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💧 Dive into precision—keep your pool perfectly balanced with every test!
Phenol Red Rapid Dissolve Tablets provide fast, accurate pH testing for pools, spas, and hot tubs within a 6.8–8.4 range. Each pre-measured tablet dissolves quickly for reliable color change, compatible with all standard comparators. Packaged in foil for freshness and safety, these 250-count tablets ensure optimal chlorine performance and water comfort with eco-friendly, interference-resistant chemistry.











| ASIN | B0C6MWYDHS |
| Best Sellers Rank | 40,636 in Garden ( See Top 100 in Garden ) 130 in Pool & Hot Tub Testers |
| Brand | TEST ALL WATER |
| Customer Reviews | 4.8 out of 5 stars 8 Reviews |
| Manufacturer | Test All Water |
| Manufacturer Part Number | 511791BT |
| Material | Phenol Red |
| Material Type | Phenol Red |
| Model Number | 511791BT |
| Recommended Uses For Product | pH, Swimming Pool Water, Spa Water, Industrial Water |
| Recommended uses for product | pH, Swimming Pool Water, Spa Water, Industrial Water |
| Sterility Rating | 6.8-8.4 |
| Unit Count | 250.0 count |
| Unit count | 250.0 count |
| pH range | 6.8-8.4 |
A**R
hot tub loves em.
they work
M**L
Very good
Easy to use
Trustpilot
3 days ago
1 month ago