Disposing of laboratory waste and sharps from a small lab in Greece

How does a small research lab in Greece lawfully dispose of expired vials, solvents and sharps?

A small laboratory in Greece does not put its waste in the ordinary bin or down the drain. It first classifies each stream as hazardous or non-hazardous, then separates it at source, and finally hands it to a licensed collector against a document. Anything it cannot classify it treats as hazardous until the opposite is documented.

The article follows that order: classification, the streams of a small lab, the Greek institutional framework, collectors and the electronic registry, the sharps container, and the records you keep. It does not replace advice from your collector and the competent authorities, because the obligations depend on the type and quantity of waste.

What counts as waste, and as hazardous waste

Directive 2008/98/EC defines waste as any substance or object which the holder discards or intends or is required to discard ^[1]. An expired vial, a used filter and a solvent residue become waste the moment you decide not to use them again. The Directive also sets the management hierarchy: prevention first, then reuse, recycling and other recovery, and disposal only last ^[1].

Hazardous waste is waste that displays one or more hazardous properties, such as toxicity, corrosivity, flammability or ecotoxicity ^[1]. In European and Greek practice each waste receives a six-digit code from the European List of Waste, and codes marked with an asterisk are the hazardous ones. For example, laboratory chemicals consisting of or containing hazardous substances fall into the relevant asterisked category. You confirm the code for each stream with the collector and from the material's safety data sheet, not from memory.

The streams of a small laboratory

A small research lab produces few streams, but each calls for different handling. Confusion arises when they all end up in the same bag.

Expired vials need particular care, because the temptation is to empty or rinse them so they can leave as «empty» glass. Do not. The contents and the packaging go together, closed and labelled, and the collector decides how they are processed. Until collection, expired material is quarantined: a separate shelf or container, a clear «out of use» marking and an entry in the records, so it is not used by mistake in later work.

Solvents need separation by category, because some combinations react with each other and because the collector usually prices and processes halogenated ones separately. Each container carries a label with its contents, the start date and the hazard symbols from the safety data sheet. It stays closed when not being filled and is kept in secondary containment, away from heat sources.

The Greek institutional framework

The Directive has been transposed into Greek law, and the National Waste Management Plan sets targets and streams, with ΕΟΑΝ publishing the legislative framework ^[3][4]. The individual laws and decisions change, so current validity is read from the ΕΟΑΝ legislation pages rather than from secondary guides. The essential point for a small producer is that responsibility for the waste stays with the producer until it is handed to a body entitled to receive it.

The World Health Organization has published a guide to the safe management of wastes from health-care activities ^[2]. A research laboratory is not a health-care facility, but the guide is a useful frame for segregation at source, labelling and sharps management, and it is cited here as international good-practice reference, not as a Greek obligation.

Licensed collectors and the Electronic Waste Registry

Hazardous waste is handed to a collection and transport operator holding the relevant licence, and the operator takes it to a treatment or disposal facility that is also licensed. The producer's check before signing a contract is simple: ask for a copy of the collector's current licence, with the waste codes it covers, and confirm that the codes of your own streams are included.

In Greece waste tracking runs through the Electronic Waste Registry (ΗΜΑ), where producers, collectors and transfers are recorded. Whether and how a particular laboratory registers, and which entries are made by you and which by the collector, depends on the type and quantity of waste; ask the collector in writing and confirm it from the official ΕΟΑΝ and ministry pages ^[3][4].

The sharps container

The sharps container follows a few simple rules, drawn from international practice ^[2]. It is resistant to puncture and leakage, has a secure closure and a narrow opening, and sits within reach of the point of use so that sharps are not carried by hand. It is not filled past the fill line, is not reopened once permanently closed, and carries a label with its start and fill dates.

• A puncture-resistant container with a secure closure and a fill line.
• Placed at the point of use, on a stable base and at a height that prevents it falling.
• No re-sheathing of needles by hand and no carrying of sharps in an open container.
• A label with start date, closing date and the person responsible.
• Handed to the collector closed, never emptied or compacted.

Contract, documents and records

The contract with the collector states which streams it takes, how often, in what containers and at what charge. Each collection leaves a document, such as a consignment or waste identification form, and you keep your copy together with the final disposal certificate where one is issued. Without these you cannot show that the waste arrived where it should, and the producer's responsibility has not ended.

Your own waste register adds your side: what was disposed of, when, how much, under which code and with which lot number the material carried. Disposing of an expired vial closes the lot's life cycle, and how it links to the other documents is explained in documentation and batch traceability. For laboratory record-keeping in general and the difference between expiry and retest, see the related articles.