Seachem MultiTest Marine pH & Alkalinity

• Unique dye that has a pronounced color change between 8.0 and 8.3
• Multi-cavity plate for simultaneous testing of up to 6 tests at the same time
• Marine or freshwater
• Includes reference for test validation

Product Description Marine pH should be 8.2-8.4. Tanks dosed with limewater may go as high as 8.6. Natural sea water has a total alkalinity of 2-3 meq/L, but aquarium water should have a total alkalinity of 4-6 meq/L. This test kit features a unique dye that has a pronounced color change between 8.0 and 8.3, making it the easiest kit on the market to read in that critical range. It is suitable for marine or brackish water only. Alkalinity may be read from the same sample in 0.5 meq/L increments. MultiTest Marine pH & Alkalinity performs over 75 tests and contains a reference sample for validation. This kit measures total alkalinity. Total alkalinity is a measure of the carbonate, bicarbonate, borate and hydroxide content of the water, expressed as the acid neutralizing capacity of the water in meq/L (milliequivalents/Liter). The expression of alkalinity as meq/L is chemically sound and the most useful way to express this property of the water to resist change in pH. Directions 1) Fill sample pipette to base of bulb and dispense to a test cavity of the test plate 2) For pH testing: Add one drop of Marine pH Reagent and stir briefly. Read pH from chart. 3) For Alkalinity testing: Hold the alkalinity pipette vertically and add 1 drop of Alkalinity Reagent. Stir briefly. Continue adding drops and stirring until colour turns from blue to yellow. Just before going to yellow, a lime green colour will appear. The final drop is usually one drop beyond this point. Each drop is equal to 0.5meq/l. The number of drops to get to yellow divided by 2 is the total alkalinity. Box Contains A set of 75 test kits