This image features chemistry flasks (erlenmeyer flasks, laboratory glassware) filled with red, blue, yellow and purple liquid. Red, blue, yellow and purple hearts are flowing up from the flasks. Also, there are red, blue, yellow and purple hearts in the flasks. The heart symbol or heart shape is used to express the idea of the “heart” in its metaphorical or symbolic sense as the center of emotion, including affection and love, especially romantic love. Perfect gift for Valentine’s Day and all those that are in love!