The identification of PC water buckets follows a series of standards explicitly defined by the quality inspection authorities. According to the instructions of the State Administration for Market Regulation, bottled water manufacturers must use PC buckets (polycarbonate buckets), while PET buckets (polyethylene terephthalate buckets) are strictly prohibited due to the potential release of toxic substances upon heating.

Currently, there is a high demand for bottled pure water buckets. During frequent purchases and replacements, have you noticed the letter code identification on the bottom of the bucket? It is understood that most PET material pure water buckets have been withdrawn from the market in our city. If consumers find that the pure water buckets they use at home are made of PET material, they have the right to request the manufacturer to replace them with PC material buckets.

So, how to distinguish between PET and PC material pure water buckets? Chen Mu, a staff member of the Municipal Quality Inspection Bureau, suggested that the distinction can be made from both the bottom and the body of the bucket. Specifically, the bottom of a PET bucket will be marked with PET, while the raised part of its body is relatively smooth; in contrast, the bottom of a PC bucket will clearly indicate PC, and its raised parts have small pits.

In addition, Chen Mu also revealed that the water buckets currently used by bottled drinking water companies in our city are all made of PC material, and PET buckets have all been required to be withdrawn from the market. To ensure that consumers can use safe buckets, the municipal quality inspection department conducted a special inspection of several large water plants in the urban area around mid-June, confirming that no PET buckets were found.

Polycarbonate (PC) is a colorless, transparent, amorphous thermoplastic material with non-crystalline characteristics. This material is widely used in the field of pure water buckets and is highly regarded for its excellent properties.

1. PC material has excellent strength and elastic modulus.
   It also has high impact strength and a wide range of operating temperatures.
2. Pure water buckets use highly transparent and freely dyed PC material.
   Beautiful and practical.
3. PC has a high H.D.T. (heat deflection temperature).
   Ensures stability even in high-temperature environments.
4. Excellent fatigue resistance allows PC material to maintain its performance even after long-term use.
5. Good weather resistance, unaffected by climatic conditions, maintaining long-term stability.
6. Good electrical properties, suitable for the electronics and electrical appliance field.
7. Tasteless and odorless, meets hygiene and safety standards, and is harmless to the human body.
8. Low molding shrinkage rate, good dimensional stability, ensuring product quality.

Disadvantages:
Improper design may lead to internal stress problems.

Application areas:
In electronics and electrical appliances, such as CDs, switches, appliance casings, signal horns, and telephones, etc.