In sea water aquariums the optimum pH value is between 8.2 and 8.5 . Many organisms will react with high sensitivity to large variations of the pH-value An overly large drop or rise should be avoided whenever possible. Therefore a regular check of the pH-level is elementary necessary to note and to avoid any negative development. The pH-reagent from ELOS especially developed for marine aquarium allows the determination of the pH-value with the help of a finely tuned colour scale which shows a range of 7.6 – 9,0 pH-units. • Precise, thanks to the calibrated droplet • Simple to use • Equipped with precision colour chart, measuring vial and syringe • Practical thanks to the easy-opening pack