KERN & SOHN ALJ 310-4A - Manual (Page 35)

ALJ/ALS/PLJ/PLS-BA-e-1338 35
7.3 Verification
General introduction:
According to EU directive 90/384/EEC balances must be verified if they are used as
follows (legally controlled area):
a) For commercial transactions if the price of goods is determined by weighing.
b) For the production of medicines in pharmacies as well as for analyses in the
medical and pharmaceutical laboratory.
c) For official purposes.
d) For manufacturing final packages.
In cases of doubt, please contact your local trade in standard.
Verification instructions
An EU type approval exists for balances described in their technical data as
verifiable. If a balance is used where obligation to verify exists as described above, it
must verified and re-verified in regular intervals.
Re-verification of a balance is carried out according to the respective national
regulations. The validity for verification of balances in Germany is e.g. 2 years.
The legal regulation of the country where the balance is used must be observed!
After verification the balance is sealed at the indicated positions.
Verification of the balance is invalid without the "seal".
Balances with obligation to verify must be taken out of operation if:
 The weighing result of the balance is outside the error limit.
Therefore, in regular intervals load balance with known test weight (ca.
1/3 of the max. load) and compare with displayed value.
 The reverification deadline has been exceeded.
Position of the seal mark (models PLJ)