Secure orders can be placed online via credit card, PayPal, or check/money order!

All online orders are now handled exclusively through "What If...?" Scientific's subsidiary shop, Leave Only Bubbles. In addition to density flow models, Leave Only Bubbles is home to many other marine science curriculum supplies. To place an online order, please visit LeaveOnlyBubbles.com or click on any corresponding "Buy Online" button found throughout this site. If you prefer to order offline, please print the Offline Order Form and send or fax it to:

Density Flow Model "Original" ($359.00)

Density Flow Model "Junior" ($179.00)

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