Ground size
Specifications
Compare modelsAlternative in-stock items
SG $33.35
Inc. GST
The Bohlender Joint Sleeves PTFE for NS 24/29 are designed to provide a reliable, grease-free seal for ground glass joints in laboratory applications. Crafted from high-quality PTFE, these sleeves feature sealing ribs that grip the inside wall of the glass socket, ensuring a secure connection without the need for lubricants. They are reusable, long-lasting, and suitable for vacuum applications up to 0.1 mbar, making them ideal for various laboratory setups.
These PTFE joint sleeves are essential for laboratories seeking efficient and reliable sealing solutions for ground glass joints without the complications of grease.
Manufacturer P/N
H 933-05
Part Number
9.011 644
Manufacturer
Bohlender
Ground size
NS 24/29
Manufacturer P/N
H 933-03
Part Number
9.011 642
Manufacturer
Bohlender
Ground size
NS 14/23
Manufacturer P/N
H 933-06
Part Number
9.011 645
Manufacturer
Bohlender
Ground size
NS 29/32
Manufacturer P/N
H 933-09
Part Number
9.011 647
Manufacturer
Bohlender
Ground size
NS 45/40
Manufacturer P/N
H 933-04
Part Number
9.011 643
Manufacturer
Bohlender
Ground size
NS 19/26
Sleeves with ribs, PTFE
It are designed to provide a reliable, grease-free seal for ground glass joints in laboratory applications. Crafted from high-quality PTFE, these sleeves feature sealing ribs that grip the inside wall of the glass socket, ensuring a secure connection without the need for lubricants. They are reusable, long-lasting, and suitable for vacuum applications up to 0.1 mbar, making them ideal for various laboratory setups.
_0.png&w=3840&q=75)
7 mins read
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.
7 mins read
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.
9 mins read
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.
9 mins read
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.
_0.png&w=3840&q=75)
6 mins read
Laboratory balances are essential weighing instruments used to measure samples, reagents, powders, chemicals and materials with accuracy and consistency. They are commonly used in research, education, quality control, pharmaceutical testing, food testing, industrial laboratories and general scientific workflows.
