A laboratory is usually small, but it produces two kinds of hazardous waste at once: medical waste from samples and consumables, and chemical waste from reagents, solutions and solvents. That is why the environmental requirements for medical and analytical labs, and for quality labs inside factories, focus above all on waste and hazardous materials management. This article explains the legal framework, what must be controlled inside the lab, and the most common mistakes.
The legal framework
- Waste Management Law: defines hazardous waste as including toxic, flammable, reactive or corrosive materials, solvents, acids and alkalis; requires waste producers to store waste in designated places and sort it; and allows waste management activities only by parties licensed by the National Center for Waste Management (MWAN).
- MWAN collection and transport conditions: collection and transport of medical waste, and of chemical waste, are hazardous waste sub-activities that only licensed parties may carry out.
- Environmental Permits Regulation: the National Center for Environmental Compliance (NCEC) decides whether the lab needs a permit and its category after reviewing the classification form, according to its size, activity and location.
- Water Media Regulation and Penalties Regulation: dumping or discharging untreated liquid components into any environmental medium is among the violations heard by the competent court.
What must be controlled inside the lab
- Segregation at source: medical, chemical, sharps and general waste, each in a dedicated, labeled container where it is generated.
- Sharps: in puncture-resistant containers.
- Reagents and solutions: collected in compatible, labeled containers, never poured into sinks.
- Chemical storage: by compatibility, with a safety data sheet for each material, acids separated from bases and oxidizers from flammables.
- Temporary waste storage: a dedicated, closed and secure area away from work and food areas until collection.
- Handover: to an MWAN-licensed carrier for each waste type, with a transport document for every shipment.
- Records: quantities of each type, collection dates and the receiving party.
Solvents and refrigeration in the lab
Analytical labs use volatile organic solvents, and the Air Quality Regulation sets storage requirements, including a ban on storing solvents in aluminum and magnesium alloys and acceptance of plastic containers resistant to their contents. Lab fridges and freezers contain gases regulated by the Ozone-Depleting Substances Regulation, so they are serviced by a licensed party that recovers the gas rather than venting it.
Liability does not pass to an unlicensed carrier
The Waste Management Law states that anyone who deposits waste with an unlicensed person is jointly liable with them for damages and compensation, and a carrier unable to deliver waste to its approved destination must return it to the producer. The lab's responsibility therefore continues until the waste reaches a licensed facility, so check each carrier's license and scope before contracting.
Common mistakes in labs
- Pouring "diluted" solutions down the sink.
- Mixing medical with general waste to save costs.
- Expired chemicals accumulating in cabinets for years.
- Contracting a carrier licensed only for medical waste and handing it chemical waste outside its scope.
- No record of waste quantities and collection dates.
Labs inside factories and hospitals
A factory quality lab or a hospital lab is part of the parent facility's environmental file; its waste belongs in the waste management plan, self-monitoring reports and environmental audit, and must not be managed as if it were outside the facility.
Frequently Asked Questions about Laboratory Waste
Can diluted solutions be poured down the sink?
This is not advisable; reagents and solutions are collected and handed to a licensed carrier, and discharging untreated liquid components into any environmental medium is a serious violation.
Does a laboratory need an environmental permit?
NCEC decides after classification according to the lab's size and activity, but managing hazardous waste through a licensed carrier is an obligation in every case.
How do I dispose of expired chemicals?
Treat them as hazardous waste and hand them to a carrier licensed for that type with a transport document; never leave them in cabinets or pour them away.
Can the medical waste carrier take chemical waste too?
Only if its license covers that type. Check each carrier's license scope before handing over waste.
How Abak Green helps
We prepare your lab's medical and chemical waste management plan, set up segregation and record templates, review chemical storage, verify carrier licenses, and determine whether the lab needs an environmental permit and manage the file. Contact us about your laboratory.
