Table 1.
Type of Bond | Acidic | Basic | Hydrophobic | Ionic |
---|---|---|---|---|
Weak Strength | pH > 2.5 Formic acid HCl 10 mM Glycine/HCl | pH < 9 10 mM HEPES/NaOH | pH < 9 50% ethylene glycol | 1 M NaCl |
Intermediate Strength | pH 2~2.5 Formic acid HCl 10 mM Glycine/HCl H3PO4 | pH 9~10 NaOH 10 mM Glycine/NaOH | pH 9~10 50% ethylene glycol | 2 M MgCl2 |
Strong Strength | pH < 2 Formic acid HCl 10 mM Glycine/HCl H3PO4 | pH > 10 NaOH | pH > 10 25~50% ethylene glycol | 4 M MgCl2 6M guanidinechloride |