Dry and reweigh the membrane filters. Care should be taken not to disturb the contaminant on the
surface of the test membrane filter.
Calculate the Test Results.
Subtract the initial weight of the test membrane filter (W1) from the final weight (W2).
Subtract the initial weight of the control membrane filter (W3) from the final weight (W4).
Divide the correct weight of contaminant, (W2 - W1) - (W4 - W3), by the volume in liters of the sample
Report the result as total contaminant, expressed in milligrams per liter to the nearest 0.01 mg/L, and
also the sample volume used in the test.
Perform PMCS. Perform PMCS on all applicable laboratory equipment.
Apparatus and containers will be rinsed with a portion of the product being sampled to ensure that the
sample is not contaminated with the previous material, unless otherwise specified in the test procedures.
Soaking and rinsing material will be discarded.
Sampling apparatus will be cleaned immediately after use and stored so it will remain clean until after
The sampling area should remain clean to prevent contamination of intended sample.
All testing apparatus must be cleaned, prepared for next use, and properly stored as soon after
completing of the test method is practicable. Consult the test method for apparatus manual for additional
Clean up all spills immediately. Dispose of hazardous materials and hazardous waste in accordance with
laboratory standard operating procedures. Report all hazardous material and hazardous waste spills
immediately. Be familiar with and know the location of material safety data sheets for all hazardous
materials present in the workplace.
TEST D-5452 Standard Test Method for Particulate Contamination in Aviation Fuel by
Selecting and Preparing the Test Apparatus.
Analytical balance - single- or double-pan, the precision standard deviation of which must be 0.07 mg or
Oven - static type
Petri dishes - approximately 125 mm in diameter with removable glass supports for membrane filters
Forceps - flat-bladed with serrated, non-pointed tips
Test membrane filter - 47-mm diameter, nominal pore size 0.8 micron
Control membrane filter - 47-mm diameter, nominal pore size 0.8 micron
Dispenser for flushing fluid - 0.45-um membrane filters to be provided in the delivery line
Filtration apparatus consisting of a funnel and funnel base with filter support
Support apparatus - having adjustable height, integral spill collection pan at the base and an edge on the
can shelf to prevent the can from slipping off. The shelf is slotted.
Dispensing cap or plug - with approximately 9.5 mm inside diameter hose barb 32 mm long on which a
75 to 100 mm long piece of fuel resistant, flexible, plastic tubing is installed. The closure gasket shall be
made of a fuel resistant material.
Feed container - preferably the same container in which the sample was collected
Graduated receiving flask - glass with a sidearm to connect the vacuum system
Safety flask - glass containing a sidearm attached to the receiving flask with a fuel and solvent resistant
rubber hose and connected to the vacuum system
Ground/bond wire - bare stranded flexible, stainless steel or copper installed in the flasks and grounded.
Plastic film - polyethylene or other clear film not affected by flushing fluids
Multimeter/VOM - used for determining whether electrical continuity is 10 ohms or less between 2 points.