Equilateral Prism, Material: Acrylic, Useful for experiments in Optics, Light Refraction and Wavelengths, Will create a rainbow (even in room light) by using the simple led light of a smart phone, User will need to create a small slit in a black piece of paper, Size: 1in Hx1in W
Equilateral Prism, Material: acrylic, Refractive index close to optical glass, can produce a rainbow from a non-monochromatic light source such as sun light, Perfect for student use, which will not break or chip like glass, is a softer material, Size: 25mm length, 25mm face size
AquaClear 20 Ammonia Remover is ideal for new or heavily populated freshwater aquariums. Controlling ammonia levels for fish, It removes and controls harmful ammonia and nitrite, creating a healthy aquatic environm
AquaClear 20 Activated Carbon Filter Insert improves water clarity in fresh and saltwater aquariums, for the AquaClear 20 Power Filter, it provides superior adsorption which eliminate odors, discoloration and impu
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