 60
SenTix® 61
SenTix® 62
SenTix® 81
SenTix® 82
SenTix® 91
SenTix® 92
SenTix® L

For demanding measurements in-the-laboratory. SenTix® electrodes with liquid electrolyte, an easy-to-clean glass shaft and platinum diaphragm can be used even for complicated samples. For those who need an electrode with liquid electrolyte for a portable measurement: The SenTix® 51/ 52 with plastic shaft, built-in temperature probe and ceramic diaphragm is suited for nearly any measuring task.

SenTix® 51/ 52 60/ 61/ 62 81/ 82 91/ 92 L
pH 0 ...14 pH 0 ...14 pH 0 ...14 pH 0 ...14 pH 0 ...14 pH
° C 0 … 80 ° C 0 ...100 ° C 0 ... 100 ° C 0 … 100 ° C 10 … 100 ° C

Specialists for every situation - pH electrodes for special applications

SenTix® H
SenTix® HW
SenTix® HWS
SenTix® SP
SenTix® SP-DIN
SenTix® Sur
SenTix® FET-D
SenTix® FET-B

SenTix® Mic
SenTix® Mic-D
SenTix® Mic-B
SenTix® RJS
SenTix® pH
SenTix® R
SenTix® B
SenTix® V

Special samples need special electrodes. SenTix® Special Electrodes can take on the challenges associated with measuring the pH value of surfaces, solids, suspensions, emulsions, low ionic samples, smallest volumes and more. For those who require a non-glass electrode: The SenTix® FET can be used with every WTW pH meter.

SenTix® H HW HWS SP( -DIN) Sur FET-D/ FET-B
pH 0 ...14 pH 0 ...14 pH 0 ...14 pH 2 ...13 pH 2 ...13 pH 0 … 14 pH
° C 0 … 80 ° C 0 ... 60 ° C -5 … 100 ° C 0 ... 80 ° C 0 ... 50 ° C 0 ... 60 ° C

SenTix® Mic Mic-D/ Mic-B RJS pH R B V
pH 0 ...14 pH 0 ...14 pH 2 … 13 pH 0 … 14 pH — — 0 … 14 pH
° C 0 ... 100 ° C -5 … 100 ° C 0 ... 80 ° C 0 ... 80 ° C -5 … 100 ° C -5 … 100 ° C 0 … 80 ° C