- Sku: HI736
- Vendor: Hanna
Hanna Instruments 736 – Phosphorus Ultra Low Range Colorimeter – Checker® HC
Hanna Instruments HI736 – Phosphorus Ultra Low Range Colorimeter – Checker® HC 🔬🌊
Keep phosphate in check with precision and confidence using the Hanna Instruments HI736 Phosphorus Ultra Low Range Colorimeter. Designed specifically for reef aquariums with minimal nutrient levels, this pocket-sized Checker® HC delivers laboratory-grade results for phosphorus down to 0.00 ppm. Ideal for SPS-dominated or ULNS systems where small changes matter. 🌿🐠
🎯 Ultra-Sensitive Nutrient Detection
The HI736 measures phosphorus in the ultra-low range (0 to 200 ppb), which corresponds to phosphate levels as low as 0.00 to 0.61 ppm PO₄³⁻. This makes it the perfect tool for advanced reef keepers aiming for pristine water conditions.
📲 Easy, One-Button Testing
Simple operation meets high precision. Just zero the meter with your blank, add reagent, and insert your sample. Hit one button to get a clear digital reading—no ambiguous color charts, no guesswork.
🧪 Perfect for Reef Aquariums
Designed for saltwater environments, the HI736 helps you monitor nutrient levels critical to coral health and coloration. Whether you're dosing, filtering, or just keeping tabs, this Checker® HC keeps you in control of your tank’s chemistry.
🔗 Compatible Reagents Available
Pair this tester with HI736-25 reagent refills for 25 ultra-accurate tests per box—sold separately at Squeaky’s Aquatics.
🔑 Key Features
- Designed for marine/saltwater aquariums
- Measures phosphorus from 0 to 200 ppb
- Approximate phosphate range: 0.00 to 0.61 ppm PO₄³⁻
- ±5 ppb accuracy with 1 ppb resolution
- EPA-based Ascorbic Acid method (365.1)
- Digital readout for easy interpretation
- Auto shut-off after 10 minutes of inactivity
📦 What’s Included
- HI736 Checker® HC Colorimeter
- Sample cuvettes & caps (2)
- Starter reagent packets (6 tests – HI736-25)
- AAA battery
- Instruction manual
When accuracy matters most, trust the Hanna Checker® HC HI736 to help you maintain ultra-low nutrient levels for optimal reef health. 🌟🐚
More Information
| Item | Hanna Instruments Phosphorus ULR Checker HI736 |
| Model Number | HI736 |
| Measurement Range | 0 to 200 ppb phosphorus (as PO₄³⁻: approx. 0.00–0.61 ppm) |
| Resolution | 1 ppb |
| Accuracy | ±5 ppb ±5% of reading |
| Testing Method | Ascorbic Acid Colorimetric Method (EPA 365.1) |
| Battery Type | 1.5V AAA |
| Auto Shut-Off | After 10 minutes of non-use |
| Application | Saltwater/Reef Aquariums |
| Reagent Required | HI736-25 (25 Tests per Pack) |
| Features | ULR detection, digital readout, compact size |
| Availability | In Stock/Restockable |
Have a question?
Hanna Instruments 736 – Phosphorus Ultra Low Range Colorimeter – Checker® HC