Test Report
on emissions from Powerclean Spray Gun Cleaners
Table 3 - Solvent concentrations measured during the operation of a Unic Powerclean Automatic Spray
Gun Cleaning Machines.
*a This monitoring position was outside the operator’s breathing zone. Measurements were taken
to establish the effectiveness of the ventilated enclosure.
*b Exposure limits are generally for single compounds. Where there is reason to believe that
effects are additive a mixed exposure is assessed using the formula: C1/L1+ C2/L2...< 1
where C1 etc. are the measured concentrations and L1 etc are the corresponding exposure
limits.
Solvent
Acetone 1500 ppm Less than limit of 50ppm 50ppm
(10 min. TWA) detection
Propan - 2 - OL 500 ppm Less than limit of Less than limit of Not measured
(10 min. TWA) detection detection
Propyl Acetate 250 ppm Less than limit of Less than limit of Not measured
(10 min. TWA) detection detection
Butyl Acetate 200 ppm Less than limit of 30ppm 10ppm
(10 min. TWA) detection
Xylene 150 ppm Less than limit of 20ppm 150ppm
(10 min. TWA) detection
Toluene 150 ppm 3ppm 10ppm 60ppm
(10 min. TWA)
White Spirit 720mg/m3 30mg/m3 75mg/m3 100mg/m3
(10 min. TWA)
% of mixed exposure 100% 6% 49% 156%
limit *b (10 min. TWA)
Short Term
Exposure Limit
Ref: EH 40 1992
Monitoring
Position 1
10cm above the
unit during normal
operation.
Lid closed.
Ventilation off.
Monitoring
Position 2
10cm above the
unit when the cycle
had finished.
Lid open.
Ventilation on.
Monitoring
Position 3
*a
inside the enclosure
when the cycle had
finished.
Lid open.
Ventilation on.
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