PRODAC GH Aquarium Test

Features: - Rinse The Cylinder Several Times With The Water To Be Examined Before Filling It Up To The 5 Ml Notch. - Add One Drop At A Time, Of The Reagent From The Vial, Count The Drops And Shake After Each Drop Until The Color Of The Reaction Turns Green. - Once The Green Color Is Obtained, Let It Rest For 30 Seconds. If The Color Disappears, Add More Drops Of The Reagent Again Until The Coloration Remains Stable. - The Total Hardness Expressed In German Degrees (°Dgh) Corresponds To The Number Of Drops Of Reagent Necessary To Obtain The Green Color. 1 Drop = 1°Dgh. Attention: Clean The Vial After Use, Close The Reagent Containers Tightly And Store Them In A Cool, Dry Place Protected From Light.