Explanatory notes
… 7017.20 - Of other glass having a linear coefficient of expansion not exceeding 5 x 10 -6 per Kelvin within a … Woulf’s, etc.), special tubes (gas washing, drying, condensation, filter, gas burettes, test-tubes, etc.), … dishes, drying cylinders, filter plates and discs, spoons, desiccators, dialysers, adapters, condensers, …