quoted as the maximum height of flame that can be achieved without smoking. The
apparatus that is used for this test is shown in Fig. 7.
ASTM D1322
Calibrating the Apparatus
The apparatus is calibrated daily against known aromatic compound smoke points
to establish a correction factor. The two reference fuel blends are toluene and 2,2,4trimethyl pentane, and details of these fuels are given in Table 16.
Table 15 Weathering
tube graduation tolerances
Range, ml
Scale division, in ml
Limit of error, ml
0.0–0.1
0.05
0.02
0.1–0.3
0.05
0.03
0.3–0.5
0.05
0.05
0.5–1.0
0.1
0.05
1.0–3.0
0.1
0.1
3.0–5.0
0.5
0.2
5.0–25.0
1.0
0.5
25.0–100.0
1.0
1.0
CHIMNEY
SCALE
WICK
GUIDE
GALLERY
CANDLE
SOCKET
CANDLE
Fig. 7 A smoke point lamp
672
D.S.J. Jones
apparatus that is used for this test is shown in Fig. 7.
ASTM D1322
Calibrating the Apparatus
The apparatus is calibrated daily against known aromatic compound smoke points
to establish a correction factor. The two reference fuel blends are toluene and 2,2,4trimethyl pentane, and details of these fuels are given in Table 16.
Table 15 Weathering
tube graduation tolerances
Range, ml
Scale division, in ml
Limit of error, ml
0.0–0.1
0.05
0.02
0.1–0.3
0.05
0.03
0.3–0.5
0.05
0.05
0.5–1.0
0.1
0.05
1.0–3.0
0.1
0.1
3.0–5.0
0.5
0.2
5.0–25.0
1.0
0.5
25.0–100.0
1.0
1.0
CHIMNEY
SCALE
WICK
GUIDE
GALLERY
CANDLE
SOCKET
CANDLE
Fig. 7 A smoke point lamp
672
D.S.J. Jones