Recycling symbols in Singapore confuse almost everyone, and that is not your fault. Flip over a yoghurt tub or a takeaway container and you will spot a little triangle of arrows with a number inside, plus a scatter of logos and words that seem to promise something. The catch is that most of these marks were never designed to tell you whether your local blue bin will accept the item. Learning to read them, and knowing their limits, saves you from the two classic mistakes: binning good recyclables and contaminating the bin with things that cannot be processed.
This guide walks through what the symbols actually mean, what the numbers one to seven stand for, why a symbol is not a promise, and how to sort with confidence at home. When the label and the local rules disagree, NEA’s current guidance wins.
What the Recycling Symbols Actually Mean
The most common mark is the chasing-arrows triangle. When it has a number inside, it is not really a recycling instruction at all. It is a resin identification code, a system that tells manufacturers and recyclers which type of plastic the item is made from. It says nothing about whether that plastic is collected or recycled where you live.
The other familiar mark is the Mobius loop, three arrows chasing each other with no number inside. This means the product can technically be recycled, but again, not that your local system accepts it. You will also see a “please recycle” or “widely recyclable” message on some packaging, which is a nudge from the brand rather than a guarantee for Singapore’s blue bin. The single most useful habit is to read these symbols as information about the material, then check the local rules separately.
The Resin Codes: Numbers One to Seven
Every numbered triangle points to a plastic family. Some are commonly recycled, while others rarely are. Here is a plain-language guide to the seven codes and where you tend to find them.
| Code | Plastic type | Common examples |
|---|---|---|
| 1 PET | Polyethylene terephthalate | Drink bottles, clear food trays |
| 2 HDPE | High-density polyethylene | Milk bottles, shampoo, detergent bottles |
| 3 PVC | Polyvinyl chloride | Pipes, some blister packs, cling film |
| 4 LDPE | Low-density polyethylene | Plastic bags, squeezable bottles, film |
| 5 PP | Polypropylene | Yoghurt tubs, bottle caps, takeaway boxes |
| 6 PS | Polystyrene | Foam boxes, disposable cups and cutlery |
| 7 Other | Mixed or other plastics | Multi-layer packaging, some tableware |
In practice, rigid bottles and containers coded 1 and 2 are the most reliably recycled, and clean 5 items are often accepted too. Codes 3, 6 and 7 are much harder to recycle, and foam polystyrene coded 6 is generally not accepted. Because acceptance can shift, treat this table as a starting point and confirm against NEA’s current list before you sort.
Why a Symbol Does Not Guarantee Recyclability
This is the part that surprises people. A resin code only identifies the plastic, so a number on the base does not mean the item will actually be recycled here. Whether something is recycled depends on three things working together: the local system collects that material, a facility can process it, and the item is clean enough to be worth handling.
An item can carry a triangle and still be the wrong answer for the blue bin. A greasy foam container coded 6, a multi-layer pouch coded 7, or a bottle still half full of liquid all cause problems at the sorting plant, symbol or not. The chasing arrows are a description of the material, never a permission slip. When the packaging and the local rules seem to disagree, follow the local rules and, if in doubt, leave it out so you do not contaminate the batch.
Reading Labels Beyond the Triangle
Packaging carries plenty of other marks worth understanding. A few you will meet often:
- The Green Dot. Two interlocking arrows in a circle. It means the producer paid into a packaging recovery scheme, mostly in Europe, and says nothing about whether you can recycle the item in Singapore.
- Tidyman. A figure putting rubbish in a bin. This is simply a reminder to dispose of litter responsibly, not a recycling claim.
- “Widely recyclable” or “check locally.” Honest labels that hand the decision back to you and your local system, which is exactly the right instinct.
- Compostable or biodegradable marks. These plastics are not the same as recyclable ones and can contaminate a recycling batch, so keep them out of the blue bin.
The lesson across all of them is the same. Labels describe intentions and materials, while your blue bin is governed by what Singapore can actually collect and process today.
How to Sort With Confidence at Home
You do not need to memorise every symbol. A short routine covers almost everything you will meet:
- Empty and rinse. Tip out food and liquid, then give the container a quick rinse. Clean items keep the whole bin usable in our humidity.
- Check rigid versus soft. Rigid bottles and containers usually belong in the blue bin, while scrunchable films usually do not.
- Glance at the number for a clue. Codes 1, 2 and clean 5 are your safest bets, but the number is a hint, not the final word.
- When in doubt, leave it out. One wrong item is easier to skip than to fix later, and it protects everything else in the bin.
- Verify special items. Batteries, bulbs, foam and e-waste have their own channels, so never force them into commingled recycling.
Keep it light. No one gets every symbol right, and the aim is steady progress, not a perfect score. Recycling well is really about a few clean habits repeated often, and that is something every HDB or condo household can manage without turning bin day into a chemistry lesson.
Explore more
Symbols make more sense once you know what the system loves and hates. See which materials belong in the blue bin with our guide to recycling glass, metal and paper in Singapore, and learn why films cause chaos in soft plastics and what you cannot recycle. If you would rather earn rewards for clean bottles and cans, try reverse vending machines.