Hanna Instruments Phosphate LR Checker HC Ascorbic Acid Method Reagents

The HI-7134-25 are high quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their Pool Line CheckerHC. These reagents follow the adaptation of Standard for the examination of water and wastewater, 20th edition, Ascorbic Acid method. The reaction between phosphate and the reagent causes a blue tint in the sample.
By simply adding the packet of HI-7134-25 reagent to the sample, the reaction will take place and the Checker will determine the concentration from the colour that is produced. The results will be displayed in ppm. These reagents are designed to be used with samples that have an expected range of 0.00 to 2.50 ppm.
It is important that the sample does not contain any debris.
When the cuvette is placed into the measurement cell, it must be dry outside and completely free of fingerprints, oil or dirt. Wipe it thoroughly with HI-731318 or a lint-free cloth prior to insertion.
Shaking the cuvette can generate bubbles, causing higher readings. To obtain accurate measurements, remove such bubbles by swirling or by gently tapping the cuvette.
Do not let the reacted sample stand for too long after reagent is added, or accuracy will be lost.
After the reading, it is important to discard the sample immediately, otherwise the glass might become permanently stained.