How to remove rust from a mate lightbulb.

Mate is more than just a beverage in South America; it is a part of a deeply rooted cultural tradition that accompanies people of all ages in their daily routines and social gatherings. However, a common problem with this custom is oxidation in the bombillas, an essential component for properly enjoying mate. This issue, besides being aesthetic, can also have health implications if not addressed promptly.

According to a scientific study published in the Journal of Iron and Steel Research International, oxidation of steel occurs due to the progressive interaction between oxygen and moisture within the metallic structure, forming a superficial layer of rust that compromises its integrity.

In simpler terms, rust appears when the iron in the metal of the bombilla comes into prolonged contact with oxygen and water, especially if they remain damp for extended periods or overnight in a container with yerba. This situation is common among those who forget to empty and clean their mate properly after use, facilitating the formation of this reddish-brown substance that can quickly deteriorate the bombilla.

The quality of the metal used in the bombilla also directly influences its oxidation. Stainless steel bombillas are less prone to rust, while those made from cheaper or lower-quality materials tend to corrode more quickly. The presence of moisture and yerba residue, combined with these inferior metals, significantly increases the risk of oxidation.

Removing rust may seem challenging, but there is an effective and simple trick that uses a readily available household ingredient: baking soda. A study published in the scientific journal Corrosion, part of the Association for Materials Protection and Performance (AMPP), stated that the presence of bicarbonate ions in aqueous solutions improves stainless steel’s resistance to localized corrosion. According to the authors, these ions favor the formation of a protective superficial layer on the metal, elevating the threshold at which oxidation begins and reducing the formation of small holes or damage on the metal surface.

Goodbye rust: How to eliminate it step by step?

1. Prepare the cleaning paste: Mix one tablespoon of baking soda with some warm water until it forms a thick, homogeneous paste.
2. Apply on the rusty bombilla: Generously place the paste on the rust-affected areas. Make sure to cover all damaged parts well.
3. Let it sit: Allow the paste to act for about 15 minutes, an essential time for the baking soda to soften the rust.
4. Remove the paste and rust: Using a small brush (preferably old and dedicated to this task) to scrub the bombilla’s surface. This process will help remove all the rust dislodged by the action of the baking soda.
5. Rinse and dry: Rinse the bombilla thoroughly with warm water to remove any residue of baking soda and rust. Dry it well with a clean towel or absorbent cloth to prevent new corrosion.

Cleaning the mate after use is just as crucial as keeping the bombilla rust-free. According to recommendations from the National Institute of Yerba Mate, it is advisable to choose bombillas made of stainless steel with removable filters, wash them after each use, and at least once a month, immerse them for 20 minutes in boiling water with two tablespoons of baking soda before rinsing and letting them air dry.

Additionally, here are some useful tips to prolong the lifespan of your mate and bombilla:

• Remove used yerba immediately: Never leave damp yerba mate in the container overnight, as this encourages mold and rust formation.
• Rinse with warm water: Clean the mate using only warm water, avoiding detergents that could alter the flavor and leave chemical residues.
• Proper drying: Air-dry the mate outdoors, preferably in a ventilated area. Otherwise, use a clean towel or absorbent paper to dry the interior.

Following these recommendations not only helps to preserve the quality of the mate and the bombilla but also ensures a safer, more hygienic, and enjoyable beverage. With simple daily habits and the effective trick of baking soda, maintaining your bombilla and mate in optimal condition will be simple and economical.