Labconco Logic+ A2 - Page 67

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Sampling Tube and sample the upstream concentration to establish the 100%
concentration level.
4. Establish the 0% concentration level according to your photometer’s instructions.
Figure 10-16
Figure 10-17
Type C1
Cabinet Width
Sash
Height
(inches)
Supply Air
Displacement
(CFM)
Laskin
Nozzles
Required
Calculated
Concentration
(ug/L)
1
Actual
Concentration
(ug/L)
2
4-foot
8
520
1
26
13
10
520
1
26
13
6-foot
8
665
1
20
12
10
665
1
20
12
1. The calculated concentration was established using the formula:
Concentration (ug/l) = (# Laskin nozzles @ 23 PSIG x 13,500) / Volume of air displaced
2. Based on Mineral oil
Table 10-4
Center Drip Tray
Extension Tube