Standard STD 420-0003
Volvo Group
Version
1
Page
4
Ø 90 ±1
Ø
8
3
±
1
Ø
1
0
5
±
1
190 ±1
3,5 0
1,5
Ground
Dimensions in millimetres
Figure 1 Glass beaker
4.9 Aluminium foil discs for laboratory use; thickness 0,03 mm and a diameter of 102 ± 2 mm.
The circular pieces of aluminium should be produced through stamping, and if so, for better results, the aluminium
pieces should be stamped out of several layers of aluminium foil in order to decrease the risk of their edges being
uneven and damaged.
Great care needs to be excercised so that the aluminium foil does not get contaminated. Use lint-free cotton gloves
or powder-free polyethylene gloves during the handling.
4.10 Reflectormeter, with a 60° incident beam and 60° measurement beam.
4.11 Spacer, designed to prevent contact with the condensate on the glass plate during reflectometer
measurements, made of a suitable material such as paper or plastic with a circular hole for the measurements. The
thickness of the spacer shall be 0,1 ± 0,02 mm (see Figure 2).
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