


Lovibond MD 200 2 in 1 Hydrogen Peroxide / pH
The MD 200 photometer can be used in practically any area of water analysis.
A waterproof (IP68) housing, high precision interference filters and LEDs used give robustness, reliability, accuracy, and confidence in results.
A backlit screen, 4 button keypad, scroll memory function which saves the last used parameter, and one time zero for switching between methods make the unit easy to use and ideal for testing in any environment.
Results containing date and time can be stored in the on-board memory and can also be downloaded via an infra-red unit (IRiM) for later review in excel or notepad.
With the added reliability of the Lovibond liquid reagents the MD 200 is the ideal choice for photometric Hydrogen Peroxide and pH testing.
Test / Range
Hydrogen Peroxide 1-500 mg/l
pH Value 6.5-8.4
Delivery Content:
4 batteries (AA)
3 Round vials (Glass) 24mm ∅ with lids
3 Round vials (Glass) 16mm ∅ with lids
Liquid reagents for each test
Crushing / Stirring Rod
Guarantee sheet
Certificate (COC)
Instruction manual
Specifications
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
610 nm Δλ = 6 nm
Wavelength Accuracy: ± 1 nm
Photometric Range: -2500 - 2500 mAbs
Photometric Accuracy: 3 % FS (T = 20 °C – 25 °C)
Operation: Foil keypad
Display: backlit LCD (on keypress)
Suitable Vials: Round Cuvettes 24 mm
Calibration: Factory calibration and user calibration. Reset to factory calibration possible.
Interfaces: Infrared
Internal Storage :internal ring memory for 16 data sets
Power Supply: 4 batteries (AA)
Battery Life Time: approx. 53 hours
Auto – OFF: Yes
Clock: Real Time Clock and Date
Portability : Portable
Environmental Conditions : temperature: 5 - 40 °C rel. humidity: 30 - 90 % (non condensing)
Compliance : CE
Protection Class: IP 68
Dimensions: 110 x 55 x 190 mm
Weight: 455 g
Replacement Reagents
424991 Hydrogen Peroxide Reagent Solution 15 ml
471040 Phenol Red Liquid Solution 15ml
NOTE:
There has recently been an amendment to the UK Poisons Act 1972 regarding the supply of Explosives precursors which comes into effect from October 1st 2023 and covers the supply of certain materials.
In order to comply with these regulations we kindly ask that you complete the following actions as quickly as possible in order to avoid disruption to supply.
- Please complete this form, along with a copy of a photographic ID (such as a passport, driving licence, trade ID card, business ID card) for the individual that your company authorises to purchase these materials.
- You will need to understand your legal obligations under the Act, particularly in regard to the reporting of loss, theft or suspicious activity.
- If you are reselling these materials then you may need to obtain and retain the same information from your customers.
Further information can be found at https://www.gov.uk/government/publications/supplying-explosives-precursors/supplying-explosives-precursors-and-poiso

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.