Marina air stone is ideal for adding accents in any aquarium the air stone diffuses air, creating water movement. The air stone also increases surface agitation, accelerates oxygen replenishment and helps release
Concave Mirror, Material: Glass, Round, designed for physics and educational uses, thickness varies as they are not designed to be consistent in that respect, Because of their educational use design, there may be minor imperfection, Size: 1.5in Diameter, 150mm FocalLength, 2mm Thick
Concave Mirror, Material: Glass, Round, designed for physics and educational uses, thickness varies as they are not designed to be consistent in that respect, Because of their educational use design, there may be minor imperfection, Size: 1.5in Diameter, 200mm Focal Length, 3mmThick
Convex Mirror, Material: Glass, round, designed for physics and educational use, Because of their educational use design, there may be minor imperfections that do not affect physical function, thickness varies as they are not designed, Size: 2in Diameter, 300mm Focal Length, 2mm Thick
Marina Standing Thermometer - Celsius and Fahrenheit, designed to sink to the bottom of the aquarium and remain in a vertical position, Centigrade, Has a safety zone temperature range indicator for most tropical fi
Evaporating Basin, made from high quality Porcelain, round form with spout, For use with high purity samples, Fully Glazed except outside base, strong, durable, Superior quality, outer dia 75 mm, height 30 mm, Capacity: 70 ml, Product Dimensions: 7.5 x 7.5 x 3.5 cms, 44 g
Convex Mirror, Material: Glass, round, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, thickness varies as they are not designed, Size: 2in Diameter, 300mm FocalLength, 2mm Thick
Evaporating Basin, made from high quality Porcelain, round form with spout, For use with high purity samples, Fully Glazed except outside base, strong, durable, Superior quality, outer dia 60 mm, height 24 mm, Capacity: 35 ml, Product Dimensions: 6 x 6 x 2.5 cms, 31 g
Convex Mirror, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, Optically worked, silvered back with protective coating, Size: 1.5in diameter, 100mm Focal Length
Concave Mirror, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, Optically worked, silvered back with protective coating, Size: 2in diameter, 75mm Focal Length
Convex Mirror, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, Optically worked, silvered back with protective coating, Size: 1.5in diameter, 50 mm Focal Length
Convex Mirror, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, Optically worked, silvered back with protective coating, Size: 1.5in diameter, 150mm Focal Length
Evaporating Basin, made from high quality Porcelain, Round bottom with Spout, For use with high purity samples, Fully Glazed except outside base, strong, durable, Superior quality, Approximate 150ml capacity, Basin measures approximately 4 in diameter and 1.7in tall
Evaporating Basin, made from high quality Porcelain, round form with spout, For use with high purity samples, Fully Glazed except outside base, strong, durable, Superior quality, outer dia 94 mm, height 42 mm, Capacity: 120 ml, Product Dimensions: 8.5 x 8.5 x 4 cms, 73 g
Evaporating Basin, made from high quality Porcelain, round form with spout, For use with high purity samples, Fully Glazed except outside base, strong, durable, Superior quality, outer dia 80 mm, height 30 mm, Capacity: 80 ml, Product Dimensions: 8 x 8 x 3.5 cms, 51 g
Concave Mirror, Material: Glass, Round, designed for physics and educational uses, thickness varies as they are not designed to be consistent in that respect, Because of their educational use design, there may be minor imperfection, Size: 2in Diameter, 50 mm Focal Length, 3.3mmThick
Convex Mirror, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, Optically worked, silvered back with protective coating, Size: 1.5in diameter, 200mm Focal Length
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