Table 3: Changes in element concentrations in distilled water after running the machine without feet.

Elements (ug/L)Distilled water + salt (pre-FBS)Distilled water + salt (post-FBS)Mean difference%change

Aluminum§25.026.01.04.0
Antimony§0.02.02.0200.0
Arsenic§0.06.06.0600.0
Barium§0.00.00.00.0
Boron0.01.01.0100.0
Cadmium§0.09.09.0900.0
Calcium30.0150.0120.0400.0
Chromium4.023,634.023,630.0590,750.0
Cobalt0.0320.0320.0320.0
Copper40.0280.0240.0600.0
Iron31.0116,421.0116,390.0375,451.6
Lead§1.00.0−1.0−100.0
Lithium0.00.00.00.0
Magnesium570.0570.00.00.0
Manganese0.01,566.01,566.01566.0
Molybdenum50.03,155.03,105.06,210.0
Nickel2.015,179.015,177.0758,850.0
Phosphorus21.059.038.0180.9
Potassium60.050.0−10.0−16.7
Selenium0.01.01.0100.0
Silicon20.01,170.01,150.05,750.0
Silver§0.00.00.00.0
Sodium136,740.0141,860.05,120.03.7
Strontium5.06.01.020.0
Sulfur0.00.00.00.0
Uranium§0.00.00.00.0
Vanadium 1.059.058.05,800.0
Zinc10.030.020.0200.0

Total137,610.0304,554.0166,944.0121.3

Array component147.0161,725.0161,578.01,09,917.0
Essential elements137,437.0142,786.05,349.03.9
PTEs§26.043.017.065.4

§PTEs: potentially toxic elements are defined to be aluminium, antimony, arsenic, barium, cadmium, lead, silver and uranium.
Essential elements are defined to be boron, calcium, lithium, magnesium, phosphorus, potassium, selenium, sodium, strontium, sulphur, vanadium, and zinc.
Array component elements are to be chromium, cobalt, copper, iron, manganese, molybdenum, nickel, and silicon.