What do single and double chlorination mean?

What is glove chlorination?

Chlorination is a common manufacturing process used to make disposable gloves (particularly latex and nitrile) easier to put on and take off without the use of powder.

During this process, the gloves are exposed to chlorine gas or a liquid chlorine solution. This chemical reaction alters the surface of the polymer, slightly hardening it and reducing its natural tackiness (stickiness). The result is a much smoother, slicker finish that glides easily over the skin.

What does single chlorination mean?

Single chlorination means the glove has been treated with chlorine on only one side – specifically, the inside of the glove that touches your hand.

Treating only the inside ensures the interior is smooth for easy donning and doffing, even if your hands are slightly damp. Meanwhile, the outside of the glove remains untreated, retaining the rubber’s natural tackiness. This provides the user with an excellent, secure grip, which is highly beneficial when handling wet objects, smooth tools, or delicate glass instruments.

What does double chlorination mean?

Double chlorination means the glove has been treated with chlorine on both the inside and the outside.

Treating both surfaces creates a glove that is completely smooth inside and out. The primary benefit of this is for “double-gloving” (wearing two pairs of gloves at once for extra barrier protection). The slick exterior of the first glove allows the second glove to slide right over it without catching, stretching, or tearing. However, because the outside is hardened, double-chlorinated gloves generally offer less surface grip than single-chlorinated options.

Does the chlorination process affect glove performance?

Aside from altering the texture, chlorination changes a few other physical properties of the glove.

• Reduced Allergy Risk: For natural rubber latex gloves, the chlorination wash breaks down and strips away a significant amount of the extractable latex proteins, drastically lowering the risk of a Type I latex allergy reaction.
• Color and Odor: Chlorination can cause latex to take on a slightly yellowish tint and may leave a faint, residual chlorine odor when the box is first opened.
• Shelf Life: The hardening effect of the chlorine can make the material slightly more brittle over a long period, sometimes resulting in a slightly shorter shelf life compared to unchlorinated polymer-coated gloves.

How should you choose between single and double chlorinated gloves?

Your choice depends entirely on your daily tasks.

If you work in a laboratory, automotive shop, or food processing facility where a strong, tactile grip on tools or wet items is critical, single chlorinated gloves are the better option. If you work in surgery, pharmaceutical compounding, or a high-risk cleanroom where double-gloving is a strict safety protocol, double chlorinated gloves are necessary to ensure your PPE can be layered safely and easily.