Utensils weighing

While dispensing and weighing a small amount of the dried sample contained in the weighing bottle, it is prudent to avoid contacting the sample with laboratory utensils or weighing paper in order to avoid loss of a portion of the sample, which might adhere to the utensil or paper. In such instances, weighing by difference is recommended. 

Special attention is required in the use of the equipment for sampling and measuring raw materials — only completely dean and dry utensils should be used (e.g. scoops, spatulas, spoons, etc.). 4.2.4 With respect to weighing scales, there must be written specifications regarding to the accuracy of the scales. All weighing equipment must be inspected periodically. 

Weighing and dispensing operations must be carried out with clean utensils and apparatus. 

The equipment and utensils should be based on the batch size. Lifting and weighing of large amounts of starting materials may lead to physical problems. Sometimes extra tools may be necessary. 

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