The HI774 Checker ® HC (Handheld Colorimeter) provides a simple, accurate and cost effective way to measure phosphate from 0.00 to 0.90 ppm. Particularly if you have 0.03 parts per million phosphates in the water and the meter is reading zero. The Hanna HI736 Ultra Low Range Phosphorus Checker is more accurate at low ranges than the HI713 Low Range Phosphate meter. (5 ppb phosphorus X 3.066) / 1000 = 0.015 ppm phosphate. The HI713 Checker HC portable handheld colorimeter features a resolution of 0.01 ppm (250 points) and ±0.04 ppm (mg/L) ±4% of reading accuracy. These reagents are designed to be used with samples that have an expected range of 0… very easy to use thanks to its large LCD … Adaptation of Standard Method 4500-P E Accuracy 4% ±0.04 ppm (mg/L) of reading 0… Last, place the vial into the Now with the ultra-low phosphorus checker a 0.03 ppm phosphate reading would show up as close to 10 ppb phosphorus once we apply the accuracy expectations of the ∓ 5 ppb (+5%) of the reading we end up with an accuracy range of 0.016 ppm to 0.047 ppm this is less than half the range of the phosphate checker. The net result is the effective range of detecting phosphate is a much smaller window of resolution, 0 ppm to 0.6 ppm phosphate versus the 0 pm to 2.5 ppm of the HI713 Phosphate Checker. Hanna HI713 Free Phosphate Checker. This Low range checker measures phosphate 0-2.5 ppm. Chemical test kits have limited accuracy and … I often get 0.00 readings on my test kits (including the hanna … Each set it checked at Hanna… Hanna Instruments Low Range Phosphate Checker Reagents - 25 Tests The HI713-25 are the replacement reagents for the HI713 Phosphate Low Range Checker® HC. The New Hanna HI774 Phosphate ULR Marine Checker is the ideal tool for reef tanks. Dedicated to a single parameter Designed to work with HANNA… In many cases because the quality of the components reagents and testing methods are different between the different price points. One element to also considers most testing methods are not only less accurate at extreme ends of their testing range. 1.) Gives consistent results. The Hanna Phosphate Ultra Low Range (0.00 to 0.90 ppm) Checker ® bridges the gap between simple chemical test kits and professional instrumentation. It's just not sensitive enough. The HI774 Checker ® HC (Handheld Colorimeter) provides a simple, accurate and cost effective way to measure phosphate from 0.00 to 0.90 ppm. Note that the Hanna Marine Phosphate Ultra Low Range Checker® HC - HI774 gives readings in ppm. Features at-a-glance: • Directly reads in parts per million (ppm) phosphate (orthophosphate) • Better suited for soft coral, LPS dominant or mixed reefs with phosphate levels above 0… Particularly with test kits because most people find the shades of blue impossible to read confidently, and at the end of the day the human eye is a reasonably poor measurement tool and likely why digital checkers have become so popular. Recently I did a video and purchased Hanna ULR Phosphorus Checker HI736 model to switch from my regular Hanna ppm unit HI713 because. Phosphate or Phosphorus Testing with Hanna Checkers? Your welcome to have mine as I wrote it off as a waste of money. To see the difference between the two Hanna Checkers, the HI713 Low Range Phosphate Checker has an effective range of between 0 to 2.5 ppm which covers 90% of the reef tanks out there. ReefPix wrote: Someone please correct me if im wrong but as far as i know there's no affordable "off the self" test kits that can measure much below 0.1ppm. Details. In most cases keeping your reef tanks readings around 0.02 to 0.03 ppm with the HI713 is perfectly acceptable even with the small margin of error. These Checker HC’s are accurate and affordable. Much better then multiple test kits I used to have before. Phosphorus Checker is designed for reef tank owners keeping SPS corals and aquariums aiming for low phosphate levels less than 0.03ppm. I’m new to reefing testing my phosphate for the first time on my 6 months tank. For the best experience on our site, be sure to turn on Javascript in your browser. All Rights Reserved. Hanna Instruments Phosphate Low Range Checker HC measures just 2.4" x 1.5" x 3.2" high and features a range between 0 to 2.50 ppm with 0.01 ppm resolution (±0.04 ppm ±4% accuracy @ 25°C/77°F of reading). The HI 713 Checker®HC uses an adaptation of … I have Salifert phosphate test kit and I only ever once received a reading of 0.03. Hanna Instruments HI713 Checker Phosphate Low Range. The HI 713 Checker®HC portable handheld colorimeter features a resolution of 0.01 ppm (250 points) and ±0.04 ppm (mg/L) ±4% of reading accuracy. JavaScript seems to be disabled in your browser. >ˆl8j• 2º3¢DÂ8)Š’ZLM¨ÖÎxXPš …LޛÛå÷ófÚð"¶lxqœ73ç±6“›˜ÝÉIʨ! Hanna HI736 Ultra Low Range Phosphorus Checker, The mixing is done the same way every time. Hanna instruments makes so called Marine version of this checker HI774 with ultra low range range 0-0.9 ppm and High range version HI717 0 … The reading at the extreme end of both meters measuring range, in this case, the accuracy range of ∓ 0.04 (+4%) of the reading would mean the phosphate accuracy window would be somewhere in the range between 0 & 0.07 ppm which is likely a larger window than some reefers might prefer. That said we're not synthesizing pharmaceuticals here, just keeping our reef tanks in that safe, consistent range and most of these tests are designed to get us close enough to achieve that goal without breaking the bank. However ultra-low nutrients almost always leads to harder to test for nutrients, and with phosphate that's undoubtedly true. Without any conversions, get your ppm reading fast! 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