Figure 2From: The effect of a new formaldehyde-free binder on the dissolution rate of glass wool fibre in physiological saline solution Small binder droplets with fibre diameter measurable deep within the droplet. Optical micrograph of four small binder droplets from sample 2 in which it is possible to measure the fibre diameter at any point in the droplet. The red arrow marks a typical measurement location for fibres in small binder droplets.Back to article page