cardboard cryogenic tube Partition, Tubes: 15 mL, Color: White, 36 wells, well diameter: 17.5 mm, also with Write-on surface for descriptions or self numbering systems, quick/inexpensive solution with the added co
Sodium light source, 20W low pressure discharge lamps for spectral work. Delivers approximately 350 lux at 20 cm and more than 90% of the light is concentrated in the doublet at 588.9/589.5 nm. Faint lines of the mercury spectrum are also visible.
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