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Hanna Calcium Checker (Marine) - Hanna Instruments

$49.95 


Item #: HN1187

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The Hanna Marine HI758U Calcium Checker® bridges the gap between simple chemical test kits and professional instrumentation, giving you accurate results for your saltwater aquarium in the palm of your hand.

Many test kits on the market today rely the human eye to judge and determine color changes, which are notoriously difficult to use, especially in the lower ranges. Many professional instruments offer great accuracy using technology, but are not affordable to the average aquarist. The Hanna Marine Calcium Checker® HI758U bridges the gap between simple chemical test kits and professional instrumentation, using a fixed wavelength LED and silicon photo detector to provide the accuracy of professional instrumentation at the affordable price of a chemical test kit.

The Benefit of Testing for Calcium

Calcium is an essential ingredient to a healthy and functional reef aquarium. Corals and coraline algae require calcium for calcification and growth, so much so that an aquarium stocked with these organisms require regular calcium supplements in order to maintain healthy levels.

A variety of commercially available supplements exist, from calcium salts to buffered calcium supplements, which raise both calcium and alkalinity. Many aquarists set up a regular supplementation schedule to maintain proper calcium levels. However, regular calcium monitoring is crucial to a healthy reef aquarium, even if such a system is in place. This is because as corals and coraline algae grow and mature, their requirements for calcium tend to increase. As a result, the growth of the aquarium might outpace the calcium supplementation regimen.

The ideal range for calcium in a healthy reef aquarium is between 380-450ppm. Values below 380ppm may slow the growth of corals, whereas high levels of calcium (>500ppm) puts the tank at risk for calcium carbonate precipitation (limestone formation).


Features:

  • The Checker HI758U easily fits into the palm of your hand or pocket
  • Ideal for Aquaculture and Aquarium testing
  • Easier to use and more accurate than chemical test kits
  • Large, easy to read digits
  • Auto shut off
  • Single battery operation
  • Use for quick and accurate on the spot analysis
  • Single button operation: zero and measure


Specifications:

Range200 to 600 ppm
Resolution1 ppm
Accuracy @ 25°C/77°F±6% of reading
Light SourceLED @ 610 nm
Light Detectorsilicon photocell
Methodadaptation of the Zincon method
Environment0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type  (1) 1.5V AAA
Auto-offafter ten minutes of non-use
Dimensions81.5mm x 61mm x 37.5mm (3.2" x 2.4" x 1.5”)
Weight64 g (2.25 oz.)
Ordering Information

HI758 Calcium Checker is supplied with:

  • (2) sample cuvettes with caps
  • Calcium reagent starter kit for 25 tests*
  • Dropper
  • 1 ml syringe with tip
  • 100 microliter pipette with tip
  • Plastic pipette
  • Battery
  • Instructions and quick start guide.
Warranty1 year limited warranty

*Uses Hanna Instruments Calcium Reagent HI758U-26


How it works:

  • Press the button to power the meter on. Notice “Add C1” appears on the screen - you are now ready to begin testing.
  • Using the 1mL syringe, add 1mL of reagent A to the cuvette. Then, using the dropper, fill the cuvette to the 10mL mark with deionized water. Distilled water is also acceptable. Once the reagent and water are added, invert the cuvette five times to mix.
  • Using a microfiber cloth, wipe the cuvette to remove any oils or fingerprints from the glass. Then, place the cuvette into the checker and close the lid, making sure it is completely closed. It is important to make sure that the lid is completely closed for an accurate reading.
  • Press the button. Once the screen shows "Add C2", remove the cuvette from the meter.
  • Add 0.1mL of sample. For best accuracy, use the supplied 0.1mL pipette. Note: To use the Hanna Instruments Micropipette, first attach the pipette tip. Push the button to the first "stop", and then immerse the tip into the sample. Slowly release the button to its original position. Then, wait two seconds to catch any drops before dispensing the sample into the cuvette to the second "stop".
  • Once the sample is added, add one packet of reagent B to the sample. After that, cap the cuvette and shake vigorously for 15 seconds. Wait 15 seconds for bubbles to dissipate.
  • Wipe the cuvette of any oils and fingerprints, and place back into the meter. Press the button; The meter will directly display the concentration of calcium in ppm.


Calcium Checker Troubleshooting Tips

  1. Never rinse your cuvettes with tap water or saltwater
  2. Use pure vapor distilled water from your local pharmacy at C1 phase. RODI water from home filtration units may not be suitable for this test as calcium can easily permeate through your filter membranes.
  3. Clean your cuvettes with distilled or deionized water absent of Calcium that is going to be used for C1 phase dilution. 
  4. Measure out 9 ml of distilled or deionized water for C1 phase
  5. Make sure no excess aquarium sample saltwater is on the tip of the pipette. Only administer the saltwater that is sucked into the pipette tip. 

Manufacturer information

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.

5 Stars


derik

Reviewed on
November 25, 2020

Yes, I would recommend this.

Fast, easy and accurate

Pros: Fast, accurate and easy to use

Cons: Reagents are expensive

Now that it includes the sample pipette this checker is very reliable. No more trying to guess the titration color.

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dv205

Reviewed on
November 11, 2020

Yes, I would recommend this.

Great

Pros: Works great

Cons: None so far

I really love this meter and it is very cool and very easy to use and very accurate
I would recommend this meter to anyone who is a serious hobbyist
Remember to use RO/DI water

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ryan

Reviewed on
September 01, 2020

Yes, I would recommend this.

Awesome

Pros: Fast results easy to use

Cons: None

Super easy to use and fast

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alrof33

Reviewed on
August 01, 2020

Yes, I would recommend this.

Easiest way to check for calcium levels

Pros: Easy and fast way to measure calcium

Cons: Price is more expensive than others

This is by far the easiest and fastest way to check on calcium in your aquarium love all Hanna products by far the best and most reliable test you can get

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srwmemphis

Reviewed on
July 03, 2020

Yes, I would recommend this.

I hate testing water

Pros: No more guessing. Easy to use

Cons: None

I really do hate testing water because of all of the guess work of trying to match colors, This tester removes all the guessing. Love it

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hannasucks

Reviewed on
June 07, 2020

No, I would not recommend this.

Didn't work right out of the box!

unit is giving low lightt indicator error. hanna can't explain. On it way back to MD. Never again Hanna!

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sam

Reviewed on
April 27, 2020

Yes, I would recommend this.

buy it

so much nicer than adding one drop, recapping, shaking over and over until the solution changes color. i will buy every hanna checker that test for a substance that i need to test for.

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joe

Reviewed on
March 18, 2020

Yes, I would recommend this.

Great tester

Pros: Easy to use

Cons: Cost

Little pricey but I think worth it takes the guesswork out

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mike

Reviewed on
January 05, 2020

Yes, I would recommend this.

Makes testing easy

Pros: Ease of use

Cons: Manuel hard to use, YouTube was a snap

Switched from API and found this to be more accurate and easy to use for a novice reefer.

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johnny

Reviewed on
November 22, 2019

Yes, I would recommend this.

Hanna Cal. Tester

Pros: Measures, great. Love it.

Easy to use, great product.

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