Table 5: pH values of the cSLN after the preparation or upon dilution with phosphate buffer solutions. The specific variable(s) which characterize each batch [volume of the aqueous phase (10 or 50 ml); glass or plastic tube; S25N-10G or S25N-8G probe accessory] are evidenced in bold under the column ‘Conditions’.

Batch Operative conditions Phosphate buffer solution (pH) Dilution ratio (v/v) Final measured pH
S2A (initial pH: 5.90) 10 ml plastic S25N-10G 6.6 1:1 6.14
1:5 6.50
7.4 1:1 7.15
1:5 7.28
S2A (initial pH: 6.38) 10 ml glass S25N-10G 7.4 1:1 7.26
1:5 7.23
S1A (initial pH: 6.04) 50 ml glass S25N-10G 6.6 1:1 6.83
1:5 6.63
7.0 1:1 7.12
1:2 7.17
1:5 7.00
7.4 1:1 7.38
1:2 7.47
1:5 7.31
S2A (initial pH: 6.68) 50 ml glass S25N-10G 7.0 1:1 7.18
1:2 7.19
1:5 6.97
7.4 1:1 7.41
1:2 7.47
1:5 7.25
S1A (initial pH: 6.88) 10 ml glass S25N-8G 7.0 1:2 7.18
7.4 1:2 7.47