All products


% 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 PR 33 Ringed Propeller (V4A) • Due to its blade dimensions, the ringed pitched-blade impeller PR 33 is ideal for solutions, emulsions and suspensions in vessels with the following characteristics: • Ideal vessel diameter: 165- 330 mm • Ideal ground clearance: 33- 66 mm • Ideal filling level: 165- 330 mm • Ideal volume: 3,500- 28,200 ml • The ringed pitched-blade impeller PR 33 has a total length of 400 mm and is made of stainless steel. Its stirrer shaft has a diameter of 8 mm.	% Heidolph PR 32 Ringed Propeller (V4A) • Due to its blade dimensions, the ringed pitched-blade impeller PR 32 is ideal for solutions, emulsions and suspensions in vessels with the following characteristics: • Ideal vessel diameter: 113- 225 mm • Ideal ground clearance: 23- 45 mm • Ideal filling level: 113- 225 mm • Ideal volume: 1,100- 8,900 ml • The ringed pitched-blade impeller PR 32 has a total length of 400 mm and is made of stainless steel. Its stirrer shaft has a diameter of 8 mm.	% Heidolph PR 31 Ringed Propeller (V4A) • Due to its blade dimensions, the ringed pitched-blade impeller PR 31 is ideal for solutions, emulsions and suspensions in vessels with the following characteristics: • Ideal vessel diameter: 83- 165 mm • Ideal ground clearance: 17- 33 mm • Ideal filling level: 83- 165 mm • Ideal volume: 400- 3,500 ml • The ringed pitched-blade impeller PR 31 has a total length of 400 mm and is made of stainless steel. Its stirring shaft has a diameter of 8 mm.
% Heidolph PR 30 Pitched-Blade Impeller (V4A) • Due to its blade dimensions, the pitched-blade impeller PR 30 is ideal for solutions, emulsions and suspensions in vessels with the following characteristics: • Ideal vessel diameter: 145- 290 mm • Ideal ground clearance: 29- 58 mm • Ideal filling level: 145- 290 mm • Ideal volume: 2,400- 19,200 ml • The pitched-blade impeller PR 30 has a total length of 400 mm and is made of stainless steel. Its stirring shaft has a diameter of 8 mm.	% Heidolph TR 21 Radial-Flow Impeller (V4A) • Due to the jagged shape of the stirrer blade, the radial flow impeller TR 21 is ideally suited for the construction of emulsions and the gassing or foaming of liquids in vessels with the following characteristics: • Ideal vessel diameter: 143- 250 mm • Ideal ground clearance: 25- 50 mm • Ideal filling level: 143- 250 mm • Ideal volume: 2,300- 12,300 ml • The radial-flow impeller TR 21 has a total length of 400 mm and is made of stainless steel. Its stirrer shaft has a diameter of 8 mm.	% Heidolph TR 20 Radial-Flow Impeller (V4A) • Due to the jagged shape of the stirrer blade, the radial flow impeller TR 20 is ideally suited for the construction of emulsions and the gassing or foaming of liquids in vessels with the following characteristics: • Ideal vessel diameter: 80- 140 mm • Ideal ground clearance: 14- 28 mm • Ideal filling level: 80- 140 mm • Ideal volume: 400- 2,200 ml • The radial-flow impeller TR 20 has a total length of 400 mm and is made of stainless steel. Its stirrer shaft has a diameter of 8 mm.	% 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.
% Heidolph Adapter for heating plate Ø135 mm For users who want to use accessories for magnetic stirrers with 145 mm plate in combination with a 135 mm model, this adapter plate is available so that no compromise is made. This plate does not replace the installation surface of the magnetic stirrer, but is placed on it. It is made of aluminum so as not to prevent heat transfer.	% Heidolph Boss head • Boss head made of anodized aluminum, used to fix retort clamps to stand rods for perfect vertical alignment. • Suitable for stand rods with up to 13.1 mm maximum diameter.	% Heidolph Retort Clamp • Standard laboratory clamp to hold glass devices on ground glass cone / socket for perfect vertical alignment. • The four prongs - cork-lined on the inside and aluminum on the outside - can securely hold glass devices with a diameter from 2 to 85 mm firmly in place.	% Heidolph PTFE Safety Cover for 1 Liter Heat-On Block • The PTFE safety cover ensures even more safety for every application with a Heat-On Block for a 1 liter round bottom flask. • Despite the reduced danger when using Heat-On Blocks compared with a conventional heating bath, the risk of burns is not zero. We therefore recommend using a safety cover made of chemical-resistant, easy-to-clean PTFE.
% Heidolph PTFE Safety Cover for 500 ml Heat-On Block • The PTFE safety cover ensures even more safety for every application with a Heat-On Block for a 500-ml round bottom flask. • Despite the reduced danger when using Heat-On Blocks compared with a conventional heating bath, the risk of burns is not zero. We therefore recommend using a safety cover made of chemical-resistant, easy-to-clean PTFE.	% Heidolph PTFE Safety Cover for 200 - 300 ml Heat-On Block • The PTFE safety cover ensures even more safety for every application with a Heat-On Block for a 200 - 300 ml round bottom flask. • Despite the reduced danger when using Heat-On Blocks compared with a conventional heating bath, the risk of burns is not zero. We therefore recommend using a safety cover made of chemical-resistant, easy-to-clean PTFE.	% Heidolph PTFE Safety Cover for Heat-On Multi-Well Holder • The PTFE safety cover ensures even more safety for every application with a Heat-On insert. • Despite the reduced danger when using Heat-On Blocks compared with a conventional heating bath, the risk of burns is not zero. We therefore recommend using a safety cover made of chemical-resistant, easy-to-clean PTFE. • This safety cover is only suitable for the Multi-Well holder that encloses the Heat-On inserts.	% Heidolph Heat-On Safety Handles (2 pieces) • The Heat-On safety lifting handles are like the handles on a hot pan: essential for your safety. • Available as a pair, the safety lifting handles are easy to operate. Simply press the blue button to insert and remove the handles. • The bottom element, which is placed in the Heat-On Block or the Multi-Well holder, is made of stainless steel.