




Hach Intellical CDC401 Laboratory 4-Poles Graphite Conductivity Cell
Intellical CDC401 is a digital, graphite, 4-pole conductivity cell with a temperature sensor. The laboratory version is available with a 3 or 1 m cable. The CDC401 is ideal for measuring electrical conductivity, salinity, resistivity, or total dissolved solids (TDS) in wastewater, drinking water, or general water quality applications.
Benefits
Intellical digital probes provide ultimate traceability in conductivity measurement history
Stored time and date stamp for each measurement, operator and sample ID, calibration history, parameter, and probe serial number.
Intellical CDC401 digital conductivity probes alert the user when re-calibration is needed
No guesswork needed to provide the most reliable and accurate results with each measurement.
Intellical CDC401 digital conductivity probes can be moved between meters without the need to re-calibrate or re-enter measurement settings
Ideal for a multi-user environment with multiple HQD series Laboratory and Portable meters.
Specifications
Technical Attributes
Accuracy | Cond: ±0.5% of reading|TDS: ±0.5% ±1 digit|Salinity: ±0.1, ±1 digit |
Cable length | 1 m or 3m |
Electrode type | Standard |
Electrode type | Conductivity Cell; 4 Poles - Graphite |
Kit? | No |
Length | 184 mm |
Measuring range | Conductivity: 0.0 µS/cm - 200 mS/cm TDS: 0.00 mg/L - 50.0 g/L as NaCl Salinity: 0 - 42 ppt or ‰ Resistivity: 2.5 Ωcm - 49 MΩcm |
Method Type | Laboratory: 4 Poles - Graphite |
Parameter | Conductivity |
Product Kit | Model: CDC401 Accessories Included: None |
Resolution | 0.01/0.1 (5 digits max.) |
Sample depth | 45 mm |
Sensor material | Noryl |
Sensor type | 4-poles conductivity probe, Graphite, k = 0.40 cm-1 |
Temperature accuracy | ±0.3 °C |
Temperature range | "-10 - 110 °C" |
Temperature resolution | 0.1 °C |
Test requirements | Parameter Needed: Conductivity Minimum Sample Depth (mm): 45 |
Thermistor | (ATC) |
Warranty | 12 months |
Weight | 0.1 kg |
What's included? | Intellical CDC401 Laboratory Conductivity Cell, 1 m cable, Test certificate, and Basic User Manual. |

Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.