Colour
Sealing of closure
Specifications
Compare modelsSG $133.42
Inc. GST
The Roland Watzdorf Polypropylene (PP) White Screw Caps are designed for secure sealing of laboratory bottles and containers with a DIN 28 opening. Each cap features a cone-shaped sealing insert to ensure a tight, leak-proof seal, preventing contamination and preserving the integrity of the contents. Manufactured from durable polypropylene, these caps offer excellent chemical resistance and can withstand various laboratory conditions, making them suitable for a wide range of applications.
These screw caps are essential for laboratories requiring reliable and secure sealing solutions for their containers, ensuring sample integrity and safety during storage and handling.
SG $133.42
Inc. GST
Manufacturer P/N
DP28WDL36
Part Number
6.272 537
Manufacturer
Watzdorf
Colour
White
SG $177.89
Inc. GST
Manufacturer P/N
DP28SSE36
Part Number
6.272 536
Manufacturer
Watzdorf
Colour
Black
It are designed for secure sealing of laboratory bottles and containers with a DIN 28 opening. Each cap features a cone-shaped sealing insert to ensure a tight, leak-proof seal, preventing contamination and preserving the integrity of the contents. Manufactured from durable polypropylene, these caps offer excellent chemical resistance and can withstand various laboratory conditions, making them suitable for a wide range of applications.
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1 min 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.
1 min 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.
1 min 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.
1 min 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.
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1 min 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.
SG $133.42
Inc. GST
