PORTLAND, Ore. -- Remember those baking soda and vinegar volcanoes you made back in elementary school? Well OMSI made one too.
On Sunday, the museum attempted to set a new Guinness World Record for the world's largest baking soda and vinegar volcano. According to The Oregonian, OMSI estimated a crowd of about 3,000 people showed up to watch the eruption.
OMSI used 66 gallons of vinegar and about 50 gallons of a baking soda-water mixture in the 34-foot structure. Many in the crowd and those watching a live stream of the event said they were underwhelmed by the eruption, which consisted of liquid spraying out of the top of the structure.
However, OMSI event planner Sonali Shivdasani told The Oregonian the museum was "100 percent confident" that the attempt set a new world record. It will take months to confirm, but Shivdasani said the 34-foot structure's eruption was estimated at 6-8 feet.
The previous record was 28 feet tall with a four-foot eruption, set by a school in the United Kingdom in 2015.
The experiment was in honor of the Pompeii Exhibition now at the museum. But it was also something OMSI has long wanted to do.
"It's something really exciting that OMSI has always wanted to do in terms of breaking a world record," said Libby Trobitz with OMSI. "I think it's going to be a lot of fun, hands on science."
Before Sunday's event, the museum said it had already secretly tested the volcano and was confident it would break the record.