Ground joint connection eliminates phthalate contamination that can occur when using silicone or neoprene stoppers Support base has a coarse porosity glass frit and an integral vacuum connection, located above the drip tip that prevents contamination of the vacuum line with filtrate droplets Choose from individual components and kits 1) Funnel: 100mL: 06-717-521 300mL: 06-717-519 500mL: 06-717-522 1000mL: 06-717-523 2) Aluminum Clamp: 06-717-520 3 & 4) Fritted Glass Support: 06-717-520 (these are one integral unit, not two pieces) 5) Flask: 1000mL: 06-717-526 2000mL: 06-717-527 4000mL: 06-717-528 Kits: 300mL Funnel, 1000mL Flask: 06-717-524 500mL Funnel, 2000mL Flask: 06-717-530 Each kit includes one funnel (from No
1), one aluminum clamp (No
2), one integrated fritted glass support base (Nos
3 & 4), and one flask (from No
5) Additional Items: Flask Cap (glass stopper for flask): 06-717-529 PTFE Joint Sleeve (used as a substitute for vacuum grease): 06-717-518