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Calcium Hardness #1 1 Oz. 30 mL for ColorQ Pro 7 Version 1.4 or Below Item: 7040-G
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This reagent for use with ColorQ Digital Photometer Testing Kits (Pro 7 Version 1.4 or below).

For ColorQ Pro 7 Kits Version 1.4 or below (older version kits).


DPD #1A 1 Oz. 30 mL Bottle Item: #P-6740-G
 
DPD #1B 1 Oz. 30 mL Bottle Item: #P-6741-G