Tender For supply of set of cannon fenske glass viscometer tube of following sizes: (1) astm size 150,reverse flow wi th nabl certificate for both bulbs at 40 & 100 oc - 1 no. (2) astm size 300,reverse flow with nabl certificate fo r both bulbs at 40 & 100 oc - 1 no. (3) astm size 350,reverse flow with nabl certificate for both bulbs at 40 & 100 oc - 1 no. (4) astm size 450,reverse flow with nabl certificate for both bulbs at 40 & 100 oc - 1 no. (5) as tm size 100, direct flow with nabl certificate at 100 oc.- 1 no [ warranty period: 30 months after the date of delivery ]