$12.99
See if it's really the one
Search with this product to compare it, find similar styles, or turn up something better before deciding.
Replacement Test Kit Refills for Swimline Hydrotools 8440 OEM Replacement Test Kit Refills for the Hydrotools 8440 5 in 1 Test Kit. Includes: 1 oz. bottles - OTO, Phenol Red PH, Acid Demand & Alkalinity 1/2 oz. bottles - Chlorine Neutralizer Total Alkalinity SKU: 8445
Have a question about this?
We currently ship within the US, with more countries coming soon.
Final cost and dates are confirmed at checkout.
🇺🇸 Ship from USA · On Agora since 2026
$12.99