Lenz-Laborglas GmbH & Co. KG

Dropping funnels, cylindrical, with pressure equalizing tube, borosilicate glass 3.3, with PTFE key ( 6223427 )

Article number: 6223427
Herstellernummer: 04372814

€101.20*

Packaging unit: 1 piece

on order

Quantity Unit price
€101.20*
from 2
€92.00*
Bore
Cone[s]
Division
Manufacturer Article Number
Nominal capacity
Socket[s]
Filter
   Available
  
   on order
Product information "Dropping funnels, cylindrical, with pressure equalizing tube, borosilicate glass 3.3, with PTFE key"
Cylindrical shape, with pressure equalizing tube. With NS socket and NS cone, plug with retaining device.
Bore: 2.5 mm
Cone[s]: NS29/32
Division: 1 ml
Manufacturer Article Number: 04372814
Material: Boro 3.3
Material stopcock: PTFE key
Nominal capacity: 50 ml
Shape (Dropping funnels): Cylindrical
Socket[s]: NS29/32
UNSPSC: 41-12-18-09
With pressure compensation: Yes
Manufacturer "Lenz-Laborglas GmbH & Co. KG"

Products from Lenz-Laborglas GmbH & Co. KG – High-Precision Laboratory Glassware for Research and Process Optimization

Lenz-Laborglas GmbH & Co. KG has been a trusted name for decades, offering premium laboratory glassware made from DURAN® glass, borosilicate glass 3.3, and advanced materials such as PTFE. At häberle LABORTECHNIK, professionals in research, quality assurance, and the chemical-pharmaceutical industry will find a comprehensive selection tailored precisely to the demands of modern laboratories.

Laboratory Glass Instruments for Analytical Precision and Process Safety

Lenz provides a wide range of glass apparatus and components known for their chemical resistance, mechanical durability, and thermal stability.

Examples include:

  • Dropping funnel with pressure equalizer (e.g. 50 ml, NS 19/26, PTFE stopcock )

  • Ground joint lid (e.g. DN 200, MH NS 45/40)

These components enable safe execution of complex chemical reactions and allow for modular system expansion.

Glass Equipment for Reactions, Distillation, and Extraction

The product range supports essential laboratory applications:

  • Distillation heads, bent 105°

  • Vacuum adapters with threaded or socket connections

  • Soxhlet extraction apparatus, 150 ml, NS 45/40

Specialized condensers provide optimal temperature control:

  • Intensive condensers with plastic olives

  • Coil condensers with glass olives

  • Allihn and Davies condensers for reflux and extraction processes

Connection Components: Adapters and Stopcocks

Flexible connection solutions include:

  • Bent adapters, 90°, with or without stopcock

  • Straight adapters

  • Variants with NS sockets, DURAN® tubing, or PTFE stopcocks

  • Stopcocks for desiccators made of borosilicate glass 3.3

These elements ensure safe, standardized integration within laboratory setups.

Technical Accessories for Advanced Reaction Systems

Special components for large-scale setups and precise measurements:

  • Double-blade stirrer, PTFE/steel for 30,000 ml vessels

  • Temperature sensor Pt 100, NS 14/23

  • Complete stand system for LF 200 – approx. dimensions W 1.0 × D 0.5 × H 2.0 m

These solutions support reliable control, measurement, and integration into laboratory processes.

Industry Trends: Standardization, Modularity, and Chemical Resistance

Recent developments in lab glass manufacturing are driven by:

  • Increased modularity for flexible laboratory workflows

  • Durable, chemically resistant materials like DURAN® glass and PTFE

  • Consistent standardization (e.g., NS 14/23, NS 29/32) for system-wide compatibility

These trends enhance safety, process efficiency, and investment value in modern laboratories.



Accessories

Sleeves, PTFE, disposable
Seals without grease - no grease residues are left in the analysis. Excellent chemical resistance. Can be used in temperatures from -200 to 260°C. Wall thickness only 0.05mm. Wide range of applications, also suitable for vacuums down to 0.1mbar, e.g. for rotary evaporators.
Variants from €3.96*
BUDDE - joint grease
For all glass joints. Transparent, vacuum tight, water washable and water soluble. Maintains practically the consistency between -30°C and 200°C, non-solidifying. Compatible with most elastomers. Tube of 80g.
Variants from €27.00*
Gas leak detection fluid
DIN 30657 gas, trace and leak detection fluid. Non-allergenic, non-toxic and odourless. Suitable for all pressure ranges. Non-flammable and therefore suitable for all technical gases such as ammonia, argon and other noble gases, freon, carbon dioxide, coal gas, compressed air, propane, oxygen, nitrogen, water etc. Propellant-free. Unpressurised canister. Flash-point greater than 50°C. Unlimited shelf life. Tested and approved under DIN-DVGW-No. NG to 5170 AN 0456.Spray head not included. Please order separately.
Variants from €8.70*
PTFE sealing rings for jointed glassware
An effective alternative to common PTFE joint sleeves and PTFE stoppers.Air leakage
Variants from €31.02*
Joint grease, K.W.S
Without silicone. Designed as vacuum and high vacuum grease. No silicone derivatives, polymerisation or gumming. Excellent adhesion and viscosity. Acid/alkaline resistant. Locked joints can be loosened by brief, gentle heating. Can be used to make temporary glassware repairs. Biodegradable. Non-toxic in normal use.Working temperature range:-40 ... 200 °C, to 10-5 mbarVapour pressure:0.00001 mbar
Variants from €18.32*
Engler distilling flasks, DURAN®, ASTM, with beaded rim
Uniform wall thickness distribution makes these flasks ideal for heating applications and distillations. The flasks are manufactured from a hydrolytically resistant borosilicate glass 3.3, which is defined as "Type I, Class A" in the ASTM Specification E 438.ASTM D86DIN EN ISO 3405
Variants from €49.24*
Sleeves with ribs, PTFE
For use with ground glass joints. Suitable for vacuums up to 0.1mbar. Reusable and long lasting. The sealing ribs grip on the inside wall of the glass socket, sealing without the need for grease and enabling the cone to be freed easily when required.
Variants from €3.30*
Joint clips KECK, POM, for spherical ground joints
Melting point 175 °C. Excellent chemical resistance. Rigid. Heat resistant up to 150 °C, sizes colour coded.
Variants from €4.15*
Sleeves, cone joint, PTFE
With knurled gripping ring at the top of the cone for easy removal. For gas, liquid and vacuum-tight cone joint connections with sizes as outlined below. Reusable. With reinforced external ribs for a high-vacuum tight seal (leakage rate: < 1x10-4mbar x I x s-1). No joint sealant or grease required.
Variants from €8.80*
Joint clips KECK, POM, for conical ground joints
Melting point 175 °C. Excellent chemical resistance. Rigid. Heat resistant up to 150 °C, sizes colour coded.
Variants from €3.04*