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Educational Value: For students and educators
and a powerful audible alarm to clearly communicate CO2 conditions at the entrance of any grow space
Hydropolis Grow Tent
Temp Control: 5-42°C (40~ 108ºF)
this fan presents an astounding performance of 1880CFM
Sugar/Brix Refractometer 28-62% refurbished-products Educational Value: For students andUse this refractometer to test solutions with a higher sugar content, such as fruit juice concentrates, canned fruits containing added sugar, or ketchup as well as for egg yolk. Place a drop or two of a sample on the prism and read the results. Sper Scientific portable refractometers work in ambient light with no battery or other power source necessary. A refractometer measures the extent to which light is bent (refracted) through a liquid sample.
