Omar Khalid
Plastic containers are convenient for storing items due to their durability, transparency, and apparent airtightness. However, certain items should not be stored in plastic to prevent damage, health risks, or contamination. Plastic containers may trap moisture, leading to mould or mildew growth, and they are susceptible to temperature changes, which can cause chemicals to leach into the stored contents. Therefore, it is essential to understand which items should be avoided when using plastic containers.
| Characteristics | Values |
|---|---|
| Items sensitive to changes in temperature and moisture | Electronic devices, batteries, vitamins, pharmaceuticals |
| Delicate fabrics | Silk, wool, cashmere, leather, lace |
| Important documents | Birth certificates, passports, deeds, contracts, social security cards, insurance policies, wills |
| Photographs | Family photos, artworks |
| Food | Oily, fatty, greasy, acidic, alcoholic, leftovers, pet food, raw meats, tomato sauces, curries, garlic, onions, herbs, fruits, hot food and liquids |
| Chemicals | Cleaning products, corrosive agents, flammable liquids |
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What You'll Learn
Food and drink
Plastic is widely used for storing food and drinks, but some foods are better stored in glass, ceramic, or foil containers. Plastic containers have been found to contain harmful chemicals, such as BPAs, which can leach into food and drinks, especially at higher temperatures.
Foods with a high fat or oil content should not be stored in plastic containers. This includes butter, cheese, meat, and other oily foods, which can absorb chemicals from plastic containers, especially when stored for long periods or at high temperatures. Cheese, for example, should be stored in wax paper or parchment and then wrapped in foil. Cooked meats should be placed in glass containers to preserve freshness and avoid contamination.
Acidic foods, such as tomatoes, citrus fruits, vinegar-based dressings, and tomato-based sauces, can react with the chemicals in some plastic containers. While PET containers are commonly used for storing beverages, they may not be ideal for storing highly acidic foods over a long period due to potential chemical leaching. Lemon juice, for instance, is best stored in glass bottles.
Alcoholic foods, such as those prepared with wine or spirits, should not be stored in plastic containers, especially PET containers. Alcohol can act as a solvent, breaking down plastic over time and causing harmful chemicals to leach into the food. For foods containing alcohol, stainless steel or glass containers are recommended for safe storage.
Foods with strong odors, such as garlic, onions, and fish, can be absorbed by plastic containers, particularly PP containers. These smells can be difficult to remove and may transfer to other foods stored in the same container later on. Using glass containers with airtight lids can help prevent odor absorption.
It is important to note that not all plastic containers are unsafe for food storage. Some plastics, such as polypropylene, HDPE, and LDPE, are generally considered safe and are widely used for packaging food products. However, single-use plastic containers should be used only once and disposed of properly. Plastic containers designed for the freezer or microwave should be used specifically for those purposes.
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Leather items
Leather is a natural, luxurious material that can last for many years if properly cared for and stored. However, leather items should not be stored in plastic due to several reasons. Firstly, leather is a natural material that needs to breathe. When stored in plastic, leather cannot breathe and will develop mold or mildew due to the trapped moisture and lack of ventilation. The growth of these fungi can cause the leather to become discolored, with brown or yellow stains that are difficult to remove. Additionally, the humidity that builds up in plastic containers can cause the leather to expand, warp, and lose its shape, which may be irreversible.
Secondly, the tannins in the leather, which give it its natural smell, start to break down when stored in plastic. As a result, the leather will lose its signature scent over time and develop an unpleasant musty odor from the breaking down of tannins, dyes, and mold. This smell can be incredibly off-putting and challenging to eliminate as it comes from the fibers of the leather.
Thirdly, leather is sensitive to changes in temperature and humidity. Plastic containers may not provide adequate protection against these elements, leading to potential damage to the leather. It is recommended to store leather items in a climate-controlled space, away from direct light, and at room temperature with moderate humidity levels.
Lastly, plastic bags used by dry cleaners are intended only for transportation. For long-term storage, it is best to use breathable materials such as cotton or linen dust bags, canvas storage containers, or garment bags to protect leather items from dirt, dust, and moisture. Cedar chests or closets are also recommended for storing leather items.
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Delicate fabrics
Plastic storage containers are not ideal for delicate fabrics. The plastic gives off fumes or chemicals that can cause the fabric to deteriorate over time. Plastic is also notorious for trapping moisture, especially in hot and humid conditions, which can cause mildew growth and weaken the fibres. This can lead to staining, discolouration, and even fabric and structural breakdown.
For short-term storage, plastic containers can be used, but it is important to ensure that there is adequate airflow around the containers to prevent mould growth. It is recommended to use thicker, BPA-free plastic bins made of high-density polyethylene (HDPE) or polypropylene (PP) instead of cheaper, thinner plastics. Clear plastic should be avoided as it can degrade fabrics through light exposure.
For long-term storage, it is recommended to use archival acid-free cardboard boxes with the fabric wrapped in washed muslin. Acid-free paper or cartons can also be used to protect delicate items from crushing or snagging. Window screen fabric bags made from mesh allow ventilation while obstructing insects.
Additionally, it is important to prepare the fabric before storing it. It should be thoroughly washed to remove any contaminants such as perfumes, deodorants, makeup, sweat, dust, and other particles. Fabrics should also be allowed to fully finish machine or line drying before storage to avoid trapping moisture.
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Electronics and batteries
Storing batteries in plastic containers is generally considered safe, and some sources recommend it. Plastic containers protect batteries from environmental factors such as humidity, which can cause issues. Plastic caps can also be used to cover battery terminals. However, some sources suggest that plastic bags are not ideal for battery storage. This is because loose batteries can touch and cause a short circuit.
Alkaline batteries should be used immediately and replaced every 1-2 years. Rechargeable NiMH Eneloops are a better alternative as they do not leak and can last up to 20 years. Lead-acid batteries require regular maintenance and should not be stored at a very low charge to avoid permanent crystal formation. Lithium-ion batteries should also be recharged periodically to prevent copper structures from developing and causing a short circuit.
Battery storage practices include keeping batteries in their original packaging or a battery organiser with labelled compartments. This prevents batteries from touching and causing a short circuit. It is also recommended to separate batteries by make and age, as different types can react with each other, causing leakage or damage. A dedicated storage spot, such as a kitchen or linen closet, can help prevent clutter and make it easier to know when to replace batteries.
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Important documents
Plastic containers are convenient and protective, especially against flooding, moisture, and pests. However, they are not ideal for storing important documents.
Firstly, plastic containers are not breathable, and their lack of ventilation can cause moisture build-up, which can lead to mould development. This can be mitigated by using plastic containers without lids or with vents, or by adding desiccants like silica gel packets.
Secondly, plastic containers do not protect against temperature changes, and studies have found that plastic at higher temperatures can leach chemicals, such as bisphenol A, into the items stored within.
Thirdly, plastic containers may not provide adequate protection against light exposure, which is a critical factor in preserving important documents.
Finally, plastic containers can cause static electricity, which can lift images off documents with friable media such as charcoal or pastel.
For these reasons, important documents should be stored in archival-quality materials, such as acid-free boxes or portfolios, fabric, wood, or canvas storage containers, or in a safe or safe deposit box. It is also advisable to keep back-up or digital copies of important documents.
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Frequently asked questions
Oily, fatty, and greasy foods, such as butter, cheese, and meat, should not be stored in plastic containers. This is because they can absorb chemicals from the plastic, especially when stored for long periods or at high temperatures.
Alcoholic foods, such as those prepared with wine, spirits, or extracts, should not be used with plastic containers. Alcohol can act as a solvent, causing plastic to break down over time and release harmful chemicals into the food.
Leather items, important documents, electronics, and batteries should not be stored in plastic containers. This is due to the potential for heat and moisture buildup, which can cause damage to these items.
Yes, valuables and delicate items such as photos, artwork, and certain fabrics (e.g., silk, wool, cashmere, and lace) are prone to capturing excess moisture, musty odors, and damage when stored in plastic.
Plastic containers may release harmful chemicals, especially when exposed to high temperatures. Additionally, the lack of ventilation can lead to moisture buildup, resulting in mold or mildew growth and potential damage to the stored items.
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