Representative Image

Lenz-Laborglas Round-Bottom Flasks, Two-neck, Side Neck Parallel, C. Neck NS 29/32, Side Neck NS 14/23, 3204137

Ø

Ground size side necks

Nominal capacity

Specifications

Compare models
Colour
Clear
Ø
64 mm
Ground size centre neck
NS 29/32
Ground size side necks
NS 14/23
Material
DURAN® glass
No. of necks
2
Nominal capacity
100 ml
UNSPSC
41121804
With beaded rim
No

RM 203.50

Inc. GST

Available soon

Product description

The Lenz-Laborglas Round-Bottom Flasks, Two-neck, Side Neck Parallel, C. Neck NS 29/32, Side Neck NS 14/23 are designed for laboratory applications requiring parallel side neck connections for multiple laboratory instruments. These flasks feature a central neck with a larger NS 29/32 socket and a side neck with a smaller NS 14/23 socket, providing flexibility and convenience for various chemical processes. Made from high-quality borosilicate glass, these round-bottom flasks offer superior thermal and chemical resistance, making them ideal for distillation, synthesis, and other laboratory experiments.

Key Features:

  • Brand: Lenz-Laborglas
  • Neck Design: Two-neck, side neck parallel, central neck
  • Socket Sizes: NS 29/32 for central neck, NS 14/23 for side neck
  • Material: Borosilicate glass for excellent thermal and chemical resistance
  • Design: Round-bottom flask with parallel side necks for flexible lab connections
  • Application: Perfect for distillation, chemical synthesis, and laboratory experiments requiring precise connections

This Lenz-Laborglas round-bottom flask offers a versatile and reliable solution for laboratories requiring secure and flexible connections for various chemical processes.

Downloads

Accessories

Flask rings, pressed cork

ProductMaterialExt. ØMfr#Part#AvailabilityPrice
Cork80 mmKOLBENRING 89.143 003In stockRM 16.50
Cork110 mmKOLBENRING 119.143 006In stockRM 22.00
Cork170 mmKOLBENRING 179.143 012In stockRM 55.00
Cork210 mmKOLBENRING 219.143 015In stockRM 82.50
Cork140 mmKOLBENRING 149.143 009In stockRM 38.50
Cork140 mmKOLBENRING 14.VE4.667 533In stockRM 357.50
Cork80 mmKOLBENRING 8.VE4.667 531In stockRM 148.50
Cork110 mmKOLBENRING 11.VE4.667 532In stockRM 220.00
Cork170 mmKOLBENRING 17.VE4.667 534In stockRM 500.50

Flask support rings, "BiBase", silicone elastomer

ProductTemperature resistanceMaterialMfr#Part#AvailabilityPrice
-60 ... 200 °CSilicone rubber1610409.143 035In stockRM 225.50
-60 ... 200 °CSilicone rubber1610429.143 036In stockRM 302.50
-60 ... 200 °CSilicone rubber1610449.143 037RM 572.00

Compare similar models

Round-bottom Flasks, Two-neck, Side Neck Parallel, C. Neck NS 29/32 Side Neck NS 14/23

Manufacturer P/N

03204137

Part Number

9.011 924

Manufacturer

Lenz-Laborglas

Ø

64 mm

Round-bottom Flasks, Two-neck, Side Neck Parallel, C. Neck NS 29/32 Side Neck NS 14/23

Manufacturer P/N

03204149

Part Number

9.011 926

Manufacturer

Lenz-Laborglas

Ø

85 mm

Round-bottom Flasks, Two-neck, Side Neck Parallel, C. Neck NS 29/32 Side Neck NS 14/23

Manufacturer P/N

03204158

Part Number

9.011 928

Manufacturer

Lenz-Laborglas

Ø

105 mm

Round-bottom Flasks, Two-neck, Side Neck Parallel, C. Neck NS 29/32 Side Neck NS 14/23

Manufacturer P/N

03204170

Part Number

9.011 931

Manufacturer

Lenz-Laborglas

Ø

131 mm

Round-bottom Flasks, Two-neck, Side Neck Parallel, C. Neck NS 29/32 Side Neck NS 14/23

Manufacturer P/N

03204173

Part Number

7.019 207

Manufacturer

Lenz-Laborglas

Ø

166 mm

Round-bottom Flasks, Two-neck, Side Neck Parallel, C. Neck NS 29/32 Side Neck NS 29/32

Manufacturer P/N

03204470

Part Number

9.011 932

Manufacturer

Lenz-Laborglas

Ø

131 mm

Round-bottom Flasks, Two-neck, Side Neck Parallel, C. Neck NS 29/32 Side Neck NS 29/32

Manufacturer P/N

03204458

Part Number

9.011 930

Manufacturer

Lenz-Laborglas

Ø

105 mm

Round-bottom Flasks, Two-neck, Side Neck Parallel, C. Neck NS 29/32 Side Neck NS 29/32

Manufacturer P/N

03204449

Part Number

9.011 927

Manufacturer

Lenz-Laborglas

Ø

85 mm

Round-bottom Flasks, Two-neck, Side Neck Parallel, C. Neck NS 29/32 Side Neck NS 29/32

Manufacturer P/N

03204473

Part Number

6.306 990

Manufacturer

Lenz-Laborglas

Ø

166 mm

Round-bottom Flasks, Two-neck, Side Neck Parallel, C. Neck NS 29/32 Side Neck NS 29/32

Manufacturer P/N

03204479

Part Number

6.901 710

Manufacturer

Lenz-Laborglas

Ø

207 mm

Frequently asked questions

It are designed for laboratory applications requiring parallel side neck connections for multiple laboratory instruments. These flasks feature a central neck with a larger NS 29/32 socket and a side neck with a smaller NS 14/23 socket, providing flexibility and convenience for various chemical processes. Made from high-quality borosilicate glass, these round-bottom flasks offer superior thermal and chemical resistance, making them ideal for distillation, synthesis, and other laboratory experiments.

Insights

Explore
Cleaning Lab Glassware: Removing Stubborn Residue

1 min read

Cleaning Lab Glassware: Removing Stubborn Residue

Cleaning laboratory glassware properly is essential for accurate, safe, and repeatable lab work. This guide explains how to remove stubborn residue from beakers, flasks, bottles, volumetric glassware, and other lab glassware, including grease, dried salts, biological residue, stains, and burnt deposits. It also covers safe cleaning methods, common mistakes, drying and storage tips, and when damaged glassware should be replaced.

Read full story
How to Calibrate Your Pipettes to ISO 8655 Standards

1 min read

How to Calibrate Your Pipettes to ISO 8655 Standards

Pipette calibration helps laboratories confirm that liquid handling results remain accurate, repeatable, and traceable. This guide explains how pipettes are calibrated to ISO 8655 standards, including gravimetric testing, environmental control, correct tip selection, volume testing, calibration records, and common mistakes to avoid. It also covers when to use in-house calibration and when an external calibration service may be more suitable.

Read full story
Molarity and Dilution Calculator

1 min read

Molarity and Dilution Calculator

A free molarity and dilution calculator covering four essential lab calculations: C1V1=C2V2 dilution (solve for any unknown), molarity from mass, mass from molarity, and serial dilution table generation. Includes worked examples, a concentration units guide and step-by-step preparation instructions for every result.

Read full story
Buffer Preparation Calculator

1 min read

Buffer Preparation Calculator

Free online buffer preparation calculator. Select your buffer system, enter target pH, concentration and volume, and get an exact lab-ready recipe with reagent masses and step-by-step instructions. Covers PBS, Tris-HCl, sodium phosphate, acetate, HEPES, MOPS and more.

Read full story

RM 203.50

Inc. GST