








Palintest Magnesium Photometer Reagents
The AP193 reagent has transitioned from a tableted format to a liquid formulation.
This change has been implemented to improve the consistency and reliability of manufacturing. The liquid format offers better process control and ensures more uniform reagent performance across production batches.
Impact on Us
- The test procedure has updated because of this reformulation and will be a marked as a new test on Lumiso Expert. The latest firmware will be made available from the website to use the liquid version test when live.
- Updated Instructions will be shared in due time with the instrument firmware showing the new tests when its live - Customers should ensure that relevant staff are familiar with the revised procedure and update any internal documentation accordingly.
- The test time has shortened from 5 minutes to 2 minutes.
- Customers may continue using any remaining stock of previous reagent format as usual for their testing
Key Details
- New Product Code: AP193L - Old Format: One Tablet - New Format: Two liquid with a tablet
- Performance: Maintains the same testing capabilities
- Shelf Life and Storage: 1 Year minimum with extension based on stability trials
- Packaging: Updated to reflect the liquid format
- The liquid version test is exclusively in the AP pack size as AP193L (250 tests).
Range: 0 - 100 mg/L MgCO3
Photometer Reagents
Different size boxes available including 50 & 250
AP 193: 250 Pack - For this item we have been given an estimated ship date from Palintest ’s Warehouse of the 7th October 2025
PM 193: 50 Pack - To be discontinued

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.