Page 102 - The Veterinary Laboratory and Field Manual 3rd Edition
P. 102
The selection, use, maintenance and quality control of laboratory equipment and supplies 71
Figure 2.35 Single pan balance. Photo: Willy Schauwers, Provincial Institute for Hygiene, Antwerp, Belgium.
• Never weigh directly onto the pan but use
a suitable container (for example, foil caps,
weigh boats) or, after taring, weigh directly
into the vessel being used to make a solution/
preparation.
• When adding or removing chemicals to/from
the balance, avoid spilling on the balance pan.
• Clean up any spills immediately.
• Cover the balance when not in use.
• Balances (especially high precision, analytical
balances) should stand on a stable (vibration
free) table.
Quality assurance
controL WEIGHt
Every laboratory and every balance should have its
own control weight(s). The control weight should
be measured on a daily basis, preferably in the Figure 2.36 Analytical balance. Photo: Willy
morning (the control weight(s) should be chosen, Schauwers, Provincial Institute for Hygiene,
based on the weight range of the balance used). Antwerp, Belgium.
Vet Lab.indb 71 26/03/2019 10:25
