990 G/GS
To remove from a large working area gaseous polluting agents and/or solid particles/aerosols in a simple, efficient and cost effective way, protecting both the user and the environment. CRUMA 990 ductless fume hood uses the CRUMA filtration system. HOW DOES THE CRUMA SYSTEM WORK?
Manufactured in compliance with the main requirements and recommendations of the national and international standards: BS 7258, EN-779, AFNOR NF X 15-211(Class II), EN-141...
 "ductless fume hoods - 990 G/GS")
check-ups and validations
This inspection should really be a validation or qualification, i.e., it should be carried out in accordance with a protocol created by CRUMA (PCO 002/03 Protocol of Operational Qualification) and based on that set out in the above standards.
In Spain, these qualification operations will have to be performed by ENAC (National Accrediting Agency) -certified companies or any of its accredited offices, and authorized by CRUMA, who is responsible for advising them on the implantation of the qualification
protocol. In practice, CRUMA has its own laminar flow cabinets validation service performed by companies that are certified and have proven experience in the field.
Contact CRUMA at Telephone
+ 34 902 370 700 or by e-mail. Contact CRUMA for further information.
The protocols (PCO 00/03 and PCO 002/03) currently employed by CRUMA in validation and checkup operations are in general comprised of the following procedures:
• Visual inspection to determine state of conservation.
• Airflow rate and uniformity test.
• Filter frame case air-tightness test.
• Filter medium air- tightness test.
• Airflow distribution test (Smoke test).
• Particle count and class determination.
• Temperature.
• Relative humidity.
• Electrical test.
• Description of the work procedures performed.
• Copy of the current calibration certificates of each measurement unit used.
• Diagram of the cabinet with the coded location of sample points.
• Results obtained.
• Certificate of cabinet performance
