Fresnel Lens Magnifier, Diameter 150mm (5.9''), Focal Length 140mm, Acrylic Lens (not Glass), for Physics Classroom Education, Solar Heating, Magnifiying. (Focal Length 140mm) auspowers_batchthree You can also moisten the

You can also moisten the paper with distilled water and place in an area where Hydrogen Sulfide is thought to be present (an acetate buffer is not necessary)

Water- resistant labels Ideal for products that are frequently in contact with water or stored at low temperatures

5Pack Mini Car Phone Charger Cigarette Lighter USB Adapter Specification Input: DC 12-24V Output: 5V/2

Green/Safe/ Harmless materials for children

Fresnel Lens Magnifier, Diameter 150mm (5.9''), Focal Length 140mm, Acrylic Lens (not Glass), for Physics Classroom Education, Solar Heating, Magnifiying. (Focal Length 140mm) auspowers_batchthree You can also moisten theFresnel Lens Magnifier, Diameter 150mm (5. 9''), Focal Length 140mm, Acrylic Lens (not Glass), for Physics Classroom Education, Solar Heating, Magnifiying. (Focal Length 140mm) Size: ? 150mm Thickness: 2mm Material: PMMA (acrylic) Transmission (%): 92 (from 400 1100nm) Index of Refraction nd : 1. 491 Operating Temperature (C): 80 (Maximum) Product Features 1 Pack Fresnel Lens 150mm Focal length 140mm Thickness: 2mm, Material: PMMA (Acrylic) High Light