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Home » Aquarium Supplies  » Water Testing  » Handheld Devices  »  Hanna Instruments Calcium Reagent, 25 Tests
Hanna Instruments Calcium Reagent, 25 Tests

Hanna Instruments Calcium Reagent, 25 Tests

Temporarily Out of Stock: ETA 6-8 weeks
Item #:

Hanna Instruments Calcium Reagent, 25 Tests Information

Reagent kit for 25 Marine Calcium Tests

The reagent has a part A (liquid) and part B (powder).

For use with Hanna Instruments Checker Marine Calcium Colorimeter (HN1187)

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.

Hanna Instruments Calcium Reagent, 25 Tests Reviews

Average Rating
(4 reviews)
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Reviewers Rating Excellent!

Posted: 2/20/2015 from Miami Beach, FL UNITED STATES
5.0 5
Experience Level: Expert

Comments: Can't have a reef tank without Hanna testers. Well , you can but I would not recommend it. This product is always consistent even with cross testing with other products, Hanna checkers are always spot on and half the time.

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Accurate for a chemist

Reviewers Rating Great

Posted: 11/28/2014 from Raleigh, NC UNITED STATES
4.0 5
Experience Level: Intermediate

Comments: So I purchased this test kit and while waiting for my tank to get set up I decided to test my friends water. he took his water to the fish store and they measured it to be 420 ppm calcium. So I took some of his water and measured it with the syringes in the kit. The reading came out to be 527 ppm? Why the difference? So since I am a chemist I went into the lab and made up a standard of 400 ppm Ca 2+ using CaCl2 and an accurate volumetric flask and a microbalance. I also brought home some old pipettes because you need to measure out 1 mL and 0.1 mL. Based on the kit not sure how accurate the 1 mL needs to be but the 0.1 mL needs to be accurate. If you measure 0.125 that is the difference between 400 ppm and 500 ppm. So I used the accurate pipettes and obtained a value of 409 ppm. That's a 2% accuracy and that's assuming everything was measured perfectly and there was no residual Ca in the glass or RO water. Also 2% accuracy is about the accuracy of the pipettes so I am very satisfied with the reading. I gave this 4 stars because I don't think you can do better than 10-15% accuracy with the supplied syringes but maybe with practice it would get lower to maybe 5%. Overall very easy to perform the test and the digital readout is great!

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Calcium Test

Reviewers Rating Average

Posted: 5/2/2013 from Huntington Beach, CA UNITED ST
2.5 5
Experience Level: Expert

Comments: Simple and convenient to use, but I have doubts about the accuracy. I have tried doing the test multiple times within an hour, always with the same protocols and gotten tremendous fluctuations in the results. Hanna is on the right track, but they definitely need to refine the test.

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test calcium

Reviewers Rating Excellent!

Posted: 1/12/2012 from LAKE PARK, GA UNITED STATES
5.0 5
Experience Level: Expert

Comments: theres nothing better on the market to test your tank all hanna testers are great.

2 of 2 People found this review helpful, did you? Yes No

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