Science and Kashrus:

• Animal fat and vegetable oil (glycerin, fatty acids);
• Vape juice, e-cigarettes, and flavors;
• Glucose;
• Medicine;
• Vacuum and pressure.

See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com