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SAVE $3.90$21.05$24.95United Scientific Spectrum Tube - Water VaporAmazon- $40.50United Scientific Spectrum Tube - HeliumAmazon
- SAVE $4.34$21.69$26.03United Scientific SPTDT01 Glass Spectrum Tube, DeuteriumAmazon
- $19.99United Scientific Supplies SPT2HH1, Hydrogen and Helium Spectrum TubeAmazon
- $18.00Color Chart Print, Full Spectrum Poster, Vintage Style Scientific Illustration, Am116Etsy