Seachem Marine pH & Alkalinity Multi Test Kit, 75 Tests.
**** PRODUCT MANUAL ****
MultiTest: Marine ph & Alkalinity™ 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.
Alkalinity may be read from the same sample in 0.5 meq/L increments.
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Very good test. Review by James
Very accurate test. The regent helps a great deal to make sure the numbers are right on. I'll be replacing the rest of my test kits with Seachem. (Posted on 8/19/2014)