HydroLite® HL103 meter for Dissolved Oxygen Trace2o
A simple pocket dissolved oxygen meter using an industry-standard polarographic DO probe, offering 1 or 2 point calibration using air-saturated water or zero oxygen solution.
Automatic temperature compensation, and manual salinity and barometric pressure compensation improve accuracy across the entire measurement range.
The HL103 is designed for ease of use, with auto-hold functionality to freeze a stable reading for ease of recording.
A visible battery indicator and auto-off functions effectively conserve and communicate battery life to the user.
A fully replaceable electrode module reduces maintenance costs.
Technical Specifications
| Dissolved Oxygen | |
| Range | 0.0~20.0mg/L (or ppm) |
| Accuracy | ±0.5mg/L |
| Resolution | 0.1mg/L |
| % Saturation of Oxygen | |
| Range | 0.0~200.0% |
| Accuracy | ±10% F.S |
| Resolution | 0.1% |
| Others | |
| Temperature Compensation | 0~40°C, 32~104°F |
| Barometric Pressure Correction | 60.0~112.5kPa, 450~850mmHg |
| Salinity Correction | 0~35g/L |
| Hold Function | Manual or Automatic |
| Power Off | Manual or Automatic (8 minutes after last key pressed) |
| Reset Function | Yes |
| Connector | 6-pin |
| Power Requirements | 2×1.5V "AAA" Batteries |
| Battery Life | Approximately 150 hours |
| Dimensions | 175(L)×40(Dia.)mm |
| Weight | 100g |
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.