based on the flash point criteria. The flash point should NOT however be used to
describe or appraise the fire hazard or risk under actual fire conditions. This test
method (D93) provides the only closed-cup flash point test procedures for temperatures up to 698
F.
PILOT
FRONT
HANDLE (OPTIONAL)
(MUST NOT TIP EMPTY CUP)
STIRRER DRIVE FLEXIBLE SHAFT
{PULLEY DRIVE OPTIONAL}
FLAME EXPOSURE DEVICE
LID
IR GAP
SHUTTER OPERATING KNOB
THERMOMETER
DISTANCE PIECE
TEST CUP
E
A
B
C
D
mm
min
min
max
max
in.
SHUTTER
TOP PLATE
STOVE
AIR BATH
OVER CUP AREA
IE,METAL SURROUNDING
THE CUP
HEATER FLAME-TYPE
OR ELECTRIC RESISTANCE
TYPE {FLAME TYPE SHOWN}
F MIN THICKNESS
A
B
C
D
E
F
4.37
41.94 42.06
3.18
9.52
57.86
1.58
57.23
6.35
. . .
. . .
. . .
. . .
5.16 0.172
1.651
0.062
2.253
0.25
0.203
1.656
0.125
0.375
2.278
Fig. 2 The Pensky–Martens closed-cup flash point apparatus
Quality Control of Products in Petroleum Refining
665