Hardness Test Kit, Visual Colorimetric Analysis, 100-1000 ppm, EDTA Method, Chemetrics, Inc., K-4585

CHEMetrics® Hardness (Total)—Tirets Titration Cells, 30 Ampoules/EA, 100 to 1000 ppm as CaCO₃, K-4585

Features:

• Method:  EDTA (total)—References: APHA Standard Methods, 20th ed., pp. 2-37, Method 2340 C (1998). USEPA Methods for Chemical Analysis of Water and Wastes, Method 130.2 (1983)
• Minimum detection limit:  100 ppm
• Dependable, sealed single-use titrants
• Fast, easy procedure—no need to count drops
• No burettes or other equipment required
• Titration can be performed ANYWHERE
• Applicable to drinking, surface, boiler, and brine waters
• EDTA titrant employed in alkaline solution with calmagite indicator
• Method determines combined calcium and magnesium concentration of sample—when magnesium is not present end point of titration normally appears sluggish but the reagent in the tirets is specially formulated to ensure sharp end points regardless of presence of magnesium
• Results expressed as ppm (mg/L) CaCO₃
• Increments of 100, 110, 120, 130, 140, 150, 160, 180, 200, 250, 300, 350, 400, 500, 700, 1000 ppm
• Appearance:
  • Ampoules: clear liquid
  • Valve Assemblies:  red liquid
• CAS Nos.:
  • Ampoules:
    • EDTA Disodium Salt:  139-33-3
    • EDTA magnesium Disodium Salt:  14402-88-1
    • 2-Amino-2-Ethyl-1,3-Propanediol:  115-70-8
    • Water:  7732-18-5
  • Valve Assemblies:
    • Calmagite:  3147-14-6
    • Diethylene Glycol:  111-46-6

Kit Includes:

• 30 ampoules with valve assemblies
• Titrettor
• 25 mL sample cup
• Instructions
• SDS
• Cardboard box