Filter products
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                                            - General laboratory consumables
- Occupational safety, Security
- Analytical measurement and testing
- Stirring, Shaking, Mixing
- Sample preparation
- 
                                                                                                                        
                                                                                    Distillation, separation, filtration
                                                                            
                                                            
                                                                                                                                        
    
                        
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                                                                                    Distillation, synthesis
                                                                            
                                                            
                                                                                                                                        
    
                        
            - Flasks with NS joint neck
- Components for reaction and distillation
- Flat ground flange reaction vessels
- KPG stirrer and bearings
- Dropping Funnels
- Reflux condenser
- Distillation-Accessories
- Components for Extraction
- Gas wash bottles
- Tubing adapters
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                                                                                    Standard ground stoppers
                                                                            
                                                            
                                                                                                                                        
    
                        
            
- NS joints accessories
- Ground joints, attachable
- Stopcocks and Valves
- Laboratory reactors
 
- Rotary evaporators
- Separating, centrifuging
- Filtration
 
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                                                                                    Distillation, synthesis
                                                                            
                                                            
                                                                                                                                        
    
                        
            
- Heating and cooling technology
- Liquid Handling
- Vacuum technology, Drying, Dry storage
- Optical instruments and Microscopes
- Cleaning and sterilisation
- Environmental-, soil-, water-, food analysis
- Life Sciences
- Chromatography
- Cleanroom
- About Us
                                                                                        
                                                                                            
                                    Conical ground joint stoppers, PP
                                
                            
                                                            
                                    
                                                                            
                                
                            
                                                            
                                    
                                    Hollow, with sealing rings and square grip. Autoclavable (121 °C).
                                
                            
                                
    
                                                                    
                            
            
                                                                
                                                                                        
                                                                                            
                                    Hexagonal hollow stopper DURAN®, flat
                                
                            
                                                            
                                    
                                                                            
                                
                            
                                                            
                                    
                                    For closing glassware such as ground flasks or laboratory bottles. DG-joint quality.
                                
                            
                                
    
                                                                    
                            
            
                                                                
                                                                                        
                                                                                            
                                    NS-Glass stoppers, hollow borosilicate glass 3.3
                                
                            
                                                            
                                    
                                                                            
                                
                            
                                                            
                                    
                                    Manufactured from borosilicate glass 3.3 which is resistant to heat and almost all chemicals. They meet the highest quality standards according to DIN 12252. Lower closed end of stopper features a "drip-tip" to ensure adhered liquid is returned to the flask. Hexagonal flat head prevents the stopper from rolling and allows stopper to be stood on end preventing contamination of the ground surface.
                                
                            
                                
    
                                                                    
                            
            
                                                                
                                                                                        
                                                                                            
                                    Conical stoppers, NS, PE
                                
                            
                                                            
                                    
                                                                            
                                
                            
                                                            
                                    
                                    Stoppers manufactured to DIN standard 12242 ensuring an effective seal, even on non-standard surfaces.
                                
                            
                                
    
                                                                    
                            
            
                                                                
                                                                                        
                                                                                            
                                    Conical ground joint stoppers, borosilicate glass 3.3
                                
                            
                                                            
                                    
                                                                            
                                
                            
                                                            
                                    
                                    DIN 12252. Solid or semi-hollow, with octagonal grip.
                                
                            
                                
    
                                                                    
                            
            
                                                                
                                                                                        
                                                                                            
                                    LLG-Hexagonal hollow stoppers, borosilicate glass 3.3, pointed
                                
                            
                                                            
                                    
                                                                            
                                
                            
                                                            
                                    
                                    For closing glassware with standard ground joints. The drip tip ensures that adhering liquid flows back into the glassware. Hexagonal shape prevents the stopper from rolling away. Acc. to DIN 12252.
                                
                            
                                
    
                                                                    
                            
            
                                                                
                                                                                        
                                                                                            
                                    Hexagonal hollow stopper DURAN®, pointed
                                
                            
                                                            
                                    
                                                                            
                                
                            
                                                            
                                    
                                    For closing glassware such as ground flasks or laboratory bottles. DG-joint quality.
                                
                            
                                
    
                                                                    
                            
            
                                                                
                                                                                        
                                                                                            
                                    Hollow stoppers, hexagonal plate, glass
                                
                            
                                                            
                                    
                                                                            
                                
                            
                                                            
                                    
                                    Glass stopper for tight sealing of standard ground vessels, DIN 12 252.
                                
                            
                                
    
                                                                    
                            
            
                                                                 
                                                                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                                                                 
                                                                    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