Hampton Research Buffer Formulation
• All buffers are formulated as 1.0 M stock solutions except CAPS and CAPSO which are formulated as 0.5 M stock solutions
• pH is measured at 25.0°C
• Formulated in Type 1+ ultrapure water: 18.2 megaohm-cm resistivity at 25°C, < 5 ppb Total Organic Carbon, bacteria free (<1 Bacteria (CFU/ml)), pyrogen free (<0.03 Endotoxin (EU/ml)), RNase-free (< 0.01 ng/mL) and DNase-free (< 4 pg/µL)
• Buffers are sterile filtered using 0.22 micron filters under sterile conditions
• The pH is adjusted using either Hydrochloric acid (HCl) or Sodium hydroxide (NaOH). See table 1 below.

Crystal Growth 101 Buffer Formulation Table 1
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