IRSST - Institut de recherche Robert-Sauvé en santé et en sécurité du travail

 Important Notice Concerning COVID-19

(March 27, 2020 3PM) Due to the rapid spread of COVID-19, and to ensure the health and safety of its employees and its entire network, the IRSST has implemented exceptional measures.

CQ Fibres
Fiber Counting Quality Control

Since 1992, the IRSST has had a quality control program for fibre counting with samples originating from different Québec workplaces. According to the requirements of the official counting method, fibre counters must participate in an interlaboratory exchange program using samples that are representative of their industrial activities, thus allowing their efficiency to be verified. Every three months, the participating analysts receive four samples. After three successful consecutive exchanges, based on specific criteria, they receive a certificate confirming their efficiency. This remains in force as long as they participate in the program and meet these criteria. The list of recognized companies and counters available on the IRSST’s website is updated after each CQ Fibres’ round.

Important dates

For purposes of continuous improvement of our CQ Fibres Fiber Counting Quality Control program, the IRSST has organized the shipping of slides by dividing the participants into two groups. The groups have been randomly created to obtain a similar number of counters in each group. Since 2012, companies participate in CQ Fibres in a predetermined group. Note that a counter cannot participate in a round of the other group and that a company cannot change groups.

Group A

Serial number

2020-1

2020-2

2020-3

2020-4

Deadline to add a new counter 2020-01-06 2020-04-03 2020-07-06 2020-10-05
Samples shipment 2020-01-16 2020-04-15 2020-07-15 2020-10-14
Deadline to submit results online 2020-02-17 2020-05-15 2020-08-17 2020-11-16
Reports available 2020-03-16 2020-06-15 2020-09-14 2020-12-14

Group B

Serial number

2020-1

2020-2

2020-3

2020-4

Deadline to add a new counter

2020-02-13

2020-05-13

2020-08-12

2020-11-09

Samples shipment

2020-02-24

2020-05-25

2020-08-24

2020-11-23

Deadline to submit results online

2020-03-27

2020-06-25

2020-09-25

2020-12-23

Reports available

2020-04-24

2020-07-24

2020-10-26

2021-01-25

Any new requests to add a company, branch or counter must be received by the IRSST before the date of deadline to add a new counter at the beginning of the round. No additions may be made while a round is in progress.

Address

The CQ Fibres Team
Direction des laboratoires (Laboratory Division)
IRSST
505, De Maisonneuve Blvd. West,
12th floor
Montréal (Quebec) H3A 3C2

Recognized counters and companies

The IRSST website lists laboratories with counters recognized by the IRSST program. The list of counters is updated at the conclusion of each round, allowing you and your clients to verify the status of fiber counting analysts.

Laboratories and counters list

CQ Fibres - Log in

About CQ Fibres

Administration Program (PDF)

CQ Fibres Registration

Companies or counters who want to register for Fibre Counting Quality Control must contact the IRSST at before filling in and sending the registration form in order to ensure that a place is available.

Registration forms

For more information
  • Silvia Puscasu

    • Program Supervisor
      M.Sc. Chemistry, Certificate in Analytical Chemistry, B.Sc. Chemistry
      Laboratory Division
      Phone: 514 288IRSST-1551 ext. 304
      Fax : 514 288IRSST-9632
      Email :
  • Louise Racine

  • Jacinthe Boisvert