US$ 38.99
sized to drop into the demonstration meter and reconfigure it as a center-zero ammeter
Designed for educational purpose and science classroom demonstrations in optics and light physics
carbon discs
Mid-low-range resistance box stepping from 10 ohms to 100 ohms in 10-ohm increments on a single rotary dial
Phenol Red Dextrose Differential Medium Size:500g sized to drop into theColor change indicator distinguishes bacteria by their ability to ferment dextrose, shifting from red to yellow when acid fermentation products accumulate.
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US$ 38.99
US$ 38.99
US$ 13.90
US$ 29.90
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US$ 61.00
US$ 203.00