Hanna Instruments

HI781 Marine Low Range Nitrate Checker HC Handheld Colorimeter - Hanna Instruments

HN78100

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HI781 Marine Nitrate Checker HC Handheld Colorimeter - Hanna Instruments


The HI781 Nitrate Checker HC by Hanna Instruments is a simple and accurate handheld colorimeter that uses the Beer-Lambert principle to determine nitrate concentration. The HI781`s low range of 0.00 - 5.00 makes it ideal for measuring the low nitrate levels found in saltwater aquariums.

Why are Nitrate levels important?
Excess nitrates in a reef system can lead to an overgrowth of undesirable algae and dinoflagellates. Alternatively, not enough nitrates can lead to starvation for SPS and other corals.

Features:
  • Designed to accurately determine nitrate levels in aquariums and marine biology applications
  • Low range is ideal for saltwater aquariums 
  • Easier to use and more accurate than chemical test kits
  • Dedicated to a single parameter
  • Simple one-button operation
  • Large LCD digital read out for added convenience
  • Auto shut-off to assure the battery wont be drained
  • Compact size for easy travel and storage

Specifications

Range 0.00 to 5.00 pm (m/L) NO3
Resolution 0.01 pH
Accuracy @ 25°C/77°F ±0.25 ppm ±2% of reading
Light Source LED @525 nm
Light Detector Silicon photocell
Method Colorimetric method. The reaction between nitrate and the reagent causes a pink/violet tint in the sample.
Interferences Nitrite, copper
Auto-off After ten minutes of non-use
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type (1x) 1.5V AAA Alkaline
Dimensions 2.4" x 2.4" x 1.5" (86mm x 61mm x 37.5mm)
Weight 2.3 oz (64g)
What`s Included:
  • (1x) HI781 Checker HC
  • (1x) Nitrate Reagent starter set (reagents for 25 tests)
  • (2x) Sample cuvettes with caps
  • (1x) Filter holder
  • (25x) Filter paper
  • (1x) 10 mL syringe*
  • (1x) 5 mL syringe with tip
  • (1x) 1 mL graduated syringe
  • (1x) Mixing vial with cap
  • (1x) Plastic refilling pipette
  • (1x) 16 gauge blunt needle
  • (1x) 1.5V AAA alkaline battery
  • (1x) Instruction manual
*Some HI781 Checkers were sent out containing a 12mL syringe instead of the 10mL. This will not affect the procedure or results. Please follow the directions outlined in the product manual and videos.

Additional Accessories (sold separately):
  • Replacement reagent set for 25 tests
  • Calibration set

Product Manuals & Documentation

HI781 Marine Low Range Nitrate Checker HC Handheld Colorimeter - Hanna Instruments

Owner's Manual available for download in Adobe PDF file format

Manufacturer Info

Hanna Instruments USA Aquarium Supplies
Hanna Instruments is a leading manufacturer of analytical aquarium instrumentation. They were founded in 1978 and are headquartered in Woonsocket, Rhode Island. When Hanna introduced pH Electronic Paper in 1986 it literally revolutionized the world of testing by allowing millions of people in various industries to test for pH in a simple, accurate and affordable way. Hanna employees are constantly challenging themselves to improve on existing technology and to invent new testing techniques with the common goal to simplify analytical testing. This applies not only to instrumentation, but also to sensors development, reagents and chemicals. Hanna also believes in controlling the quality of their products from inception to delivery so they manufacture everything themselves, from meters and electrodes to chemical reagents and buffer solutions.

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9 Questions
Displaying questions 1-9
 
Q
Reagents, when will the be available?
Asked : Oct 05, 2020
By : Jay, Albuquerque
 
 
 
A
We will be stocking the reagents shortly.
Answered : Oct 06, 2020
By : MD TECH
 
Q
How many tests come with the Hanna Nitrate Low Range Colorimeter HI781? Are the "sold separately" 25 test refill kits available?
Asked : Oct 03, 2020
By : Ron, Florida
 
 
 
 
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Not straight as other hanna tests

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PROS
no color guessing
CONS
not simple as other hanna tests
REVIEW
I love hanna’s alkalinity and phosphate tests. Hanna nitrate uses two sachets and a paper filter. Not sure what I disliked more, the test or the cleaning. Overly complicated compared to red sea nitrate pro, you need to be absolutely color blind to justify all the hassle. Not sure if want to use th...Read More
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