PH/ORP Sensor Guide
Learn about pH and ORP in this guide, including: how pH/ORP probes work, how to interface with pH/ORP probes, how to care for probes, and more.
Products for USB Sensing and Control
The 3556 is an economical combination electrode ideal for general industrial processes. It is well suited for testing pool water chlorination, ozone treatment (aquariums, water disinfection).
The electrode provides a fast, stable response and is ideal for prolonged ORP readings. The sealed, high polymer gel-filled design requires virtually no maintenance as there is no need to refill the reference chamber.
The outer tube is made of strong PPS plastic and is threaded (3/4" NPT pipe thread) for ease of installation.
This product comes with a small container of buffer solution. Fill the sensor cap with the buffer solution and let it soak between uses.
This probe connects to the BNC connector on our pH interface boards. See the Connection & Compatibility tab for a complete list of options.
This ORP electrode creates a voltage differential that can be read by one of our pH/ORP interfaces:
| Electrode Properties | |
|---|---|
| Electrode Type | Combination Single-Junction (ORP) |
| ORP Measurement Range | ± 1.5 V DC |
| Electrode Response Time Max | 10 s |
| Operating Temperature Min | 0 °C |
| Operating Temperature Max | 110 °C |
| Physical Properties | |
| Exterior Tube Material | PPS Plastic |
| Maximum Pressure | 87 psi |
| Connector Type | BNC |
| Rear Thread Type | 3/4" Pipe Thread |
| Length | 160 mm |
| Diameter | 29.3 mm |
| Cable Length | 6 m |
| Customs Information | |
| Canadian HS Export Code | 9027.89.00 |
| American HTS Import Code | 9027.89.45.30 |
| Country of Origin | CN (China) |
| Product | Electrode Properties | Physical Properties | ||
|---|---|---|---|---|
| Part Number | Price | Electrode Type | Operating Temperature Max | Exterior Tube Material |
 pH Lab Electrode
|
$25.00 | Combination Single-Junction (pH) | 80 °C | Impact Resistant Plastic |
