testing of water waste water and process chemicals at quality control lab mathura refinery -1 ph 2 conductivity 3 tds 4 oil & grease 5 phenol 6 sulphide 7 tss 8 turbidity 9 do 10 cyanide 11 cod 12 bod 13 aereator settling ( svi / sdi ) 14 mlss 15 chloride 16 iron 17 phosphate 18 hydrazine 19 silica 20 alkalinity 21 sulphate 22 ca hardness 23 total hardness 24 free chlorine 25 ema / fma 26 organic matter 27 colour 28 mn 29 sodium bisulphide 30 ammonia / tkn 31 standardization & performance check of ph meter, conductivity meter, turbid meter, etc. 32 standardization of titrantes 33 preparation of standards e.g. cod, turbidity, conductivity, etc. 34 testing of h2o2, hypo, tsp, etc. 35 bacteriological testing related to drinking water / fire water 36 refrective index ( r.i. ) 37 amine 38 sulphur 39 h2s 40 process chemical parameter 41 desalter ( salt contents ) 42 acid sample testing 43 caustic sample testing 44 boot water testing 45 halide testing 46 carbon dioxide 47 jar test 48 sodium 49 potassium 50 dope test 51 morpholine 52 scale sampling testing for loi, moisture 53 sediments & water contents 54 metals testing 55 miscellaneous sample testing