Review on ⏳ PROLOSO 30 Sec Sand Timer Hourglass Sandglass Clock Countdown Bulk Toy Set - Fun Timers for Kids Games, Classroom, School - Party Favors Pack of 20 (White Sand) by Misty Gomez

I calculated it to be 30 seconds (unofficial) and it was 30 seconds. Also, these things aren't elegant and don't fall apart in your hand. They are sealed well and I hope they last a long time. I use them around my house to hold people in their hands for at least 30 seconds. The US Centers for Disease Control and Prevention recommends 20 seconds, but what harm can another 10 seconds do? Better than washing in 5 seconds right? I have one by every sink in the house so people can wash their hands long enough. Then I have Lysol to spray on afterwards.