Tender For supply of lab chemical - buffer solution ph 9.18 details specification shall be as per attached nit , magnesium standard crm 1000 mg details specification shall be as per attached nit , standard total kjeldahl nitrogen 1000mg details specification shall be as per attached nit , potassium chloride crm details specification shall be as per attached nit , potassium dichromate crm details specification shall be as per attached nit , sodium carbonate crm details specification shall be as per attached nit , silica standard nist details specification shall be as per attached nit , turbidity standard crm details specification shall be as per attached nit