Description
LABOCAP caps without handle in yellow are metal closures intended for glass culture tubes with an outer diameter of 15/16 mm. Made from chrome-nickel steel, they offer a robust, reusable finish for everyday sealing of culture vials and related laboratory glassware. The handle-free profile keeps the cap compact for racks, incubators and storage boxes while still seating securely on matching glass tubes. Supplied in packs of 100 pieces from manufacturer ROTH SELECTION, each unit set has a stated weight of 0,45 kg, supporting efficient stock planning in busy laboratories. Yellow colour coding helps teams separate media types, sample series or process stages at a glance during microbiology, molecular biology and cell-culture work. These accessories sit within standard culture-vial workflows and fit the widely used 15/16 mm glass tube format without changing established glassware dimensions. Chrome-nickel steel construction withstands routine handling, cleaning cycles and repeated opening and closing in research, teaching and quality-control environments. As dedicated labware accessories for culture vials, the yellow LABOCAP caps without handle provide a simple, colour-coded option for organised tube management across parallel incubations and sample holding tasks.
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: yellow
- Material: chrome-nickel steel
- For glass tubes: Ø 15/16 mm
- Weight: 0,45 kg
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Questions about LABOCAP-caps without handle, yellow, chrome-nikkel steel, f. glass. Ø 15/16mm
What is this article?
LABOCAP-caps without handle, yellow, chrome-nikkel steel, f. glass. Ø 15/16mm 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. Articles in stock ship within 2–5 business days. 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.

