{"product_id":"united-scientific®-magnetic-field-demonstrator","title":"United Scientific® Magnetic Field Demonstrator","description":"This is a quick and clean way to visualize magnetic fields. The demonstrator is a transparent acrylic case that holds iron filings suspended in a fluid of mineral oil. When it is placed over a magnet, the field pattern can be viewed directly, or it can be placed on an overhead projector for classroom demonstration. The size demonstrator is 8” x 4½” x ⅜”.","brand":"United Scientific Supplies","offers":[{"title":"Default Title","offer_id":49962328097045,"sku":"USSMGFD03","price":46.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/MGFD03_20Magnetic_20Field_20Demonstrator.jpg?v=1781072064","url":"https:\/\/unitedsupplycorp.com\/products\/united-scientific%c2%ae-magnetic-field-demonstrator","provider":"United Supply Corp.","version":"1.0","type":"link"}