Color is not claimed as a feature of the mark.
The mark consists of an image of a raindrop in front miscellaneous curved lines. The image is enclosed in a circle that is enclosed inside a thick border. Located inside the upper part of the border is the word PRETX in upper case text. The bottom part of the border has the words BIOFILTER PRETREATMENT in upper case letters.
PRETX BIOFILTER PRETREATMENT