




Lovibond MD100 Photometer Chlorine DUO (P)
The MD 100 colorimeter is a single parameter colorimeter for water quality analysis. This line of rugged, waterproof instruments is lightweight and ideal for field testing or for use in the laboratory.
Chlorine is one of the most popular water quality testing parameters and the MD 100 Chlorine Duo Colorimeter offers a testing solution to fit a wide variety of industries and applications.
Delivery Content
Instrument in plastic case
Chlorine Free Powder Packs
Chlorine Total Powder Packs
4 micro batteries (AAA)
3 round cuvettes (glass) with lid
2 cuvettes (plastic) with lid
Sealing rings
Brush
Instruction manual
Quick Start Guide
Certificate (COC)
Warranty information
Range: Chlorine HR PP 0.1 - 8 mg/L Cl2/Chlorine PP 0.02 - 2 mg/L Cl2
Technical Data
Optics: LEDs, interference filters (IF) and photo sensor in transparent sample chamber. Depending on the version, up to 3 different interference filters are used. Wavelength specifications of interference filters:
430 nm Δλ = 5 nm
530 nm Δλ = 5 nm
560 nm Δλ = 5 nm
580 nm Δλ = 5 nm
610 nm Δλ = 6 nm
660 nm Δλ = 5 nm
Wavelength Accuracy: ± 1
Photometric Range: -2500 - 2500 mAbs
Photometric Accuracy: 3 % FS (T = 20 °C – 25 °C)
Suitable Vials: Round Cuvettes 24 mm
Display: backlit LCD (on keypress)
Interfaces: Infrared
Operation: Foil keypad
Auto – OFF: Yes
Calibration: factory calibration and user calibration. Reset to factory calibration possible
Internal Storage: internal ring memory for 16 data sets
Power Supply: 4 micro batteries (AAA)
Battery Life Time: approx. 17 hours
Clock: Real Time Clock and Date
Portability: Portable
Environmental Conditions: Temperature: 5 - 40 °C rel. humidity: 30 - 90 % (non condensing)
Protection Class: IP 68
Compliance: CE
Dimensions: 155 x 75 x 35 mm
Sku: 276025

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.