tender for supply of filter papers, crm standards and chemicals for dadar sewage laboratory situated at dadar pumping station. , supply of filter papers, crm standards and chemicals for dadar sewage laboratory situated at dadar pumping station. , mercury sulfate pure , whatman filter paper 40 : diameter-150 mm (material code - 1010100700920) , cod standard solution 400 mg/l (material code - 1310500800842) , cod standard solution 100 mg/l (material code - 1310500800841) , mixed indicator for ammonia (material code - 1310500800631) , filter papers- glass microfibre 47 mm (material code - 1010100700563) , potassium dichromate crm nist traceable (material code -1310500800310) , ammonium ferrous sulphate annual repair (material code -1310500800157) , silver sulfate for analysis (material code -1310501100045 ) , sodium azide (material code -1310500800313 ) , sodium thio sulphate pentahydrate a. r. (material code -1310500800835) , celite 545 filter aid powder (material code - 1310500800947) , silica gel self blue (material code -1310501100043 ) , buffer ph 9.18 (sachet),nist traceble (material code - 1310500800832) , bod std. solution198 +/- 40 mg/l (material code - 1310500800840) , concrete sulphuric acid (h2so4) (material code -1310500100009) , buffer ph 4.01 (sachet),nist traceble (material code - 1310500800834) , buffer ph 7.00(sachet),nist traceble (material code - 1310500800960) , phosphate buffer for bod , chromium std. solution nist traceble (material code - 1310500800908 )