Nitrile gloves in the laboratory, and the chemical resistance they do not have
Nitrile is the right laboratory default, and it is routinely credited with solvent resistance it does not have. What the breakthrough data actually shows.
Nitrile is the right default glove for laboratory work. It is also routinely credited with chemical resistance it does not have, including in an earlier version of this article, which stated that nitrile gloves protect against acids, bases and organic solvents. That is wrong, and in a laboratory it is the kind of wrong that matters.
Start with what a disposable glove is for
A single-use nitrile examination glove is a barrier against incidental contact and splash. It is not chemical protective equipment in the sense that a solvent-handling task requires.
The distinction is formal. Chemical protection is classified under EN ISO 374 as Type A, B or C, based on permeation breakthrough times against named test chemicals, expressed as performance levels:
A glove is Type A if it reaches at least level 2 against at least six of the eighteen test chemicals; Type B against at least three; Type C at least level 1 against one. Note what level 1 means in practice: breakthrough after ten minutes. A Type C marking is a splash-protection claim, not a handling claim.
Where nitrile is strong
Against aqueous chemicals, nitrile performs very well. Representative breakthrough data from our own product testing:
Bases, dilute acids, peroxides and aldehydes are well covered. So are oils, greases and fuels, which is what NBR was originally developed for.
Where nitrile fails, and fails quickly
Organic solvents are the problem. Data from the sterile glove range we distribute, tested to EN 16523-1:
Concentrated acids are also weak: nitric acid at 65 % breaks through a thin examination film in minutes, and sulfuric acid at 96 % is level 1 even on a heavier glove.
Two consequences for laboratory practice:
DMSO deserves specific attention. It permeates rapidly and is a carrier – it transports dissolved solutes through skin. A ten-minute breakthrough on DMSO is not a ten-minute exposure to DMSO; it is a ten-minute countdown on whatever is dissolved in it.
Ethanol is not a non-event. 70 % ethanol is everywhere in a laboratory and is classified as splash protection only. The glove should be changed after contact rather than wiped.
What to do instead
What nitrile is genuinely good at in a laboratory
With the chemical limits understood, the case for nitrile as the laboratory default is strong:
Our nitrile examination gloves are certified to EN 455 and EN ISO 374, with full breakthrough data available per product, and the long-cuff version extends forearm coverage for decontamination work.
Key takeaways
Seventeen years sourcing and supplying medical gloves and PPE to governments, UN agencies, NGOs and healthcare systems. Writes on glove standards, quality management and responsible sourcing for institutional buyers, working from the source standards rather than secondary summaries.
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