Blade and half-moon impeller


% Heidolph HR 18 Half-Moon Impeller (PTFE) • Our half-moon impeller is specially designed for use in round-bottom flasks with NS 29/32 or larger. Combined with the vacuum-tight PTFE stirrer guide, you get a completely tight reaction system. • The half-moon impeller HR 18 works best up to 1,700 ml. • The half-moon impeller consists of a PTFE blade and a PTFE-coated stainless steel shaft. The stainless steel core ensures the stability of the stirrer shaft and secure attachment in the overhead stirrer without the risk of breakage of conventional glass stirrer shafts. The diameter in the clamping area is 6,5 mm; the stirrer shaft with the thick-walled PTFE coating has a diameter of 8 mm. • Due to its anti-adhesive property (non-stick coating), the half-moon impeller is easy to clean and can be used up to a maximum application temperature of 250°C.	% Heidolph BR 14 Collapsible-Blade Impeller (V4A) • Especially when using narrow-necked vessels, e.g. round-bottom flasks, an stirring tool with collapsible blades is used. Just like our collapsible-blade impeller BR 14. • This blade impeller is ideal for dissolving and homogenizing in vessels with the following characteristics: • Ideal vessel diameter: 180 mm • Ideal ground clearance: 9 mm • Ideal filling level: 180 mm • Ideal volume: 4,600 ml • The collapsible-blade impeller BR 14 has a total length of 400 mm and is made of stainless steel. Its stirring shaft has a diameter of 8 mm.	% Heidolph BR 13 Square-Blade Impeller (V4A) • Due to its blade dimensions, the square-blade impeller BR 13 is ideal for loosening and homogenizing in vessels with the following characteristics: • Ideal vessel diameter: 140 mm • Ideal ground clearance: 7 mm • Ideal filling level: 140 mm • Ideal volume: 2,200 ml • The square-blade impeller BR 13 has a total length of 450 mm and is made of stainless steel. Its stirring shaft has a diameter of 8 mm.	% Heidolph BR 12 Pivoting-Blade Impeller (V4A) • Especially when using narrow-necked vessels, e.g. round-bottom flasks, a stirring tool with pivoting blades is used. Just like our pivoting-blade impeller BR 12. •This blade impeller is ideal for dissolving and homogenizing in vessels with the following characteristics: • Ideal vessel diameter: 120 mm • Ideal ground clearance: 6 mm • Ideal filling level: 120 mm • Ideal volume: 1,400 ml • The pivoting-blade impeller BR 12 has a total length of 400 mm and is made of stainless steel. Its stirring shaft has a diameter of 8 mm.
% Heidolph BR 11 Straight-Blade Impeller (V4A) • Due to its blade dimensions, the straight-blade impeller BR 11 is ideally suited for solutions, emulsions and suspensions in vessels with the following characteristics: • Ideal vessel diameter: 100 mm • Ideal ground clearance: 5 mm • Ideal filling level: 100 mm •Ideal volume: 800 ml • The straight-blade impeller BR 11 has a total length of 400 mm and is made of stainless steel. Its stirring shaft has a diameter of 8 mm.	% Heidolph BR 10 Cross-Blade Impeller (V4A) • Due to its blade dimensions, the straight-blade impeller BR 11 is ideally suited for solutions, emulsions and suspensions in vessels with the following characteristics: • Ideal vessel diameter: 100 mm • Ideal ground clearance: 5 mm • Ideal filling level: 100 mm • Ideal volume: 800 ml • The straight-blade impeller BR 11 has a total length of 400 mm and is made of stainless steel. Its stirring shaft has a diameter of 8 mm.