Jo den ska funka med sötvatten:
Hanna Phosphate Checker
These observations apply to the Hanna Checker HI-713 (Low Range Phosphate):
Likes:
Results compare very favorably with those generated by a much more expensive device
Much less expensive than a full-blown spectrometer or photometer
Easy to use and portable
Results are generated in several minutes (including a 3-minute reaction time)
The Checker incorporates a timer
The procedure is simple - Add reagent, shake and bake for several minutes, and read results in parts per million as phosphate
Replacement reagent is competitively priced
Auto-shutoff
Reagents work in fresh, brackish, and saltwater
Reagents marked with expiration date
Low Battery, Dead Battery, Under Range, Over Range, Inverted Cuvettes, High Light and Low Light errors are displayed when appropriate
Small sample size (10 milliliters)
Spare cuvette included
Directions (but not MSDS) available online
Källa: http://www.advancedaquarist.com/2011/8/review