Buffer Powder Pillows, Color-coded Yellow, pH 7.00 +/- 0.02,  at 25 degrees C, 250/PK, 2227064

HACH® Buffer Powder Pillows, Color-coded Yellow, pH 7.00 +/- 0.02,  at 25 degrees C, 250/PK, 2227064

Features:

• pH Buffer standard solutions for laboratory and field analyses
• pH Buffer Powder Pillows for pH electrode calibration
• Each powder pillow prepares 50 mL of fresh buffer solution
• Color-coded for easy identification (Yellow)
• pH is 7.00 ±0.02 at 25°C
• Appearance: light yellow powder
• CAS Nos.: 
  
  • Phosphoric Acid, Disodium Salt:  7558-79-4
  • 2,4-Dinitrophenol:  51-28-5
• pH: 7.0 (15.8% solution)
• Melting/Freezing Point: ~ 160 °C / 320 °F
• Specific Gravity/Density: 2.40 g/mL
• Partition Coefficient:  log Kow ~ 0
• Soil Organic Carbon/Water Partition Coefficient:  log Kow ~ 0
• Solubility: >1000 mg/L water at 25 °C / 77 °F