TECHNICAL INFO
Most of our gases come in industrial grade, high
purity and graded purity
Industrial is the most common grade and is normally 98% to
99.9% pure depending on the gas
For still higher purities, we supply cylinders with grade
numbers which refer to the actual minimum purity of the gas.
The grade number consists of two digits; the first digit
refers to the number of 9’s in the purity and second is the
final number after the 9’s. So 4.8 grade is 99.998%, 5.5
grade would be 99.9995%, 6.0 would be 99.99990% and so on.
In the graded purities the maximum quantity of certain
impurities, usually moisture, nitrogen, oxygen or
hydrocarbon is also normally given (in parts per million or
parts per billion).
Purities and availability for our industrial and high purity
gases are as follows:
|
Product
|
Industrial
|
High Purity
|
4.5 Grade
|
5.0 Grade
|
5.5 Grade
|
Higher Grade
|
|
Acetylene
|
98.6%
|
99.5%
|
N
|
N
|
N
|
N
|
|
Argon
|
99.9%
|
N
|
Y
|
S
|
S
|
S
|
|
Carbon Dioxide
|
99.9%
|
N
|
S
|
N
|
N
|
N
|
|
Helium
|
99.5%
|
99.9%
|
Y
|
Y
|
S
|
S
|
|
Hydrogen
|
99.5%
|
N
|
Y
|
S
|
S
|
S
|
|
Nitrogen
|
99.0%
|
99.9%
|
Y
|
S
|
S
|
S
|
|
Oxygen
|
98.8%
|
N
|
Y
|
S
|
S
|
S
|
Y = available ex stock, S = special order, N = not normally
available
To carry the gases either from
cylinders or from storage tanks to the point of use at the
desired flow and pressure conditions, a system should be
operating for pressure regulation, flow controlling and
monitoring.OKNAL technical support teams work close with the
customers to determine, design, manufacture and install the
whole system including gas distribution lines.
Maintenance of the system and resizing it
due to probable change at customers’ production rates are
also performed by the
Turkish
