This entails proper and representative sampling performed by our own inspectors.

Testing of drawn or provided samples can be carried out in specialized state-of-the-art laboratories. Our laboratory facilities give the possibility to cover a wide range of analytical applications on all types of food, feed, soft and fiber commodities. The sampling methods we use help customers meet contractual specifications.

1. Scope

This procedure covers the determination of the presence of contaminants by means of introducing an appropriate liquid (methanol) into a vessel’s tank. This test is done by physically spraying the liquid down the vesse’s tank bulkheads and trapping a portion on filter paper. The test is also done on vessel’s steam coils and sumps.

2. Apparatus/Reagents

2.1  Polyethylene Bottles 500 ml (squeezable)
2.2  Qualitative Filter Paper (Whatman No.5 110 mm diameter)
2.3  Methanol, Reagent Grade
2.4  Glass Bottles (wide mouth), 250 ml

3. Wall Wash Site Requirements

3.1 The number of tank areas to be tested depends on the tank condition, configuration and lining. As a minimum requirement the four wall area should be tested
3.2 Other ‘non-typical’ areas should also be samples and tested. These include areas such as discolored patches, peel of lining, exposed metal and pipe line.
3.3 If the ‘non-typical’ areas are more than 20% of the tank surfaces, test the collected Methanol samples separately.
3.4 DO NOT test on wet areas.