




Elite CTS Conductivity / TDS / Salinity Pin-sensor Pocket Testers and Replacement Sensors
Benefit from these pocket-sized testers. Thermo Scientific™ Elite testers are designed to provide on-the-go measurements for a variety of applications including homebrew beer and wine, food and beverage, hydroponics, aquaculture and aquariums, agriculture, pools and spas, environmental monitoring, education and more. The Elite CTS cup-sensor pocket testers are ideal for flexible on-the-go conductivity, TDS, salinity and temperature testing in a compact, travel-ready design.
Elite Pocket Testers offer flexible on-the-go electrochemical testing. Choose the Elite CTS pin-sensor model to measure conductivity, total dissolved solids (TDS) or salinity with temperature using a pin-style direct-measure sensor design for your application. Elite pocket testers are durable, with a large backlit screen, one-touch calibration feature and replaceable sensor heads. They are ideal for testing beverages including homebrew beer and wine, food, hydroponics, aquaculture and aquariums, environmental monitoring and more.
- Flexible testing option
- Measure conductivity, TDS or salinity with temperature
- Large back-lit graphic display
- Uses 4 x AAA alkaline batteries
- Average 150 hours of battery life
- Wide leak-proof cap serves as stable base
- Replaceable sensors

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.