Technical

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Mettler Printer Fault

Mettler Toledo have recently announced some potential issues with the following printers: LC-P45, RS-P42, GA45. If you have one of these printers, please see the below link for more information.

Mettler Printer Fault Notification

Spare Part Enquiry

Please follow the link below and complete the form. One of our engineers will then review and call you if any more information is required. We will then quote you (if it is possible to supply).

Thanks for taking the time to submit your enquiry this way. It really helps us ensure you get the part you need

Spare Part Enquiry

Minimum Weight

The United States Pharmacopoeia states :

"… The pharmacopoeial tests and assays require balances that vary incapacity, sensitivity and reproducibility. Unless otherwise specified, when substances are to be "accurately weighed" for assay the weighing is to be performed with a weighing device whose measurement uncertainty (random plus systematic error) does not exceed 0.1% of the reading. Measurement uncertainty is satisfactory if three times the standard deviation of not less than ten replicate weighings divided by the amount weighed does not exceed 0.001…"

To give you a rough estimate of the Minimum Weight of a particular balance it is possible use the following calculation :

Repeatability (standard deviation) of the balance x 3000

The repeatability figure will be quoted on the technical sheet which can be downloaded from our web site or by contacting our office on 01865 750375

Note :
The above calculation is only intended to give you an estimate for the minimum weight of a balance. A correct minimum sample weight can only be established at the customer’s premises, where the balance has been installed in the place of use and carried out by a qualified person.

For more information contact European Instruments on 01865 750375 and download our technical leaflet :

Minimum Weight (PDF)

Nawi Directive

The purpose of this section is to introduce you to the directive. For complete and updated information and guidance on legislation relating to non automatic weighing please visit the National Measurement Office Web Site : www.nmo.bis.gov.uk

A non automatic weighing device has been defined as
“is one where an operator is involved in some part of the weighing process”

Non Automatic Weighing Directive
The Non Automatic Weighing Directive has determined that in some applications the above equipment must meet a minimum standard, that is CE Verified. Such equipment is indicated by a sticker on the equipment -black 'M' on a green background. This should not be confused with the electrical safety CE mark that appears on electrical equipment in general.

Download a guide here to help you determine whether your weighing application falls within the scope of the weighing directive. Please note documents from the National Measurement Office do get updated – please refer to their web www.nmo.bis.gov.uk to see if there are any later versions available.

Purchasing Verified / CE Marked Equipment
If you have determined that your weighing application does fall within the scope of the directive it is important that you tell your supplier of this requirement. Since weighing equipment purchased usually comes with an option to upgrade to a instrument that complies with the directive.

Once purchased it is NOT possible to retrospectively upgrade a standard instrument to one that complies with the weighing directive