




Lovibond Phenol Red Photometer pH Reagents
Lovibond Phenol Red Photometer pH Tablets are an essential reagent for precise and reliable pH measurement in water testing using photometric analysis.
These high-quality tablets are designed to deliver accurate pH readings, helping ensure optimal water chemistry in various applications such as swimming pools, spas, and industrial water systems.
These tablets change colour when dissolved in the water sample for easy handling, application and reading of results.
Suitable for PHOTOMETERS ONLY
Key Features:
- Accurate pH measurement 6.5-8.4
- Photometer compatible
- Convenient and easy to use
- Stable and reliable
- Safe and environmentally friendly
Ideal for use in:
- Swimming pools and spas
- Industrial water systems
- Drinking water treatment
- Aquaculture
Different size boxes available including 50, 100, 250 & 500
511772BT: 500 pack
511771BT: 250 pack
511770BT: 100 pack
511771-1BT: 50 Pack

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.