supply of purple nitrile powder (c&w item) , potassium dichromate for biolab, make brand-qualigens or similar. [ warranty period: 30 months after the date of delivery ] ] , ferroin indicator solution for biolab, pack size-100ml, make brand-oxford or similar. [ w arranty period: 30 months after the date of delivery ] ] , 15 ml graduated centrifuged tube pp conical bottom make/brand-polylab/tarson or sim ilar. [ warranty period: 30 months after the date of delivery ] ] , ferrous ammonium sulphate for biolab, make-merck/ranbaxy or similar. [ warranty pe riod: 30 months after the date of delivery ] ] , purple nitrile powder free gloves, brand-kimberly clark or similar. [ warranty period: 30 months after the date of delivery ] ] , mercuric sulphate for biolab, make brand-oxford or similar. [ warranty period: 30 mon ths after the date of delivery ] ]