Reflective pH Patches
Our flexible peel-and-stick pH patches can be adhered to the inner wall of a transmissive container or process line, such as a bioflask or clear tube, and then interrogated non-invasively through the container using a fiber optic bundle probe.
Our pH patches are unique in that, despite being a color-based measurement, they are immune to ambient light, sample color, and turbidity. This is achieved by using a novel electroformed gold mesh overlay that acts as an optically reflective yet ion permeable layer; being gold also makes the overlay biologically and chemically inert. These are ideal for applications such as fermentation and cell culture monitoring.