Owner's Manual

BERYLLIUM
www.focal.com/beryllium/
Precautions of use
DANGER
FOCAL JMLab, a stock company incorporated under
the laws of France and registered with the trade and
companies registered of Saint-Etienne under number
344 394 309 000 35, having its registered office at 108
rue de l’avenir, 42350 La Talaudière, France.
The speakers concerned by this manual use a pure
Beryllium inverted dome tweeter system, capable to
extend the bandwidth up to 40Khz.
Regarding the potential hazardousness of Beryllium, a
raw material constituting the tweeter, some instructions
(defined hereunder) must be respected by the user of
these speakers in order to prevent any risk of absorption
of said material.
Nevertheless, in solid form and based on the current
state of knowledge at the date of printing of this
precautionary manual, the risks are limited, being
specified that the hazardousness of the Beryllium
mainly results from its inhalation, ingestion or contact
in vapour form or microparticles.
1. Characteristics of Beryllium
English
Carcinogenicity-
Category 1B
H350 i: May cause cancer when
inhaled
Acute toxicity -
Category 2
H330: Fatal if inhaled
Acute toxicity -
Category 3
H301: Toxic if swallowed
Specific target organ
toxicity, repeated
exposure - Category 1
H372: Causes damage to organs
through prolonged or repeated
exposure
Serious eye damage /
Eye irritation -
Category 2
H319: Causes serious eye irritation
Specific target organ
toxicity (single
exposure) - Category 3
H335: May cause respiratory irritation
Skin corrosion /
irritation - Category 2
H315: Causes skin irritation
Skin sensitivity -
Category 1
H317: May cause an allergic skin
reaction
BERYLLIUM
2. Precautions of use
It is essential to scrupulously respect the following
precautionary measures.
2.2. The Beryllium dome should never be in contact
with abrasive material
Beryllium is a stable product at room temperature.
Nevertheless, it reacts with the following acids:
sulphuric, hydrochloric, and hydrofluoric (with
hydrogen release).
Conditions to avoid: heat, sparks, open flame, or any
other sources of ignition. Beryllium is incompatible
with oxidizing agents, and also notably bromine
pentafluoride and performic acids. It explodes when
heated with magnesium.
In finely divided form, Beryllium is a moderately
flammable product. In a contained space, dust cloud of
the metal may explode in the presence of a source of
ignition. In case of fire, Beryllium releases highly toxic
smoke and vapour.
In case of fire, the recommended fire extinguishing
agents are engineered powders for combustible
metals or, failing that, other inert powders. It is also
recommended to wear adequate personal protective
equipment to prevent contact with the substance or
its products of combustion as well as full selfcontained
breathing apparatus.
2.3. Generally, prevent skin or eye contact, ingestion
or inhalation of all or part of the Beryllium dome. The
manufacturer underlines the fact that its absorption by
inhalation, dermal route or ingestion can cause severe
physical afflictions.
3. In the event of damage to the dome
In the case that the Beryllium dome is damaged in
whatever form, its whole surface should be covered
over. In such case, it is recommended to contact your
retailer in order to dismantle and replace the tweeter by
the relevant department of the distributor.
If the dome is broken, particles of Beryllium must be
carefully recovered and placed in a sealed plastic bag.
It should be returned to the retailer at the same time
as the speakers.
2.1. Tweeters including a Beryllium dome should be
handled with caution.
As a consequence, the users of the speakers have in
particular to strictly ensure that the protective grille
and all protective means on the tweeter is well
maintained and in no circumstance take the Beryllium
from its original location.
Generally, the speakers should be kept out of the
reach of children, especially the access of the
tweeters and the dome of Beryllium.
Precautions of use