A 25 ml wastewater sample was diluted to 250 ml with odourless distilled water so that the odour of the sample was no longer perceivable. What was the Threshold Odour Number (TON)?

A 50 cc water sample passed through an empty dry filter paper whose initial weight is 1.46 g. After oven drying, the final weight of the filter paper with residue is 1.42 g. What is the concentration of suspended solids in mg/L? (Note: Taking the absolute weight difference)