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Procedure for use of fume hoods and point suctions

The procedure should ensure that fume hoods and point suction are used correctly.

This procedure applies to all activity at IBV, including research and educations purposes, where chemicals are used.


Head of Department should ensure that there are sufficient fume hoods and that all fume hoods work according to regulation.
Estate management (EA) is responsible for maintenance and repair. EA is responsible for control of airflow.
Sections er responsible for check of airflow and alarm in the fume hoods.
Users are responsible to follow procedure and use the fume hood correctly.


General rules

  1. Maximum sash opening is indicated
  2. Always use as low sash opening as possible.
  3. Avoid large set-ups. This disrupts the ventilation flow
  4. Place set-up as close as possible to the back - never along side of the cabinet
  5. Keep cabinet clean and tidy
  6. Do not use for storage
  7. Use suitable clothing
  8. If failure is detected, stop working immediately. “Out of order” sign is placed and responsible person is contacted.

Fume hoods from 1970's; updated in 1990's

Bildet kan inneholde: veggplate, teknologi, elektronisk apparat. Switch (C)

Control the alarm by pushing the lamp test button for 3-4 sec. The lamp should be lit, if not notify!


Before use turn switch to max position.
After use turn switch to min position.

Bildet kan inneholde: vindu, av, displayetui, glass, rom. Lamp (A) Red flashing light:
- when switching on: indictes test of ventilation
- when in use: indicates too low airflow or indicates too high sash position – CLOSE SASH. Notify lab!


Indicates maximum sash opening for optimal use.

Fume hoods from Labflex

All LABFLEX Fume hoods are controlled by LAB-VENT control panel (see figure below).  These fume hoods have automatic control of airflow and sash opening.

Drift The fume hood CAN NOT be switched off.
Green light: correct air flow.
Max Yellow light: Maximum flow regardless of sash position.

Red flash + sound: Indicates too low airflow or too high sash position.
Red light + sound: Red light glows contantly, sound every 30 secs; power failure - CLOSE SASH
Muting alarm: press alarm button. The alarm will still bed active if problem is not solved.

Fume hoods from Kilab

All Kilab fume hoods have a Phoenix control panel

Standard operation (B) Indicates standard face velocity or flow.
Reduced function (C) Indicates lower face velocity or flow (active only with a ZPS)
Flow alarm (D) Indicates unsafe airflow conditions.
Mute alarm (E) Press button to mute. (D) will still be lit until airflow has been stabilised.
Emegency exhaust (F)

Press to activate the emergency exhaust mode.
The alarm will sound and the Emergency Exhaust light  will flash. In this mode, exhaust air is at its maximum flow. Press button again to switch off.


How to understand and use the control panels is described in the posters below. 

Fume hoods anno 1971- 1990

Fume Hood Kilab

Fume hood Labflex


Use of point suction

A point suction should be use if the work cannot be performed in the fume hood. A point suction should only be used for small amounts of hazardous chemicals.

A point suction cannot replace a fume hood. If you need to use a point suction for a prolonged time period, wearing a suitable face mask should be considered.



Published Feb. 5, 2015 8:16 AM - Last modified Apr. 23, 2021 2:22 PM