Description
LABOCAP-caps without handle, green, are chrome-nickel steel closures made for glass culture vessels with a diameter of 17/18 mm. The handle-free design keeps the cap profile low and unobtrusive, which is useful when many vials share a rack, incubator shelf or transport box. Green colour coding supports rapid visual distinction between sample groups, media types or experimental arms in microbiology, molecular biology and cell-culture laboratories. Each pack contains 100 pieces and weighs 0,500 kg, providing a practical stock quantity for busy culture facilities and teaching labs. These LABOCAP accessories from manufacturer ROTH SELECTION match glassware in the 17/18 mm range and slot into established culture-vial systems without special adapters. Durable metal construction withstands everyday handling on the bench, while the green finish helps maintain clear organisation when several parallel cultures are processed side by side. Suitable as replacement or supplementary caps for culture vials and related glass containers, they contribute to tidy, colour-managed workflows from setup through incubation and subsequent analysis.
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: green
- Material: chrome-nickel steel
- Fits glass Ø: 17/18 mm
- Weight: 0,500 kg
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Questions about LABOCAP-caps without handle, green, chrome-nikkel steel, f. glass. Ø 17/18mm
What is this article?
LABOCAP-caps without handle, green, 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. 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.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

