2 results
- High Purity Helium Gas Ampoule spectrum tube SUPER bright!Opens in a new window or tabStrongest glow of any availabe discharge tube!Brand NewS$ 58.69the-element-shop (639) 100%+S$ 66.20 postagefrom Austria
- Helium gas ampoule, purity 99.9993% element sample PREMIUM versionOpens in a new window or tabBrand NewS$ 25.01the-element-shop (639) 100%+S$ 66.20 postagefrom Austria