- More accurate than chemical test kits, less expensive than professional testing
- Accuracy of + or - 5% using an adaptation of Standard Method Ascorbic Acid
- Single button operation for ease of use
- Large LCD screen for readability
- Auto shut-off to prolong battery life
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Hanna Instruments HI736 Phosphorus Ultra Low Range Checker HC for Saltwater Aquariums
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Specifications for this item
|Brand Name||Hanna Instruments|
|Item Weight||0.64 ounces|
|Number of Items||1|
The Hanna Instruments HI 736 Checker HC Handheld Colorimeter for Phosphorus is portable meter ... See more product details
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The Hanna Instruments HI 736 Checker HC Handheld Colorimeter for Phosphorus is portable meter for measuring phosphate levels.
The HI 736 bridges the gap between less accurate chemical test kits, and expensive professional test instrumentation. The HI 736 operates using a silicon photocell light detector, and has an accuracy of + or - 5% using an adaptation of Standard Method Ascorbic Acid. To use, simply zero the instrument with your water sample, then add the reagent. Place the vial into the checker, press the button, and read the results within seconds.
The HI 736 operates in temperatures from 0 to 50 degrees C (32 to 122 degrees F)/RH max 95% with a range of 0 to 200 ppb with precision + or - 5% ppb at 25 degrees C. The device operates on one 1.5V AAA battery, with an auto-off function that shuts off the device after three minutes of non-use. Dimensions are 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”) and weighs 64 g (2.25 oz.).
Orthophosphates are present in water from the natural weathering of mineral deposits, agricultural runoff, untreated sewage, animal waste, fertilizers and as a corrosion inhibitor in drinking water. Phosphate photometers are used by researchers, manufacturers, and individuals to monitor phosphate levels in the environment, and in the home.
Hanna Instruments manufactures a wide variety of analytical instrumentation, including pH meters, multi-parameter meters, electrodes, chemical reagents and buffer solutions. Founded in 1978, Hanna is headquartered in Woonsocket, RI, with subsidiaries in 32 countries. Hanna Instruments holds many firsts in the field of analytical instrumentation, including the world’s first pH electrode with a built-in temperature sensor, electronic pocket-sized pH tester, and replaceable electrode pH pocket tester. To ensure the quality of its products, Hanna is a vertically integrated manufacturer and does not subcontract any part of its manufacturing.
What’s in the Box?
- Sample cuvettes with caps (2)
- Powder reagents for phosphorus (6)
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Top Customer Reviews
Looking forward to adding the Hanna Instruments saltwater calcium and alkalinity checkers to my collection.
The one thing that I find a bit annoying,is that you have to work quickly with the reagent and sample at C2 stage or the meter times itself out. So, just being prepared by cutting the dry reagent and creating a pocket for that, will solve this for you.
It works quickly and accurately over and over.
have said and there has to be a better way to deliver the reagent, what a pain
those little packets are. You never know for sure if you get all the powder
in the bottle and if you left a few grains sticking in the packet how did this
effect the test results.
One of the bottles in my kit has some scratches on the bottle, not sure if they
are in a place to effect the read or not.
It still beats a test kit by far.
First you have to put a vial filled with tank water in the tester and press the button to calibrate. After that you have about 3 mins to dump all the reagent out of its tiny package through the tiny neck of the vial. If you spill some you have to open a new packet, 1 way to waste a packet. Then, if it takes too long to get the stuff out of the packet and get it all dissolved, which takes more than half of the 3 minutes you get, the tester automatically shuts off and since your water sample has reagent in it and the test has to be re calibrated, 2 ways to waste a packet. Then after that you must press AND HOLD the button. If you do not hold, it gives you an instant reading which will not be accurate, 3 ways to waste a packet of reagent. i believe this is meant to skip the timer in case you've messed up you don't have to wait through it (waste the packets faster). In any case, assuming you've done your job well and completed these somewhat tricky steps perfectly, you have a 3 minute timer to wait through before the device displays the correct reading for one minute. If you are distracted during that time and miss that reading for whatever reason, that makes 4 opportunities to waste packets.
This is all unnecessary to me. Why does it have to have packets? Why not just a jar of reagent dust and a spoon? like every other test kit i've ever used that had dry reagent. I feel the packets are wasteful. Why does it have to turn off automatically?Read more ›
Most Recent Customer Reviews
my tester looked like it was used and sitting on shelf for a while then sold to me . It works but disappointed I paid full price for a used item.Published 21 days ago by christian
I'm already using some of their other checking devices for my salt water reef tank and they are all excellent units highly recommend themPublished 2 months ago by Good frame
I can test the same water everv30 mins an I'll get 14 to69 reading its not worth it just buy a kit or not even just do water changesPublished 3 months ago by eric
Great product, but don't know if it is consistently accurate. I have had readings of 200 ppb and then take it again and it will be 7 ppb. When it works it is great!Published 5 months ago by Jeffrey Baker