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Old 05-22-2011, 10:10 AM   #1 
Sakura8
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Best Light For Test Results

It can be so hard to accurately read test results on strips or those liquid drops. What does everyone suggest: fluorescent, natural daylight, or incandescent light for reading test results?
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Old 05-24-2011, 08:30 AM   #2 
Harley
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I have the "API Freshwater Master Test Kit" and just use regular light bulbs. It does recommend to use a white background when trying to match the test to the color charts which does make it easier to determine what the results are.
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Old 05-24-2011, 11:06 AM   #3 
Sakura8
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I use API's Nitrite and Ammonia liquid tests and I have a heck of a time trying to match the colors. I've tried fluorescent lights, regular light. Yeesh. So most of the time, either my ammonia and nitrite levels are 0 or 0.25. I can never tell the difference between the two colors so I usually end up doing a water change to be on the safe side. Maybe I'm going color-blind.
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Old 05-24-2011, 11:22 AM   #4 
Oldfishlady
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I use natural light...I usually stand near an open window to compare colors....
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Old 05-25-2011, 01:16 AM   #5 
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Quote:
Originally Posted by Oldfishlady View Post
I use natural light...I usually stand near an open window to compare colors....

+1 to natural...... as incandescent and fluorescent lighting may cast a faint colour tone onto your test tubes & colour chart, making it even more difficult to determine the actual colour. For example, bulb filaments with sodium may cast an orangeish sort of colour (try sprinkling salt over flames... this is the sodium), or magnesium would cast a blueish colour.
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Old 05-25-2011, 03:01 AM   #6 
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Looks like I'll be using natural light from now on. Which means I've got to remember to do the tests in the daytime. No more testing the water at 1:30AM. :)Okay, that only happened once.
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