Product Description
Professional High Range Nitrate Testing for Saltwater Aquariums & Reef TanksThe Hanna Instruments HI782 Marine Nitrate High Range Checker HC delivers lab-grade accuracy for monitoring nitrate levels in saltwater aquariums, reef tanks, and marine aquaculture. This portable colorimeter measures nitrate from 0 to 75 ppm NO₃⁻-N with digital precision, eliminating the guesswork and color-matching errors common with traditional test strips and liquid kits.Key Features & Benefits
High Range Precision: Measures 0 to 75 ppm NO₃⁻-N with ±1 ppm accuracy—ideal for marine systems with elevated nitrate levels
Marine-Specific Formulation: Designed specifically for saltwater testing, accounting for the unique chemistry of marine environments
Digital Accuracy: Eliminates subjective color-matching errors with clear digital readout
Simple One-Button Operation: Get reliable results in minutes with intuitive push-button testing
Portable Design: Compact, battery-powered unit for on-site testing anywhere
Cost-Effective: Reusable colorimeter reduces long-term testing costs compared to disposable strips
Professional Grade: Trusted by reef aquarists, marine biologists, and aquaculture professionals worldwide
Made in Romania: European quality manufacturing by Hanna Instruments
Why Marine Nitrate Testing is CriticalNitrate (NO₃⁻) is the final product of the nitrogen cycle in marine aquariums. While less toxic than ammonia or nitrite, elevated nitrate levels cause significant problems in reef tanks and saltwater systems:
Coral Health: High nitrate inhibits coral growth, reduces coloration, and suppresses calcification in SPS and LPS corals
Algae Blooms: Excess nitrate fuels nuisance algae growth including hair algae, bubble algae, and cyanobacteria
Fish Stress: Chronic nitrate exposure weakens immune systems and increases disease susceptibility
Water Clarity: Elevated nitrate contributes to cloudy water and poor water quality
Invertebrate Sensitivity: Shrimp, anemones, and other invertebrates are sensitive to nitrate accumulation
ApplicationsReef Aquariums: Monitor nitrate levels to maintain optimal conditions for SPS, LPS, and soft corals. Most reef tanks target nitrate levels between 1-10 ppm, though some systems run ultra-low nutrient (ULNS) or higher nutrient levels depending on coral types.Fish-Only Marine Tanks (FOWLR): Track nitrate buildup from fish waste and feeding to prevent stress and maintain water quality. Marine fish tolerate higher nitrate than corals, but regular monitoring prevents excessive accumulation.Marine Aquaculture: Ensure optimal water quality in commercial fish farming, hatcheries, and breeding operations for species like clownfish, tangs, and marine ornamentals.Public Aquariums: Professional-grade testing for large marine displays and life support systems.Technical Specifications
Range: 0.0 to 75.0 ppm (mg/L) NO₃⁻-N
Resolution: 1 ppm
Accuracy: ±1 ppm ±10% of reading
Light Source: LED @ 525 nm
Method: Cadmium reduction method adaptation
Sample Type: Saltwater/Marine
Battery Type: 1 x AAA (included)
Auto-shutoff: After 3 minutes of non-use
Dimensions: 81.5 x 61 x 37.5 mm
Weight: 10 oz
Country of Origin: Romania
How to Use
Fill sample cuvette with 10 mL of aquarium water
Add HI782 reagent A packet and shake to dissolve
Wait 3 minutes for reaction
Add HI782 reagent B packet and shake vigorously for 1 minute
Wait 2 minutes for color development
Zero the Checker with the blank sample
Insert prepared sample and read nitrate concentration on digital display
What's IncludedHI782 Checker HC, 2 sample cuvettes with caps, HI782-25 reagent starter pack (6 tests), AAA battery, instruction manual, and quick start guide.Important Note: This is the HIGH RANGE marine nitrate checker (0-75 ppm). For low range testing (0.00-5.00 ppm), use the HI764 Marine Nitrate Ultra Low Range Checker.Made in Romania by Hanna Instruments, the world leader in analytical instrumentation with over 40 years of innovation in water testing technology.Maintain pristine reef conditions and vibrant coral growth with accurate nitrate monitoring. The HI782 Checker HC is an essential tool for every serious reef aquarist.
