Current Fapas Water and Environmental (Leap) Programme - Page 22

Fapas Water and Environmental Environmental Waste Water Chemistry The test materials supplied are standard concentrates or standard solutions. All Groups, except 2 & 4 require dilution with your laboratory’s reagent water before analysis. Full instructions regarding this dilution step will be provided. When diluted the test materials will contain levels of contaminants usually, found in waste water / effluent samples. The volume of concentrate supplied is given below together with the dilution required. Analyte Groups Analytes Concentration Ranges (approx, after dilution) Volume Supplied Dilution Required (approx) 22 1 BOD 5-day COD TOC 6.0 – 250 mg/l 6.0 – 250 mg/l 6.0 – 250 mg/l 20 ml to 1 l 2 Dissolved Solids @ 180 C Suspended Solids Total Solids 23 – 675 mg/l 23 – 675 mg/l 23 – 675 mg/l 500 ml no dilution required 3 Nitrate (N) Nitrite (N) Ammonia (N) Chloride Orthophosphate (P) Sulphate (SO4) Total Phosphorus (P) Kjeldahl Nitrogen (N) Total Nitrogen (N) 0.5 – 50 mg/l 0.2 – 10 mg/l 0.2 – 20 mg/l 10.0 – 500 mg/l 1.0 – 100 mg/l 10.0 – 500 mg/l 0.2 – 5 mg/l 2.0 – 50 mg/l 2.0 – 50 mg/l 4 x 60ml to 1 l 4 pH o Electrical Conductivity @ 25 C 1.0 – 13.0 pH units o 200 – 2000 µS/cm @ 25 C 2 x 125 ml no dilution required o