Hach, 2229726, EGTA Solution, 50 mL SCDB
Catalog Number: 2229726
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Pack Size50 mL
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Answer:EGTA selectively chelates calcium during the prescribed colorimetric sequence, helping differentiate calcium and magnesium responses.
Answer:No. The method also uses a calcium/magnesium indicator, alkaline solution, EDTA and the prescribed measurement procedure.
Answer:The EGTA Solution is supplied in a 50 mL self-contained dropping bottle (SCDB).
Hach EGTA Solution is a chelating reagent used in the calcium and magnesium colorimetric hardness method. EGTA binds calcium preferentially under the prescribed alkaline assay conditions, enabling the calcium contribution to be distinguished from magnesium in a calmagite-based measurement sequence. The solution is packaged in a 50 mL self-contained dropping bottle (SCDB) for reproducible dropwise addition during the standardized Hach procedure. EGTA functions alongside the calcium/magnesium indicator, alkaline solution and EDTA reagent; it is not a standalone calcium or magnesium detection test. Water-quality laboratories use the reagent as part of complete hardness characterization, following the specified reagent sequence, sample volumes and instrument settings.
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