Sol-Gel Thin Films Immobilized with Bromocresol Purple pH-Sensitive Indicator in Presence of Surfactants

Table 2

BCP sensor repeatability.

pH	Number of measurements	SD	% RSD
1	10	0.0055	1.37
2	10	0.0150	3.33
3	10	0.0190	3.78
4	10	0.0140	2.60
5	10	0.0080	1.34
6	10	0	0
7	10	0.0020	0.36
8	10	0.0110	2.09
9	10	0.0017	0.34
10	10	0.0054	1.12
11	10	0.0012	0.19
12	10	0.0270	4.46
13	10	0.0360	5.45