This 250ml, flat bottom, narrow neck flask features a smooth rim and heavy, uniform wall thickness. Glassco brand borosilicate glassware is a lower cost, ISO certified, alternative to PYREX brand. The flask is printed with capacity and marking spot. NC-8071
This 500ml, flat bottom, narrow neck flask features a smooth rim and heavy, uniform wall thickness. Borosilicate glassware is a lower cost, ISO certified, alternative to PYREX brand. The flask is printed with capacity and marking spot. NC-7899
This 1000ml, flat bottom, narrow neck flask features a smooth rim and heavy, uniform wall thickness. Borosilicate glassware is a lower cost, ISO certified, alternative to PYREX brand. The flask is printed with capacity and marking spot. NC-3153
