4.4 x 1.92 x 1.81 inches

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CHECK YOUR WATER SOFTENER! Quickly and easily test to see if your water softener is working as efficiently as expected or if it was set up properly. Also keep tabs on your water conditioning and reverse osmosis systems
EXTREMELY FAST & EASY TO USE, WITH EASY TO READ COLORS. Instant reliable results with simple and clear instructions. Simply dip and compare with large color chart on bottle.