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Large volumes of a large variety of chemical and sanitary waste are produced at the university. This implies a hazard and that is why laboratory waste must be properly managed.
It should be noted that each user is responsible for the waste which they produce, and that the Health and Safety and the Environment Service centralises the management, merely acting as an intermediary between users and external waste managers.
Laboratory technicians as well as professors, researchers, students, and in general all those involved in the production of hazardous and sanitary waste must participate and collaborate for a correct management of laboratory waste.


Types of waste included in this service

This service includes the following 19 groups of laboratory waste. Please do not mix different types of waste even if they belong to the same laboratory waste group.




group 1

Obsolete laboratory reagents

Obsolete laboratory reagents

group 2

Non-halogenated solvents 

Alcohols, toluene, xylene, dimethylformamide, acetone, ethyl acetate, cyclohexanone, ether, formaldehyde solutions, etc. 

group 3

Halogenated solvents

Chloroform , chlorobenzene, any other solvents containing fluorine, chlorine, bromine or iodine.

group 4

Inorganic acids and acid solutions with metals 

Acidic solutions with or without metals are included, except chromium (VI) and heavy metals solutions.

group 5

Organic compounds 

Organic acids such as acetic acid, oxalic acid; peroxides including hydrogen peroxide, etc.

group 6

Alkalis and inorganic salts 

Both alkali and inorganic salts, except the most hazardous (unstable compounds, highly oxidizing, etc.)

group 7

Oil, grease, hydrocarbon and fuel

Oil, grease, hydrocarbon and fuel

group 8


Herbicides , insecticides , fungicides, etc.

group 9

Phenols and phenolic compounds

Phenols and phenolic compounds

group 10

Mercury, chromium (Vi) and other heavy metals salts and compounds

Compounds containing mercury, Cr (VI) and any other heavy metals

group 11

Cyano compounds

Cyano compounds

group 12

Contaminated laboratory equipment

Contaminated materials such as gloves, pipette tips, etc. 

group 13

Highly hazardous 

Nanotechnology, explosives, highly toxic compounds, etc. with their safety data sheet

grupo 14

Waste from COD determination

Waste from COD determination

group 15*

Cytotoxic waste

Ethidium bromide gels, diaminobenzidine, acrylamide

group 16*

Biosanitary and biological waste

Petri dish cultures, tools contaminated with biological materials, liquid extracts, anatomical waste, needles and sharps materials

group 17

Photographic liquids

Photographic liquids

group 18



group 19

Empty packages and Pyrex glass

Empty plastic, Pyrex glass and metal packages previously containing reagents, laboratory glassware, vials

*Waste groups 15 and 16, called sanitary waste, are managed differently from the rest of groups. 


Special features of sanitary waste

Sanitary waste includes the following groups:

  • GROUP 15: Cytotoxic waste: intercalating agents such as ethidium bromide, diaminobenzidine (DAB) and other substances wich break the DNA.
  • GROUP 16: biological and biomedical waste: microbiological and animal remains, needles and scalpels contaminated by possible infectious substances.

This waste does not follow the same schedule as the other groups, but are collected weekly, as indicated in the related section.


Laboratory glass

It will always be considered as group 19 laboratory waste, because it is generally borosilicated glass (Pyrex glass), which cannot be recycled with the normal glass, and/or it may contain traces of chemicals, which makes it more dangerous.

vidre laboratori














It is important to note that empty laboratory reagents packages must be deposited in containers WITHOUT HAVING BEEN BROKEN previously.

As for vials, which are so small, a large proportion of reagents may remain inside them, so they should be treated separately from the rest of glass and labelled as group 19 laboratory waste with the following description: “Contaminated glass vials.”

Rules to follow

Following the instructions in this section makes easier and faster the management of hazardous waste. Waste which does not meet these rules cannot be collected.


Firstly, it is important that producers understand what substances can be mixed. Our advice is to avoid all unnecessary mixtures. If not possible, before mixing you should check any possible incompatibilities among different chemicals in their safety data sheets.
Safety data sheets must be provided for free by the companies who sell dangerous chemicals. You can also check on

Waste packaging must meet several requirements:

  • hermetic closing to prevent any loss of contents,
  • with no cracks or deformations,
  • external surface of the container should be dry and clean,
  • material: the service provides some plastic containers suitable for most types of waste.

envases de residuos

For transporting and handling, waste manager companies cannot accept waste in glass bottles for its fragility and consequent risk. Neither is solid waste in plastic bags allowed.
If the waste container is not in acceptable condition, the producer must transfer the contents into a suitable container wich we can provide.


Producers must request the packaging needed for the waste which they expect to generate. We usually supply the same number and type of packages which are taken away, but if you need more, you can include this information along with the collection request.
For ergonomic reasons, no over 10 L containers for liquids will be provided in order to avoid problems derived from excessive weight carrying.


To make classification of waste easier and faster, adhesive colour labels have been made, each of them for one different group.
All fields of the label must be filled out.
The most important thing is that the label should list the components of the waste, especially those which make it hazardous. Avoid generic names (solvents, acids, etc.)

As for sanitary waste the labelling is:

  • Group 15: label 'cytotoxic ' + barcode label R.CITO.GIV
  • Group 16: label 'risk waste' + barcode label R.SAN.GIII

Users must request the appropriate labels for the waste produced. These labels will be provided at the time of collection and if needed they can be sent by internal mail as well. As a last resort they can also be downloaded from the download files section of this website and printed.

We advise users to attach the labels to the containers before filling them, so that all the members of the laboratory staff could identify at a glance the place where each type of waste should be discarded.

Collection request

To request collection it should be forwarded to the Health and Safety and the Environment Service the collection request table, as detailed in the instructions for users, except for the users of the waste warehouse in Burjassot, which will follow the instructions for the waste warehouse users.


Once packaged and labelled, waste should be stored in a place safe for people and the environment until it is collected.
If the laboratory is in the oldest area of the Burjassot campus, waste should be brought to the waste warehouse. A technician there will weigh, place and store the containers.


Typs of packaging

Containers for liquid waste 

Garrafes de 10 i 5L amb tancament hermètic.
10L and 5L hermetic closing containers
Once full, containers with cytotoxic liquids must be closed and deposited in 30L blue containers for solids.

30L cytotoxic container for solids

    Garrafa de citotòxics blau

Containers for solid waste

Solid chemicals (for all waste groups except 15 and 16)

Contenidors grocs de 60Lred 30L
60L and 30L red Containers 

Cytotoxic waste (group 15)
Contenidors blaus de 60 i 30L blue 30L
60L and 30L Blue containers

Sanitary and biological waste (group 16)

 Contenidors negres de 60 L     Contenidor negre de 30L

60L green container and 30L black container

Needles and sharp objects (both 15 and 16 groups)
Contenidors grocs de 5 i 10 litres
5L and 10L Yellow containers


Instructions for waste collection service users 


These rules apply to all the centres of the University, except the users of the waste warehouse at the Burjassot campus.

The procedure to follow is schematically detailed below:

1. Download the sanitary or chemical request table according to the residues involved, and fill out every field (and optionally weight at this point). Pay special attention to the description of the waste and packaging. Use one row per container.

2. Send the collection request table to before 1:00 pm of the preceding day, including the amount of labels and empty containers which you will require.

3. Waste collection will take place as previously scheduled in the annual calendar.In case of need (missing data, collection date change), the Health and Safety and the Environment Service (SPMA) will notify the changes replying to the email.

4.Carry the waste to the place of collection on the appointed day.

5. Weigh each container and give them to the SPMA staff.

Pickup and container supply sites

- Pharmacy: residues collection at the parking lot 56. Containers are stored in the room 17A within the parking.

- Instituts de Paterna: collection of residues and container storage in the loading area.

- ETSE: collection of residues and container supply at the cage by the parking barriers entrance.

- I2SysBio: collection of residues and container supply in the parking, by the cage between the access door to the phytotron and the maintenance door of the external company.


Instructions to deposit hazardous waste in the waste warehouse in Burjassot

almacen de residuos peligrosos en Burjassot

Users at the Burjassot campus must follow the instructions below.

A. Delivery in the warehouse on Wednesdays from 09:00 am to 11:00 am.

  • One person per laboratory group will bring the waste to the warehouse, except if the weight or volume of waste is high.

  • The users and the SPMA technician will check that waste has been properly packaged and labelled.
  • Containers are weighed and weight and all the important information included in the label (contents, laboratory of origin and contact person) are registered.
  • The SPMA technician will provide the packaging and labels needed.

            B. Collection using an electric car to carry large quantities (over 100 kg) on Wednesdays from 11:30 am to 01:00 pm.

  • Laboratories requiring this door-to-door service should dial the extension 93303 before 11:00 am.
  • The SPMA technician driving the electric car will arrive at the building.
  • The laboratory staff will help the SPMA technician to load the containers into the car.
  • Once in the warehouse it will be followed the procedure in the section above (A) from the second item on.

If you do not have a suitable cart to carry the waste containers to the warehouse, you can borrow this one from the warehouse:

carro residuos laboratorio



Download files

CHEMICAL request tableCHEMICAL waste collection table

SANITARY request tableSANITARY waste collection table

collection calendarCollection calendar

Labels for hazardous waste

Compatibilities for mixtures table

Poster for labs about waste management available in paper