OMSI attempted to set a record on Sunday by building the largest vinegar and baking soda ever.
This is one of the most popular science fair exhibits for kids, but on the grandest of scales.
The volcano was 34-feet high and they needed an eruption greater than four feet above the top of the volcano.
Around 3,000 people watched the eruption.
It appears the eruption beat the previous record, but it will take several months for the Guinness Book of World Records to verify the record.