Spiral of Theodorus Kit is to explore triangular relations by studying right triangles and by building the Spiral of Theodorus. Contains 18 wooden triangles, labels, pen and instruction guide. Hands-on activities aid in the conceptualization of abstract mathematical ideas
Sturdy and thick walled plastic test tube with cap is made from soda bottle material, ensures a durable test tube with a tightly screwed cap, to maximize lab use and minimize leaks. Total length is 126mm, inner diameter is 22mm, and outer diameter is 24mm.
Insta-Test 5-Way Natural way Test Strips, provide fast results for Nitrate, Nitrite, pH, Alkalinity and Total Hardness. Applications: Industrial Water Boiling and Cooling, Laundry and Sanitation, Water and Wastewater, Food and Beverage, Drinking Water
Marina Bio Clear Cartridge for Slim Filters, 3 pack, Ideal for goldfish, the filter cartridge contains zeolite and Ceramitek for optimum filtration and a healthy aquarium, activated carbon effectively removes poll
Calibration Test Kit, Y tubing with inflation bulb, valve, and various connectors to permit testing of accuracy for aneroids or mercury sphygs against unit of known accuracy, Not made with natural rubber latex, Assembled in the USA
Marina 360/Marina Splash Replacement Filter Cartridge, with carbon and zeolite, improves water clarity and color while removing polutants and odors. This replacement filter cartridge is designed use with the Marin
Marina Bio Carb Cartridge for Slim Filters, 3 pack, Ideal for tropical fish, the filter cartridge contains activated carbon and Ceramitek for optimum filtration and a healthy aquarium, activated carbon effectively
Fluval Vista Aquarium Kit, Glass Aquarium with Panoramic Seamless Design, Energy-efficient (700 lm, 8000 K) Soft Start LED lamp-mimics the sun naturally, Fish Net, Fluval Care Guide, Aquaclear 20 Power Filter with
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