e-tender for procurement of certified reference material (crm) for water quality laboratory, tapi division, cwc, surat (gujarat) e-tender for procurement of certified reference material (crm) for water quality laboratory, tapi division, cwc, surat (gujarat) , procurement of certified reference material (crm) for water quality laboratory, tapi division, cwc, surat (gujarat) , buffer solution ph 4.00 (250c) red- in accordance with iso 17034-500ml , buffer solution ph 7.00 (250c) yellow- in accordance with iso 17034-500ml , buffer solution ph 10.00 (250c) blue- in accordance with iso 17034-500ml , calcium carbonate- in accordance with iso 17034-50gm , potassium dichromate certified by- in accordance with iso 17034-80gm , potassium chloride99.999 suprapur - in accordance with iso 17034-50gm , sodium carbonate- in accordance with iso 17034-80gm , sodium chloride- in accordance with iso 17034-80gm , fluoride standard solution traceable to srm from nistnaf in h2o 1000 mg/lf- in accordance with iso 17034- 475ml , nitrate nitrogen standard solution traceable to srm from nist nano3 in h2o 1000 mg/l n- in accordance with iso 17034- 500ml , sulfate standard solution traceable to srm from nist na2so4 in h2o 1000 mg/l so4- in accordance with iso 17034- 500ml , bod 500mg/l - 500ml- in accordance with iso 17034-500ml , tisab iii solution – ionic strength adjustment buffer compatiblewith thermo onion ise meter-475ml , fluoride electrode filling solution – compatible with thermo orion make fluoride electrode.-(5*60ml) , hydrochloric acid 30%, suprapur grade.-250ml , nitric acid 65%, suprapur grade-1 litre