tender for purchase of chemical and equipment , methyl orange solution , sulfuric acid (cons. h₂so) , ammonia buffer solution , edta. solution n/50 , ethylene diamine tetraacitete dihydrate , erichrome black-t , silver nitrate n/50 solution , potassium chromate , universal indicator solution ph 4-11 , o-totidine (reagent) , flouride (reagent) , nitrate teblets and (reagent) , water bacteria test kit , water iron test kit , ammonia test kit , distill water , filled water analysis kit (water testing kit , compound microscop , td.s. digital meter , digital ph meter , digital turbidity meter , chemical balance (standardweight) , chlorine comparator box , sampling bottel - 250 ml. , spirit lamp - 125 ml. , spirit , ph indicator paper 01 to 14 ph , filter paper hand made (dia: 15cm) , ph electrode glass , glass rod , pipette , pipette stand horizontal , test tube borosil (18x150mm) , test tube stand 32x12 places , measuring cylinder borosil (100ml) , funnel borosilicate dia (75mm.) , glass dropper with rubber teat. , burette borosil 100ml. , burette stand with double fisher clamp , beaker borosil - 500ml , beaker borosil - 200ml , beaker borosil - 100ml , beaker borosil - 50ml , conical flask borosil - 250ml , conical flask borosil - 100ml , turbidity test tube. , buffer teblets. (capsule) , sodium hypochlorite