rco for supply of membrane, vermi compost bed, tarpaulins for the year 2024-25 , isi marked geo membrane for pondlining laminated high density polyethylene(hdpe) woven fabric lining (geo membranes) with up to date amendmends ; is 15351 : 2008 textiles , type i thickness in micron 250 (+/- 7.5 %) mass gm/sqmeter (gsm) min 250 , type ii thickness in micron 500 (+/- 7.5 %) mass gm/sqmeter (gsm) min 420 , type iii thickness in micron 750 (+/- 7.5 %) mass gm/sqmeter (gsm) min 650 , type iv thickness in micron 1000 (+/- 7.5 %) mass gm/sqmeter (gsm) min 950 , vermi compost beds - isi mark as per is 15907; 2010 agro textiles high density polythylene (hdpe) woven beds for vermiculture with up to date amendments. , vermi compost beds as above - 3600mm (l) x 1200mm (w) x 600mm (h) , isi mark textiles - tarpaulins made from high density polythylene woven fabric as per is 7903:2017 with upto date amendments , tarpaulins as above with mass gm/sqmeter (gsm) min 200 , tarpaulins as above with mass gm/sqmeter (gsm) min 250 , tarpaulins as above with mass gm/sqmeter (gsm) min 300 , tarpaulins as above with mass gm/sqmeter (gsm) min 340 , tarpaulins as above with mass gm/sqmeter (gsm) min 400 , tarpaulins as above with mass gm/sqmeter (gsm) min 450 , tarpaulins as above with mass gm/sqmeter (gsm) min 500