We are looking for a new image to use on the front of a product brochure. The product is a water conditioner for agricultural sprays. The product alters the water so that its best suited to spray fertilizers and pesticides. The product turns the water pink when the optimal conditions have been met. In the past we have used water drops on a leaf or pink water drops on a leaf. We want to emphasize the colour indicator in the product but we don't want to use the same old image. For this version of the brochure we incorporated a magnifying glass but we want to see if there is something better we can do (perhaps with pink water droplets).