Description
LABOCAP-caps without handle, black, are durable closures for glass culture vessels sized 17/18 mm in diameter. Made from chrome-nickel steel, they offer a solid metal finish and a compact shape without a handle, so vials remain easy to arrange in crowded racks and storage systems. The black colour provides a neutral, high-contrast code that is easy to spot among mixed sample sets in microbiology, molecular biology and cell-culture environments. Supplied in units of 100 pieces with a pack weight of 0,500 kg, they are convenient for laboratories that need a reliable reserve of culture-vial accessories. These LABOCAP caps from manufacturer ROTH SELECTION are intended for glassware in the 17/18 mm range and fit smoothly into standard culture-vial routines. The low-profile, handle-free geometry reduces snagging and keeps overall stack height modest during incubation or transport. Black coding supports clear separation of controls, replicates or process stages, helping teams keep parallel cultures organised from inoculation to evaluation in research and routine laboratory settings.
This article is part of Biological buffers (Tris, HEPES, MOPS), in Buffers & pH solutions.
Key features
- Pack size: 100 pc(s)
- Product type: LABOCAP-caps without handle
- Colour: black
- Material: chrome-nickel steel
- Fits glass Ø: 17/18 mm
- Weight: 0,500 kg
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Questions about LABOCAP-caps without handle, black, chrome-nikkel steel, f. glass. Ø 17/18mm
What is this article?
LABOCAP-caps without handle, black, chrome-nikkel steel, f. glass. Ø 17/18mm is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Biological buffers (Tris, HEPES, MOPS), inside Buffers & pH solutions, in Lab chemicals.
Tris, HEPES, MOPS and their relatives hold pH in a range that cells and proteins tolerate, with a pKa near the working pH. The useful range is roughly one unit either side of the pKa. A phosphate buffer and Tris are not interchangeable in a method that names one of them, because the ion itself has effects.
A buffer resists a change in pH when a little acid or base is added. It does that because a weak acid and its conjugate base are both present. A pH buffer used to calibrate a meter has a stated value at a stated temperature. A biological buffer such as Tris or HEPES is chosen because it holds the pH of a living system and does not poison it. Conductivity standards are the sister articles for a conductivity meter. The ions are on PubChem. Electrode calibration practice sits with EURAMET and BELAC.
Which category should I open next?
The category is Buffers & pH solutions. The sub-category is Biological buffers (Tris, HEPES, MOPS). The catalogue is Lab chemicals.
Shelves beside this one are pH buffers & conductivity standards and Buffers (other).
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
