ASTM D2276 for Particulate Contaminant in Aviation Fuel by Line Sampling
11. Procedure
11.1 Assemble the apparatus shown in Fig. 2 with the field monitor in place on the stopper of the vacuum flask.
NOTE 4 - Take care to ensure that monitors are tightly closed and preferably clamped. Spring paper clips have been found suitable for this purpose.
11.2 Place the tip of the delivery spout of the solvent filtering dispenser in direct contact with the monitor inlet hole. Introduce filtered flushing fluid.
11.3 Apply vacuum to the flask and allow approximately 250 mL of filtered flushing fluid to pass from the solvent filtering dispenser through the monitor and into the vacuum flask.
11.4 Remove the solvent filtering dispenser and slowly release the vacuum.
11.5 Remove the monitor from the stopper of the vacuum flask and carefully dismantle it in an upright position.
11.6 Carefully remove the test and control membrane filters, and place side by side on clean glass supports in a clean, covered petri dish.
NOTE 5 - The test and control membrane filters can be removed from the monitor by pushing upwards against the support pad through the outlet orifice with a thin dowel.
11.7 Dry and reweigh the membrane filters as described in 8.1.2-8.1.5, taking care not to disturb the contaminant on the surface of the test membrane filter.
