BlueLine IDS pH electrodes

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IDS pH electrodes reliable and precise pH measurements with automatic electrode recognition

IDS electrodes reliable and precise pH measurements with automatic electrode recognition

Each ID sensor is equipped with a transponder, which carrys the relevant information such as type and serial number as well as the date and result of the last calibration. The exchange of this data between ID sensor and ID measuring instrument is fully automatic. Please note an IDS compaible meter is required to use these electrodes
The ID sensors tranfer their own specific data onto the ID instrument. This increases the reliability and convenience enormously. An ID instrument can connect to multiple ID sensors or one ID sensor can be used on multiple instruments with recognition, without having to recalibrate at every exchange.
With every new calibration the calibration data on the sensor is updated. For any following meausement the ID instrument use the new calibration.
When ID sensors and ID instruments are used, the calibration and measurement report will also state type and serial number of the electrode, and it will state date, time and measuring value.

Which pH meter/electrode do I need?...

Making sure you have the right electrode and meter for your application can be confusing, not to mention correct maintenance and what to do if you are having issues. You can find links to our support guides below to help you through the process.

If you are after an electrode selector guide for some of our most popular electrodes and what applications they are recommended for you can find that below.

Electrode Selector Guide


An introduction to pH pH, put simply is a measure of how acidic or basic a solution is. It is a measure of H⁺ions present. pH can be measured in a number of ways including test strips, indicator solution or with a pH meter and electrode. If you want to read more about the pH and the pros and cons of these methods, you can check out our introduction guide here.	How to take a pH reading and care for your electrode pH electrodes require the correct storage and regular calibration. If you have a pH meter or are looking to purchase and need to find out more about the care and maintenance process then you can read our guide here. We also include a troubleshoot sections with the most reported issues and possible solutions.	Selecting the right electrode and meter for your application So you have decided you need to purchase a pH meter with electrode, but with such a wide selection out there, how do you know which is right for you? You can read our guide on the differences between electrodes and what applications different features are good for. We also have an electrode selection guide for some of our most popular electrodes.
Related Products
pH Buffers	Electrode Storage Solution	Electrode Cleaning Solution

If you require any further assistance, or extra information you can request that here and one of our trained technical specialists will be in contact. Please provide as much detail as possible so that we can get back to you with the right information.

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Cross-Reference Tables

Contains older SI Analytics products being replaced by WTW products.

BlueLine Laboratory Electrodes with Glass Shaft
Old Code	Old model	New Code	New model
285129311	BlueLine 31 RX	103648	SenTix® ORP
285095730	BlueLine 15 pH Ci	103813	SenTix® 86
285095740	BlueLine 15 pH NTC10	103814	SenTix® 87
285129114	BlueLine 11 pH	103639	SenTix® 60
285129122	BlueLine 12 pH	103640	SenTix® 61
285129139	BlueLine 13 pH	103650	SenTix® HW
285129440	BlueLine 14 ID	285130275	A 162 2M DIN-ID
285129147	BlueLine 14 pH	103642	SenTix® 81
285129155	BlueLine 15 pH	103643	SenTix® 82
285129163	BlueLine 16 pH	103647	SenTix® Mic
285129171	BlueLine 17 pH	103641	SenTix® 62
285129188	BlueLine 18 pH	103810	SenTix® 83
285129190	BlueLine 19 pH	103811	SenTix® 84
285129490	BlueLine 19 pH NN	103812	SenTix® 85
285129274	BlueLine 27 pH	103646	SenTix® Sur

BlueLine Field Electrodes with Plastic Shaft
Old Code	Old model	New Code	New model
1063462	BlueLine 23 pH 2m	103632	SenTix® 21-3
1065895	BlueLine 29 pH	103806	SenTix® 44
285095712	BlueLine 26 Ci	103807	SenTix® 46
285095760	BlueLine 26 pH NTC10	103808	SenTix® 47
285111145	TopLine 24 pH	103816	SenTix® Top 41
285111150	TopLine 24 pH IDS	103744	SenTix® Top 940
285111165	TopLine 26 pH Chinch	103817	SenTix® Top 46
285129212	BlueLine 21 pHT DIN-N	103733	SenTix® Sp-T
285129217	BlueLine 21 pH	103645	SenTix® Sp
285129225	BlueLine 22 pH	103630	SenTix® 20
285129233	BlueLine 23 pH	103631	SenTix® 21
285129241	BlueLine 24 pH	103635	SenTix® 41
285129258	BlueLine 25 pH	103633	SenTix® 22
285129266	BlueLine 26 pH	103637	SenTix® 42
285129282	BlueLine 28 pH	103805	SenTix® 43
285129320	BlueLine 32 Rx	103815	SenTix® Rx
285129321	BlueLine 32 Rx IDS	103792	SenTix® Rx-T 900
285129460	BlueLine 54 pH	103651	SenTix® 51
285129533	BlueLine 24-3 pH	103636	SenTix® 41-3
285129640	BlueLine 56 pH	103652	SenTix® 52
285129660	BlueLine 56 pH NTC10	103809	SenTix® 57

ScienceLine
Old Code	Old model	New Code	New model
1054512	N 1052 A	285130275	A 162 2m DIN ID
1061051	Ag CL 65 (Pt Dia)	285102413 + 285215229	AgCl 62 + TZ 1520
1070028	B 2420 +	1070075	B 3920 +
285100248	H 65	285100215 + 285215229	H 62 + TZ 1520
285100437	N 42 A	285100042 + 285122456	N 6280 + Cable L1A
285100445	N 48 A	285101211 + 285122456	L 6880 + Cable L1A
285100494	N 52 A	285100034 + 285122456	N 62 + Cable L1A
285101252	L 7780	285101260	A 7780
285101544	N 42 BNC	285100042 + 285122497	N 6280 + Cable L1BNC
285101569	N 48 BNC	285101211 + 285122497	L 6880 + Cable L1BNC
285102051	Ag 42 A	285102343 + 285122456	Ag 6280 + Cable L1A
285102130	Pt 7780 3Ker	285102281	Pt 8280
285102216	Ag 6580	285102343 + 285215229	Ag 6280 + TZ 1520
285102232	Pt 6180	285102002	Pt 61
285102257	Pt 6580	285102249 + 285215229	Pt 6280 + TZ 1520
285102302	Pt 42 A	285102249 + 285122456	Pt 6280 + Cable L1A
285102516	N 6580	285100042 + 285215229	N 6280 + TZ 1520
285102808	NH 1100	106395	NH 500/2
285103537	Pt 1400	285103512 + 285215229	Pt 1200 + TZ 1520
285105451	N 52 BNC	285100034 + 285122497	N 62 + Cable L1BNC
285106037	LF 513 T	285106131	LF 613 T
285106148	LF 413 T-3	301970	TetraCon® 325-3
285106150	LF 213 T	301962	LR 325/001
285106160	LF 213 T-ID	301962	LR 325/001
285106172	LF 413 T	301960	TetraCon® 325
285106250	LF 813 T	285106131	LF 613 T
285130100	L 6880 1m DIN ID	285101211 + 285122456	L 6880 + Cable L1A
285130110	L 6880 1m BNC ID	285101211 + 285122497	L 6880 + Cable L1BNC
285130160	A 157 1m DIN ID	285101335	SCPpHT-MIC-AMF-3M-DIN-N
285130170	A 157 1m BNC ID	285101340	SCPpHT-MIC-AMF-3M-BNC-N
285130240	A 161 1m DIN ID	285101320	SCPpHT-A170MF-3M-DIN-N
285130250	A 161 1m BNC ID	285101315	SCPpHT-A170MF-3M-BNC-N
285130280	A 164 1m DIN ID	103731	SenTix® HWD
285130300	LF 313 T-ID	301961	LR 325/01
285130310	LF 413 T-ID	301960	TetraCon® 325
285414351	LF 313 T-NFTC	301961	LR 325/01
285414360	LF 313 T	301961	LR 325/01

Analog Portables pH/ORP
Old Code	Old model	New Code	New model
285202370	HandyLab 100/K	2AA310	pH 3310
285204500	HandyLab 100 ROUTINE	2AA310 + 103642	pH 3310 + SenTix® 81
285204510	HandyLab 100 FIELD	2AA312	pH 3310 Set 2
285204520	HandyLab 100 VERSATILE	2AA310 + 285101290	pH 3310 + A 7780 NTC30-DIN-N
Analog Portables Conductivity
Old Code	Old model	New Code	New model
285202380	HandyLab 200/K	2CA300	Cond 3310
285204530	HandyLab 200 ROUTINE	2CA301	Cond 3310 Set 1
285204540	HandyLab 200 VERSATILE	2CA301	Cond 3310 Set 1
285204550	HandyLab 200 PUREWATER	2CA300 + 301961	Cond 3310 + LR 325/01
Analog Benchtop Meters pH/ORP
Old Code	Old model	New Code	New model
285206300	Lab 855	1AA110	inoLab® pH 7110
285206310	Lab 865	1AA310	inoLab® pH 7310
285206700	Lab 855 Set	1AA114	inoLab® pH 7110 Set 4
285206710	Lab 865 Set	1AA314	inoLab® pH 7310 Set 4
285206810	Lab 845 Set/BL 19 pH	285206470 + 103811	Lab 845 + SenTix® 84
285206820	Lab 845 Set/BL 25 pH	285206470 + 103633	Lab 845 + SenTix® 22
285206830	Lab 845 Set/BL 29 pH	285206470 + 103806	Lab 845 + SenTix® 44
Analog Benchtop Meters Dissolved Oxygen
Old Code	Old model	New Code	New model
285206800	Lab 745 Set	1BA301	inoLab® Oxi 7310 Set 1
Analog Benchtop Meters Conductivity
Old Code	Old model	New Code	New model
285206340	Lab 955	1CA100	inoLab® Cond 7110
285206760	Lab 955 Set	1CA101	inoLab® Cond 7110 Set 1
285206840	Lab 945 Set/LF435T	285206480 + 285206420	Lab 945 + LF435T

Digital Multi-Parameter Portables
Old Code	Old model	New Code	New model
285202390	HandyLab 600/K	2FD350	MultiLine® 3510 IDS
285202400	HandyLab 680/K	2FD560	MultiLine® 3620 IDS
285204560	HandyLab 600 ROUTINE	2FD350 + 103780	MultiLine® 3510 + SenTix® 980
285204570	HandyLab 600 FIELD	2FD351	MultiLine® 3510 Set 1
285204580	HandyLab 600 VERSATILE	2FD350 + 103743	MultiLine® 3510 IDS + SenTix® 945
285204630	HandyLab 600 FOOD	2FD350 + 103752	MultiLine® 3510 + SenTix® Sp 900-T
285204670	HandyLab 680 pH FIELD	2FD560 + 103740	MultiLine® 3620 IDS + SenTix® 940
285204680	HandyLab 680 pH VERSATILE	2FD560 + 301710 + 103743	MultiLine® 3620 IDS + TetraCon® 925 + SenTix® 945
285204730	HandyLab 680 pH FOOD	2FD560 +103752	MultiLine® 3620 IDS + SenTix® Sp 900-T
285204760	HandyLab 680 COND VERSATILE	2FD560 + 301710	MultiLine® 3620 + TetraCon® 925
285204770	HandyLab 680 OX VERSATILE	2FD560 + 201300	MultiLine® 3620 + FDO 925
285204780	HandyLab 680 pH/COND PW	2FD560 + 301720 + 103753	MultiLine® 3620 + LR 925/01 + SenTix® HW-T 900
285204790	HandyLab 680 pH/COND VERSAT	2FD56C	MultiLine® 3620 Set C
285204800	HandyLab 680 pH/OX VERSAT	2FD560 + 201300 + 103743	MultiLine® 3620 IDS + FDO 925 + SenTix® 945
285204810	HandyLab 680 pH/COND/OX VER	2FD56G	MultiLine® 3620 Set G
Digital Multi-Parameter Benchtop Meters
Old Code	Old model	New Code	New model
285206320	Lab 875	1FD350	inoLab® Multi 9310 IDS
285206330	Lab 875P	1FD350P	inoLab® Multi 9310P
285206350	ProLab 2500	1FD570	inoLab® Multi 9630 IDS
285206720	Lab 875 pH Set	1FD352	inoLab® Multi 9310 Set 2
285206730	Lab 875 Cond Set	1FD353	inoLab® Multi 9310 IDS Set 1
285206740	Lab 875P pH Set	1FD350P + 103780	inoLab® Multi 9310P + SenTix® 980
285206750	Lab 875P Cond Set	1FD350P + 301710	inoLab® Multi 9310P + TetraCon® 925
285206770	ProLab 2500 p-Set	1FD570 + 103780	inoLab® Multi 9630 IDS + SenTix® 980
285206780	ProLab 2500 p/C-Set	1FD56C	inoLab® Multi 9620 IDS Set C
285206790	ProLab 2500 p/C/O-Set	1FD57K	inoLab® Multi 9630 IDS Set K

IDS Sensors
Old Code	Old model	New Code	New model
285106290	LF 413T 3M FORK IDS	301719 + 903851	TetraCon® 925/LV-P + AS/IDS-3
285129210	BlueLine 21 pH IDS	103752	SenTix® Sp-T 900
285129240	BlueLine 24 pH IDS	103740	SenTix® 940
285129243	BlueLine 24-3 pH IDS	103741	SenTix® 940-3
285129270	BlueLine 27 pH IDS	108130 + 103646	ADA S7/IDS and SenTix® Sur
285129310	BlueLine 31 RX IDS	103791	SenTix® ORP-T 900
285129321	BlueLine 32 Rx IDS	103792	SenTix® Rx-T 900
285129140	BlueLine 14 pH IDS	103780	SenTix® 980
285202410	LF 413 T IDS	301710	TetraCon® 925
285202420	LF 413 T 3M IDS	301711	TetraCon® 925 -3
285202430	LF 313 T IDS	301720	LR 925/01
285202440	FDO 1100 IDS	201300	FDO® 925

Buffers and Solutions
Old Code	Old model	New Code	New model
285126540	Conductivity Solutions	300508	KS 5µ
285137677	Standard Buffer L 168 4	109000	PL 2
285138008	Standard Buffer L 401 4	109110	PL 4
285138016	Standard Buffer L 687 4	109120	PL 7
285138024	Standard Buffer L 918 4	109130	PL 9
285138032	Technical Buffer L 400 4	108700	TEP 4.01 Trace
285138049	Technical Buffer L 700 4	108702	TEP 7.00 Trace
285138057	Technical Buffer L 100 4	108703	TEP 10.01 Trace
285138295	Cleaning Solution L 510 4	109648	Pep/pH
285138419	Electrolyte Solution L 301 4	109705	KCl-250
285138505	Electrolyte Solution L 300 8	109706	KCl-50
285139156	Technical buffer solutions LC4004K	108800	TPL 4.01 Trace
285139189	Technical buffer solutions LC7004K	108803	TPL 7.00 Trace
285139218	Technical buffer solutions LC1004K	108805	TPL 10.01 Trace
Accessories
Old Code	Old model	New Code	New model
285122940	Z 503	903843	pH/ MCS
285201520	Z 865	109813	STH 9400
285201530	Z 870	250049	P 3002
285202470	Z 389	902780	SM Pro
285202480	Z 530	2F0004	KS MultiLine® 2
285204889	Z 850	900867	NT Multirange
285206360	Z 600	108131	ADA 94pH/IDS DIN
285206370	Z 610	250115	RP 58 HQ