{"product_id":"magnetic-field-demonstrator-8x4-5x3-8","title":"Magnetic Field Demonstrator,8X4.5X3\/8\"","description":"A quick and clean way to visualize magnetic fields. The unit is a transparent acrylic case that holds iron filings in a fluid of proper viscosity. The unit can also be placed on an overhead projector for classroom demonstration. Unit measures 8”x 4-1\/2” x 3\/8”. 11oz. Ages 10+","brand":"Supertek Science","offers":[{"title":"Default Title","offer_id":49975050993941,"sku":"SPSPH41271S3","price":18.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/PH41271.png?v=1781497057","url":"https:\/\/unitedsupplycorp.com\/products\/magnetic-field-demonstrator-8x4-5x3-8","provider":"United Supply Corp.","version":"1.0","type":"link"}