Pool pH Liquid Test Phenol Red Reagent (15ml)
Keep your pool water perfectly balanced with our Pool Water Liquid Test Kit!
Pool pH Liquid Test (15ml)
Highlights:
✅ Lab-Grade Accuracy – Phenol Red reagent delivers reliable pH readings (6.5–8.5) to prevent corrosion, scaling, or irritation.
✅Long-Lasting Value – 144 tests per bottle (only 5 drops per test)—more economical than test strips!
✅ColorQ Photometer Compatible – Works seamlessly with ColorQ digital testers for ultra-precise results.
✅Easy to Use – Simply add 5 drops to a water sample, compare to the color chart, and adjust chemicals as needed.
✅Compact & Leak-Proof – Durable 15ml bottle fits in any pool maintenance kit.
Pool pH Liquid Test – Phenol Red Reagent (15ml) | Precise Water Balance Testing for Pools & Spas
Product Description
Maintain perfectly balanced pool water with our professional Pool pH Liquid Test Reagent. This high-precision Phenol Red solution allows you to accurately measure pH levels between 6.5 to 8.5—ensuring optimal water quality for swimmer comfort and equipment longevity. Compatible with ColorQ photometers and traditional test kits, this 15ml bottle delivers 144 tests (just 5 drops per test), making it a cost-effective essential for any pool owner or maintenance professional.
Key Features
✔ Lab-Grade Accuracy – Phenol Red reagent delivers reliable pH readings (6.5–8.5) to prevent corrosion, scaling, or irritation.
✔ Long-Lasting Value – 144 tests per bottle (only 5 drops per test)—more economical than test strips!
✔ ColorQ Photometer Compatible – Works seamlessly with ColorQ digital testers for ultra-precise results.
✔ Easy to Use – Simply add 5 drops to a water sample, compare to the color chart, and adjust chemicals as needed.
✔ Compact & Leak-Proof – Durable 15ml bottle fits in any pool maintenance kit.
How to Use
Collect Water – Fill a test vial with pool or spa water.
Add Reagent – Drop 5 drops of Phenol Red into the sample.
Mix & Compare – Swirl gently and match the color to your test kit’s pH chart (or use a ColorQ photometer).
Adjust pH – If outside the ideal range (7.2–7.6), add pH increaser or decreaser.
Ideal Applications
Residential Pools – Keep water comfortable and safe for family and friends.
Commercial Pools & Spas – Maintain compliance with health regulations.
Pool Service Pros – A must-have for efficient, accurate water testing.
Hot Tubs & Water Features – Prevent damage from imbalanced pH.
Why Choose This pH Test Reagent?
✅ Scientifically Accurate – Trusted by pool professionals worldwide.
✅ Saves Money – Outperforms test strips in cost per test.
✅ Prevents Damage – Balanced pH protects liners, pumps, and heaters.
Achieve perfect water chemistry—order your Pool pH Liquid Test today!
- 15ml
- Three different bottle options styles to choose from
- You can choose OEM logo or neutral logo

Related Water Test Strips
Our Innovations
Key Features for Pool & Spa Excellence
Pool-Specific Testing
Focused on chlorine, pH, bromine, alkalinity, and other parameters vital for safe, crystal-clear water.
Multi-Parameter Flexibility
From single tests to 7-in-1 panels, tailor strips to your maintenance routine.
Spa & Hot Tub Ready
Resistant to high temperatures and formulated for accurate readings in spa environments.
Instant Insights
Color-coded results in seconds, enabling quick adjustments to prevent algae, irritation, or equipment damage.
Applications
The design of these Water Test Strips balances precision and convenience, making them suitable for a wide range of water testing scenarios, thus meeting the needs of pool, spa, and hot tub owners for comprehensive and accurate water quality monitoring.

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Humidity-resistant strips provide ±0.1 pH accuracy at 40°C, monitoring bromine and active oxygen levels in steam-rich environments.

Industrial-grade strips measure phosphate (0-10 ppm) and magnesium (0-150 ppm) with ±2% reproducibility under extreme TDS conditions.
ODM&OEM Service
AQUAPROBE offers Tailored Water Test Strips for Swimming Pools, Spas, and Hot Tubs, allowing users to customize their testing needs. Customization options include, but are not limited to:

Test Parameter Selection
Bromine, Total Alkalinity, pH, Free Chlorine, Cyanuric Acid, Total Chlorine, Salt, Copper, Total Hardness

Quantity OEM/Packaging
You can choose 50pcs, 200pcs, 750pcs, or bulk orders and paper pouches, cylindrical tubes, square boxes, or branded packaging)
Clean & Safe Pool Water
Why Choose AQUAPROBE?
Perfect for pool maintenance companies, hotels, resorts, and homeowners who demand precision, convenience, and customization in water testing.
- High Accuracy & Reliability
- Fast & Easy-to-Use
- Custom Branding Available
- Bulk Order Discounts
Why AQUAPROBE is Trusted by 5000+ Partners Worldwide
AQUAPROBE delivers high-precision, reliable, and customizable water testing solutions for pools, spas, and hot tubs. Here’s why industry leaders choose us:
In-House R&D & Manufacturing
We design and produce our test strips in-house, ensuring strict quality control from raw materials to final packaging. Our advanced formulation guarantees fast, accurate results every time.
Premium Chemical Strips
Unlike competitors who use cheaper reagents, we source high-grade chemicals for superior sensitivity and consistency. This minimizes false readings and ensures longer shelf life.
Eco-Conscious Production
We design and produce our test strips in-house, ensuring strict quality control from raw materials to final packaging. Our advanced formulation guarantees fast, accurate results every time.
ODM/OEM
Tailored Test Parameters (Bromine, Chlorine, pH, Hardness, etc.);Flexible Quantities;Custom Packaging (Pouches, tubes, boxes, or branded solutions)