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Your cart is empty. Apera Instruments 201-C Combination pH Electrode is made for general water solutions' pH measurement in scientific research, environmental monitoring, and quality control. Apera's special lithium glass membrane ensures low impedance (as low as 50 Ohm) and stable potentials, which helps generate quick and stable pH readings.
Detachable sensor shield is built upon the sensitive glass membrane to protect it from accidental damage.
Standard BNC connector, compatible with any pH meters that adopt BNC connectors. Measurement Range: 0–14 pH, 0–80˚C (32–176˚F); Housing: Polycarbonate; Junction: Ceramic; Reference Electrode: Ag/AgCl; Connector: BNC; Size: ø12*160 mm; Cable: 3 Ft; Temperature sensor: N/A.
Not suitable for testing in highly corrosive or viscous liquids, or for continuous testing in high-temperature solutions (>140˚F). The product is CE and RoHS certified and is manufactured under an ISO 9001: 2015 certified quality system.Not suitable for testing in low-ion concentration solutions (eg deionized water or distilled water) strong base solutions (pH>12) highly corrosive liquid or for continuous testing in high temperature solutions (>140˚F) The product is CE and RoHS certified and is manufactured under an ISO 9001 2015 certified quality system
Works accurately
2025-09-06 15:24:13
I've used this brand longer than any others before needing to replaceThey work soo good...guaranteed true ph readings
pyrotec
2025-08-19 15:44:19
So far this is the least expensive, accurate, and durable B*Labss replacement probe I've found! Easy to clean, holds up to rough daily use, and maintains accuracy throughout the calibration duration. Love'em!
Frank yousif
2025-07-11 11:56:37
This PH pan is very cheap first of all the wire. It’s very short second ball. It gives you off numbers I definitely do not recommend it.
JHZ
2025-06-30 12:06:12
$$ compared to $$$, and it works well!
360groundup
2025-06-19 17:39:42
The first one I ordered lasted 6 months, which I thought was pretty good given all of the long term issues associated with inexpensive pH probe technology. Yes, the cord is short but you can extend it with a bnc coax cable. The second one I bought just failed after two months, a bit disappointed. They were kept in KCl storage solution and never allowed to dry out. I like that there is a removable shroud around the glass probe for ease of cleaning. I will order another to keep the experiment going….
SAMUEL MILLS
2025-05-31 15:01:24
I've bought a dozen or so of these probes over the past year or so for our Service Technicians who use them in the field to measure pH of produced water from oil wells. I decided on this brand because they are less expensive than the Oakton probes but can be used with the Oakton meters. I first bought one for myself to test in the field and I found them to work as well as the Oaktons. However, over time these probes have proven to be less durable than the Oaktons and I have also come across a couple of them that are defective right out of the box. The durability issue has to do with the plastic. The plastic tends to wear out faster. This was reported to me by our QC lab technician who I gave a couple of them to to use in the lab. Versus the Oaktons, the Apera probes do not stand up as well. I'm not suggesting anyone not buy these probes, but based on my experience with them they are cheaper for a reason.
jblues
2025-05-07 16:31:16
Only have been using a few days. I will update again should my experience change. I find it stable. I use it permanently in my hydroponic system along with a scientific atlas board and an esp. appears to be well sealed.
Steve
2025-04-06 18:26:23
Very easy use and accurate
Darwin Alexander Cordova López
2025-02-18 13:24:50
El producto llevó bien y se ve bien, la calidad es adecuada para el precio y lo compre principalmente porque mi equipo habÃa roto la pelotita que estaba en la parte inferior del electrodo y el modelo estaba en 5mil pesos y encontré esta opción y sirvió perfecto por lo que me salvo la vida
rob
2025-01-29 17:29:55
Only used a few times so far. Works good. Packaging was good and has a nice plastic container to keep your probe wet. Time will tell if keeps working
FRANCISCO JAVIER BENEDICTO CANO
2025-01-26 10:44:56
La calibracion ha sido rapida y perfecta junto con el liquido 7.0 de la misma marca.Clorador salino funcionando bien en 7,3.El tiempo dira si es buena y cuanto dura.Cuando pase el verano ampliare informacion.Precio muy bueno, bien empaquetado.
FrBe
2024-12-15 14:09:07
hab sie Sonde nun die ganze Saison iin Betrieb, funkt einwandfreiabsolute Kafempfehlung
Franck M
2024-11-12 10:08:05
Bon produit qui fait le job . Par contre attention à la longueur du câble de raccordement: environ 1m
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